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27 Jun 2022
5 min read
Benefits for planet health International conferences

How climate change affects food system and nutrition?

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ASN Nutrition Live 2022 gathered experts and scientists for 3 days to discuss the latest data and results in many fields of nutrition and health. This year’s session was marked by a large proportion of conferences dedicated to environmental, agricultural and sustainable food issues, among them, the “Climate/Environment, Health, Agriculture and Improved Nutrition (CHAIN) Forum”. It was chaired by Daniel Raiten (Eunice Kennedy Shriver National Institute of Child Health and Human Development Bethesda, Maryland, USA) and John Finley, PhD (USDA Agricultural Research Service Beltsville, Maryland, USA), with the intervention of Kristie L. Ebi, PhD, MPH (University of Washington Seattle, Washington, USA).

Health and environment: complex interactions implicating food system

For Daniel Raiten, environment and health are strongly implicated and both have to be seen with a holistic view, much more complex than it may be primarily seen:

  • The environment is linked to natural land, water and climate but also to social, economic or political issues, biological, health and genetics topics and in a context of home community.
  • Health and nutrition have to be considered in a global context of non-communicable diseases, infectious diseases, undernutrition, malnutrition or inflammation.

Daniel Raiten focuses on the critical role of the multicomponent food system, which is key in this holistic analysis and may address all the actual interrogations and choices to build for the future:

  • How can we address the impact of a changing physical environment, including climate change, on the amount and quality of the food supply?
  • Can we produce enough high-quality food in an environmentally sustainable manner to meet global health goals?
  • How can we address increased burden of demand on diminishing supply?

Food system: an interconnected system

For John Finley, it was interesting to analyze further the roles, implications and interactions of the food system integrating 3 interacting universes:

  • The agricultural industry, which produces our food and focuses on many issues (environmental and economic sustainability, plant-animal health, environment, production system),
  • The food industry, which transforms our food and focuses on consumers choices, processing, storage and retail,
  • The nutrition, associated with several issues as dietary guidelines, diseases prevention, federal policies and health sciences;

and build on four interconnected and dynamic components: Consumer choice, environment, human health and food production. Indeed, the actual context shows how the system is moving continually, with the covid crisis or the Ukraine crisis impacting food production, agricultural production or human health and therefore impacting the whole interconnected systems.

The main objective of the food system is to provide calories, proteins and micronutrients to feed the whole World population. And as every change impacts all elements of food system, the challenge is to provide everyone with healthy foods, which production remains sustainable for the food system.

Intersection of climate change, food systems, nutrition and health

To go further, Kristie Ebi analyzed more precisely the impact of the actual drastic climate change on food systems.

There are 18 countries considered at high or moderate risk of food insecurity. And, as all systems (climate, food, ecosystem, socio-economic) are interconnected, the climate impact is not neutral in this food insecurity. Indeed, several major factors are putting food security at risk:

  • Covid
  • Conflicts
  • Vegetation deficit
  • Excessive rainfalls
  • Global warming
How climate change affects nutrition? - Kristie Ebi @ASNNutritionLive2022 - picture1_ YINI

Human influence has warmed the climate at a rate that is unprecedented in at least the last 2000 years. Climate change is already affecting every inhabited region across the globe, with human influence contributing to many changes in weather and climate. It affects:

  • heat waves, affecting cropping areas and harvests
  • agricultural and ecological droughts with significant impacts on soil moistures

Projected changes in extremes are larger in frequency and intensity for every additional increment of warming. The impacts will be greater in region where food insecurity is already at risk. And all aspects of our food system are impacted by the extreme climate changes and global warming:

How climate change affects nutrition? - Kristie Ebi @ASNNutritionLive2022 - picture2_ YINI

By 2050, model projects that climate change will:

  • lead to per person reduction of food availability, fruits & vegetable consumption, red meat consumption
  • result in 529 000 climate-related death worldwide (most deaths projected in south and east Asia). Adoption of climate-stabilization pathways would reduce climate related death by 29-71%

Climate changes impacts also mostly food supply instabilities.

For example, the global warming changing the temperature of the ocean impacts the fishing areas and industries as well as food supply to local population.

And we go further on plant production, the effect of global warming is plural. Despites the extrem heat waves and drought, there are impact of the photosynthesis and global nutritional quality of the plant.

Photosynthesis removes the carbon of the CO2 and incorporates it into organic molecules. High CO2 and warming temperature are expected to alter the nutritional quality of the 85% of the plants (which are the most plant-based component of the diet: wheat, rice, barley, potatoes); with less protein and essential micro-nutrients, and more carbohydrates. That would lead to a global malnutrition with a combined risk of deficiencies of micronutrients (iron, zinc).

ow climate change affects nutrition? - Kristie Ebi @ASNNutritionLive2022 - picture3_ YINI

The altered plant allocation of carbon can also alter access to soil nutrients and contaminants, such as cadmium and methylmercury. Elevated soil temperatures increase arsenic uptake in rice. Higher CO2 concentrations could also affect livestock through effects on plant nitrogen content.

The impact of the global climate change are plurals.

For Kristie L. Ebi, there remain opportunities to improve future food security and things to do, at many different levels:

  • Improve governance and leadership
  • Secure food entitlement
  • Pursue and encourage technological breakthroughs (water quantity and quality, more investment in research for sustainable agriculture)
  • Address food demand and supply
  • Improve food production models

For the scientists, as John Finley concludes, the priorities are to:

  • have a global approach and close gaps between consumer choices, environment, human health and food production
  • adopt a multidisciplinary approach, understand constraints & issues across all dimensions.
  • have diversity of opinions,
  • keep in mind that “we don’t make policy: we conduct science to inform policy
Source: ASN Nutrition Live 2022 – Climate/Environment, Health, Agriculture and Improved Nutrition (CHAIN) GEM Forum
20 Jun 2022
7 min read
Fermentation benefits Q&A

Why are fermented foods good for you?

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The interest of scientists in the secrets of fermentation has been growing in recent years. This technique, whose beginnings of use go back to the Antiquity [1], has been valued for a long time because it allowed and still allows to enhance the self-life of food products, while conferring atypical organoleptic qualities. Today, many studies are focusing on the nutritional and health benefits of fermentation.

A small overview of fermented foods

When we talk about fermented products, it is very common to think first of lactic fermentation. Indeed, many products that we consume daily are the result of a fermentation carried out by bacteria and yeasts naturally found in the food or added. Cheese, yogurt but also more atypical products such as milk kefir (fermented milk drink made using kefir grains that contain bacteria and yeasts) are dairy fermented foods.

Yet, over 5000 types of fermented foods are produced and consumed around the world and a huge variety of fermented foods has been developed throughout history, including vegetables, cereals and breads, soybean products, fish products, and meats.

Moreover, experts recently agreed on the definition of fermented foods being ‘foods made through desired microbial growth and enzymatic conversions of food components’ [2]. Among this definition, we can distinguish:

  • Foods without live microorganisms at the time we eat/drink them: bread, wine, cocoa or coffee beans, for instance.
  • Foods with live microorganisms: sauerkraut, kimchi, kefir, yogurt, cheese, kombucha, or miso for example.

Fermented foods may contribute to a healthy gut microbiota

Fermented foods, including sauerkraut, kimchi, kefir, yogurt or cheese, ordinarily contain viable microorganisms in average up to 106 cells/g [3]. A small portion surviving in the digestive tract [4], these bacterial strains and microbes contained in the fermentation matrix will enrich the population of the intestinal microbiota, up to 10,000 times according to a study [5]. Such a supplementation in microbes coming from food may be beneficial for the development of the immune system, maintenance of gut health with an enhanced intestinal microbiota and cognitive functions.

Regular consumption of fermented dairy products provides beneficial microorganisms to the intestinal microbiota. Digestive pathologies or discomfort such as lactose intolerance, diarrhea, constipation or irritable Bowel syndrome could be improved by consuming fermented dairy products like yogurt [6].

‘The strongest evidence supporting the health benefits of fermented foods is for their ability to improve lactose digestion and tolerance.’ – Savaiano and Hutkins, 2020.

Indeed, during the lactic fermentation process, bacteria secrete bioactive compounds with health-modulating potential [3]. Among these molecules, vitamins of the B group (B12, B9, riboflavin…), but also proteins with antioxidant properties [7].

The presence of lactic acid produced during fermentation is associated with a reduction in the secretion of pro-inflammatory cytokines, and therefore pro-inflammatory response [8].

Some dairy fermented foods are probiotic

A fermented food may be described as a “probiotic food” only if:

  • It contains live microorganisms at the time it is eaten,
  • Those microorganisms (bacterial or yeast strains) are well defined and have shown a health benefit in a scientific study, and
  • The strains are present in the final food product in sufficient numbers to confer the health benefit.

Actually, probiotics are defined as specific microorganisms that remain alive within the gut after being ingested and are proven to confer a health benefit.

Fermented foods associated with reduced cardiovascular diseases and mortality risk   

Beyond basic nutrition aspects, eating fermented foods consumption has been associated with many positive health outcomes.

A recent study [6] has shown that fermented milks and yogurt consumption is associated with weight control, including less obesity, reduced body fat and decreased weight gain over years. Also related to forms of malnutrition, combined results of clinical studies and meta-analysis [9,10,11] prove that yogurt consumption in particular is associated with a reduced risk of type 2 diabetes mellitus but also a reduced risk of cardiovascular disease (CVD) and overall mortality.

Studies also suggest that the consumption of dairy fermented foods is associated with a reduced risk of CVD because some components may interfere with cholesterol pathways [10], lower blood pressure (antihypertensive properties), probably linked to a reduction in cardiovascular diseases, such as stroke, but more trials are required to confirm this assessment [10].

Eating fermented foods may benefit your brain functions

Scientists agree today to call our intestine “the second brain”. Indeed, the gut microbiota itself seems to be extremely linked to cognitive functions according to a “microbiota-brain-gut” axis. According to several studies [12,13], gut symbiotic microbes can regulate neurotransmitters secretions and therefore, affect mood and mental health, but also synthetize themselves short-chained fatty acids and some neurotransmitters (GABA, acetylcholine, serotonin…). By eating fermented foods, we allow our microbiota to remain rich, with diverse and healthy strains, in order to provide neuroactive functions and prevent both metabolic and behavioral illnesses [13].

Fermented foods are thus increasingly being considered for their properties that go well beyond preservation and sensory attributes. At the same time, the increased interest in the human microbiome as a major determinant of human health and behavior underscores the importance of and need for research to understand the functions and effects of microorganisms and/or the components they synthesize contained in fermented products.

If you want to know more about Gut health, check our infographics on Children’s Gut Health and How to support a healthy gut in children?

For more information:

References:
[1] Edward R. Farnworth, Handbook of Fermented Functional Foods. Functional foods and Neutraceuticals. CRC Press (2003). 408p.
[2] Marco ML, Sanders ME, Gänzle M, et al. The International Scientific Association for Probiotics and Prebiotics (ISAPP) consensus statement on fermented foods. Nat Rev Gastroenterol Hepatol. 2021;18(3):196-208.
[3] Marco, M. L., Heeney, D., Binda, S., Cifelli, C. J., Cotter, P. D., Foligné, B., … & Hutkins, R. (2017). Health benefits of fermented foods: microbiota and beyond. Current opinion in biotechnology, 44, 94-102.
[4] Derrien, M., & van Hylckama Vlieg, J. E. (2015). Fate, activity, and impact of ingested bacteria within the human gut microbiota. Trends in microbiology23(6), 354-366.
[5] Lang, J. M., Eisen, J. A., & Zivkovic, A. M. (2014). The microbes we eat: abundance and taxonomy of microbes consumed in a day’s worth of meals for three diet types. PeerJ2, e659.
[6] Savaiano, Dennis A, and Robert W Hutkins. “Yogurt, cultured fermented milk, and health: a systematic review.” Nutrition reviews vol. 79,5 (2021): 599-614. doi:10.1093/nutrit/nuaa013
[7] Russo, P., Capozzi, V., Arena, M. P., Spadaccino, G., Dueñas, M. T., López, P., … & Spano, G. (2014). Riboflavin-overproducing strains of Lactobacillus fermentum for riboflavin-enriched bread. Applied Microbiology and Biotechnology98(8), 3691-3700.
[8] Iraporda, C., Errea, A., Romanin, D. E., Cayet, D., Pereyra, E., Pignataro, O., … & Rumbo, M. (2015). Lactate and short chain fatty acids produced by microbial fermentation downregulate proinflammatory responses in intestinal epithelial cells and myeloid cells. Immunobiology220(10), 1161-1169.
[9] Eussen, S. J., van Dongen, M. C., Wijckmans, N., den Biggelaar, L., Elferink, S. J. O., Singh-Povel, C. M., … & Dagnelie, P. C. (2016). Consumption of dairy foods in relation to impaired glucose metabolism and type 2 diabetes mellitus: the Maastricht Study. British journal of nutrition, 115(8), 1453-1461.
[10] Tapsell, L. C. (2015). Fermented dairy food and CVD risk. British Journal of Nutrition, 113(S2), S131-S135.
[11] Soedamah-Muthu, S. S., Masset, G., Verberne, L., Geleijnse, J. M., & Brunner, E. J. (2013). Consumption of dairy products and associations with incident diabetes, CHD and mortality in the Whitehall II study. British journal of nutrition, 109(4), 718-726.
[12] Cryan, J. F., O’Riordan, K. J., Cowan, C. S., Sandhu, K. V., Bastiaanssen, T. F., Boehme, M., … & Dinan, T. G. (2019). The microbiota-gut-brain axis. Physiological reviews.
[13] Martin, C. R., Osadchiy, V., Kalani, A., & Mayer, E. A. (2018). The brain-gut-microbiome axis. Cellular and molecular gastroenterology and hepatology6(2), 133-148.
13 Jun 2022
2 min read
International conferences

Climate, nutrition and food matrix… live from ASN Nutrition live 2022

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On Tuesday 14th of June 2022, the ASN’s flagship annual meeting Nutrition Live 2022 will begin. Three days of online events, and opportunities to stay up-to-date and participate in sessions, workshops, and other programs most relevant in nutrition science.

Hot topics related to food, nutrition, sustainable healthy diets or climate changes will be at stakes and we will be very happy to cover two symposia.

Climate/environment, health, agriculture and improved nutrition

Organized on Tuesday, June 14, 2022 – 4:00 PM – 5:30 PM EDT, with the participation of Daniel Raiten (Eunice Kennedy Shriver National Institute of Child Health and Human Development, USA), John Finley, PhD (USDA Agricultural Research Service, USA) and Kristie Ebi, PhD, MPH (University of Washington, USA)

Next level health solutions: the magic of the matrix

Organized on Wednesday, June 15, 2022 – 8:30 AM – 9:40 AM EDT

More and more, scientific evidence is revealing that the food matrix – the interaction between the nutrients, bioactive components, and physical structure of a food – can impact health in significant and unexpected ways beyond its individual nutrients. This evolution in the understanding of nutrition research is arising as key authoritative agencies reevaluate the definition of healthy foods and dietary patterns. This program will explore the emerging research surrounding the relationship between the food matrix and health, with a particular focus on the dairy food matrix and its bioactive components. In particular, the complex role of the food matrix on physiologic health markers, such as cardiometabolic disease risk, inflammation, immunity and the gut microbiome will be discussed. To conclude, gaps in knowledge needed to improve scientific understanding of the complex and synergistic health effects of the food matrix and the current generalizations defining a healthy food will be critically evaluated. With the participation of Moises Torres-Gonzalez, PhD. (National Dairy Council, USA), Hannah D. Holscher, PhD, RD (University of Illinois at Urbana-Champaign, USA), Emma L. Feeney, PhD (University College Dublin, Ireland), Arne Vernon Astrup, MD, DMSc (Novo Nordisk Foundation) and Hari Meletharayil, PhD (National Dairy Council, USA)

Stay tuned… we will find new content related to thoses conferences on our website in a few days and on our social media.

In the meantime, do not hesitate to visit the ASN nutrition live 2022 for more topics, conferences and exchanges.

30 May 2022
3 min read
by YINI Editorial team
Other studies

Could eating yogurt help protect you from bowel cancer?

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Eating yogurt regularly is associated with a reduced risk of bowel cancer, the third most common cancer among both men and women globally.

That’s the finding of latest research reviewing all the relevant studies carried out so far (1). If confirmed by further research, the finding could add to the growing list of health benefits associated with eating yogurt, including reduced risk of heart disease, type 2 diabetes, and hip fractures (2).

Gut microbiota may play a key role in maintaining gut health

People are at increased risk of bowel, or colorectal cancer (CRC) if their diet is low in fruit and vegetables, low in fibre, high in fats, or high in processed meats. Evidence suggests that this link between diet and CRC risk may be mediated by changes in our gut microbiota, the complex community of trillions of microorganisms that live in out intestine.

As a fermented food, yogurt is rich in beneficial bacteria which can act as probiotics to give the gut microbiota a small healthy boost. So it comes as no surprise that yogurt consumption may be linked with a lower risk of CRC – but until now, the evidence from studies has been inconsistent.

That’s why the authors of the latest study set out to clarify the association between yogurt consumption and CRC risk by reviewing all published studies on the topic (1).

They carried out a systematic search of publications up to July 2021 and found 16 studies – involving a total of 1,129,035 participants – on the association between yogurt consumption and risk of CRC. These included studies that looked at different types of bowel cancer (total CRC, colon or rectal cancer, or proximal or distal colon cancer).

The high consumption of yogurt is associated with a reduced risk of CRC

Analysing the results, the researchers found that the highest yogurt consumption was associated with a lower risk of CRC compared with the lowest yogurt intake.

Analysis by sub-types of cancer showed that yogurt consumption was associated with significantly lower risk of CRC overall, and specifically with colon cancer and with distal colon cancer.

‘This systematic review and meta-analysis suggested that yogurt consumption is related to a lower risk of CRC.’ – Sun J, et al, 2022

The findings of this study are in line with previous studies suggesting that the risk of other diseases reduces with increasing yogurt consumption. These have included studies suggesting a possible role for yogurt in helping to manage weight. Obesity is a risk factor for CRC, and the authors suggest that this indirectly supports a possible beneficial role of yogurt intake in reducing the risk of CRC.

How might yogurt consumption help protect against CRC?

Several possible ways in which yogurt consumption might help protect against CRC have been proposed. Yogurt may exert anti-tumour effects by reducing the level of carcinogens, for example, by reducing the activity of certain enzymes in the gut. Compounds produced by the probiotic bacteria in yogurt may also help block the initiation of cancer.

Further studies are needed to confirm these findings, say the authors, but if their results are supported, they’d recommend eating yogurt as part of your regular diet to reduce your risk of CRC.

‘If such a conclusion is supported, we would recommend regular yogurt intake as a healthy lifestyle behavior in decreasing the risk of CRC in adults.’ – Sun J, et al, 2022.

References
27 May 2022
3 min read
Expert interviews Gut Health

The gut microbiota, a beneficial actor for health (video by Ximena Lopez)

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Last month, the Gut Microbiota for Health (GFMH) organized in Washington a global Summit on the Gut Microbiome in Precision Nutrition & Medicine.  The nutritionnist Ximena Lopez visited the Summit and accepted to answer a few questions about microbiote, health and nutrition.

1. What is the microbiota? And what does the intestinal microbiota refer to?

It is the set of good microorganisms that live in different places and need a host to live, as in the human body. The intestinal microbiota is found in the gastrointestinal tract, mainly in the colon and its richness and diversity can  be influenced from the first 1000 days of life, with an impact of environmental factors which include the type of birth, breastfeeding and feeding, and then establishes itself as a unique imprint throughout life.

2. What are prebiotics and probiotics?

Probiotics are the “good bacteria” that if consumed in sufficient quantities can offer a health benefit and can be consumed in foods such as yogurt or kefir (when added in a specific way). Prebiotics are the food of probiotics which are mainly fiber and antioxidants (phytonutrients).

3. What foods are recommended to take care of our microbiota?

You can include more fiber in your diet, around 25 – 30g, , which can be achieved through the inclusion of more plant-based foods to your diet (fruits, vegetables, whole grains). Consumption of Fermented dairy products such as yogurt, kefir constitute an important daily intake of probiotics, which brings exclusive benefits for our digestive health.

4.Why is it important to take care of the balance of bacteria?

Because the balance of bacteria in our intestine helps us have a better digestion and overall health. Now we know that, if we do not have healthy eating and resting habits, the microbiota has an alteration and a common symptom is the increase in the production of sulfuric acids that causes the bad smell of gasses.

5. What can be one of the functions of these good bacteria in our body?

Bacteria are promoters of molecules that may be superior to the effect of drugs. We are studying how these affect the metabolism and immunity of different people in order to use them as therapy or treatment for certain diseases.

6. Why taking care of our intestinal microbiota is taking care of our health?

Because it has been demonstrated that the largest number of neurotransmitters responsible for well-being and happiness are produced here. 70% of the immune system is housed here. The pandemic has highlighted the great importance of taking care of our immune system. In that respect, Covid has been shown that ​​gut microbiota composition reflects disease severity.

7. Are all the strains of bacteria that exist in the gut known?

It is a world in constant study and here we harbor more than 30 trillion microorganisms so it is complicated to know each of these, especially because we each have a unique microbiota. What has been done, however, is creating a bank of strains that are in extinction due to the changes induced by the so-called Western lifestyle and it is freely available so that scientists can continue doing research and discovering more wonders of this organ.

The microbiota: a key organ for our health and well-being

  1. The microbiota coexists with food and not with specific nutrients.
  2. Fermented dairy products support the diversity of our microbiota
  3. A high-fiber diet may slow tumor growth
  4. Balancing the microbiota helps improve glucose response
  5. Fecal transplantation holds new promise for diseases such as colitis
Ximena Lopez

Ximena Lopez is a Functional and Clinical Nutritionist, specializing in digestive health, probiotics and microbiota.

Follow her on Instagram

23 May 2022
4 min read
Benefits for planet health

Dairy and plant-based dairy-like products make good partners for sustainability 

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You don’t have to give up all your favourite foods to make your diet more healthy and sustainable, latest research suggests. While most of us in Western countries need to eat less meat and more plant-based foods, the good news is that we can continue to enjoy our dairy foods in a nutritious diet with a reduced impact on the environment.

That’s the finding from a diet-modelling study of a French adults subgroup (1). It found that both dairy and fortified plant-based dairy-like (PBDL) products can facilitate our shift to a more sustainable, healthy diet.

So by retaining your usual dairy foods in your diet and perhaps also including PBDL products in your diet, you can find it easier to meet your own nutritional needs, cut down on the amount of meat you eat and increase the amounts of wholegrains, fruit and vegetables, and legumes, according to this modelling study.

What are plant-based dairy-like (PBDL) products?

Splash them on your cereals, add them to your coffee, or eat them as a creamy dessert; PBDL products are designed to look and ‘feel’ like milk or yogurt, and they can be used in the same way. They include drinks and spoonable desserts made from soy, almonds or oats. Often, they’re fortified with micronutrients (calcium, B vitamins and vitamin D).

These PBDL products are becoming increasingly popular as they offer a variety of tastes and textures, and provide alternatives for people with certain food intolerances. In addition, many people choose PBDL products because their production is associated with a low burden on the environment.

But when it comes to considering sustainability – including both health and environmental impacts of diets, and their cultural acceptability – it’s important to look at the whole diet and the contribution made by different types of foods. That’s why the researchers used a diet optimization model to work out the specific role of dairy and PBDL products in more sustainable diets for French adults.

Diets designed for a balance between human and planetary health

The researchers developed theoretical optimised diets for each of the 1077 women in the study, to model more sustainable diets that provided all the nutrients they needed while reducing the carbon impact by 30%. At the same time, the theoretical diets were kept as close as possible to the individuals’ actual diets, in term of food types and quantities consumed.

The optimised diets contained more plant-based foods (wholegrains, fruits and vegetables, pulses, nuts and seeds) and less meat than the actual diets. The overall amount of dairy foods remained the same between the actual and optimised diets, although with less cheese, more milk, and the same amount of yogurt in the optimised models.

In addition, nearly 58% of optimised diets contained PBDL products compared with only 7.3% of the actual diets.

PBDL products and dairy foods can both have a role within more sustainable diets

The study data showed that both dairy products and fortified PBDL products may help us achieve a more sustainable diet.

However, even in the optimised diets with addition of PBDL, the dairy consumption is not reduced; dairy & PBDL can be both present in a more sustainable diet. The study supports the need in Western countries to shift to a more plant-based diet containing less meat, especially red meat, than most of us eat currently (2).

The 4 pillars underlying sustainable diets are “nutrition and health,” “affordability and accessibility,” “cultural acceptability” and “environmental impact” (2). We need to find the combination of foods that provides the best balance between nutrition and environmental impact, while remaining culturally acceptable. Future sustainability studies should also consider accessibility and cost of food, not included in this current study. Fortified PBDL products, as a complement to dairy usual consumption, could help achieve the best balance and are likely to become an increasingly important part of sustainable diets in the coming years, according to the study.

Authors suggest that further studies should be carried out to assess the impact of diets containing dairy & PBDL products on other environmental factors, such as water resources and land use, as well as the acceptability of such diets.

Our results for French adults suggest that consuming fortified PBDL products in addition to dairy products can help increase diet sustainability, whereas our models did not find that substituting dairy products with PBDL products entirely was an effective strategy in designing more sustainable diets.’ – Gazan R, et al, 2022

Find out more: read the original article.
Source: (1) Gazan, R.,Vieux, F., Lluch, A., de Vriese, S., Trotin, B., Darmon, N. Individual Diet Optimization in French Adults Shows That Plant-Based “Dairy-like” Products May Complement Dairy in Sustainable Diets. Sustainability 202214, 2817
Additional reference:
(2) FAO; WHO. Sustainable Healthy Diets—Guiding Principles; FAO: Rome, Italy; WHO: Rome, Italy, 2019
16 May 2022
2 min read
Grant Application

3rd edition of the Danone International Prize for Alimentation

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May, 2022. The Danone Institute International opens its 3rd edition of the Danone International Prize for Alimentation (DIPA).

A prestigious Prize for Alimentation to mid-career researchers

The Danone International Prize for Alimentation (DIPA) rewards pioneering research that spans multiple disciplines and represents a major advance in Alimentation, the umbrella term for sustainable eating and drinking practices that contribute to the health of individuals, including food choice, purchase, preparation, cooking and meal organization, and their determinants.
The DIPA is awarded by the Danone Institute International* and the French research organization, Fondation pour la Recherche Médicale.

A call for application until October 2022

The Call for Application for the 3rd edition of DIPA is open until 16 October 2022.

Encourage innovative research in Alimentation

The purpose of the DIPA is to encourage and support cutting edge, innovative and multidisciplinary scientific research in Alimentation, the umbrella term for sustainable eating and drinking practices that contribute to the health of individuals, including food choice, purchase, preparation, cooking and meal organization, and their determinants. The award is intended to raise the profile of a mid-career researcher and accelerate his/her career, as well as help develop knowledge on the topic and inspire junior researchers.

The DIPA 100,000 Euros prize will recognize the work of a single researcher, or a representative of a research team, who is leading a pioneering and collaborative approach in Alimentation.
The Prize is open to research scientists from a variety of scientific disciplines within Alimentation, including behavioral science, sociology, anthropology, psychology, environmental science, economics, and cultural studies.
The DIPA aims to:

  • advance understanding of Alimentation through cutting edge research;
  • encourage and inspire pioneering advances that integrate lifestyle, cultural, socio-economic and environmental approaches into research on sustainable diets;
  • boost collaboration between the different disciplines affecting nutrition, from anthropology to economics;
  • support talented and highly motivated mid-career researchers whose work contributes to scientific excellence in the field of Alimentation

For further details on entries for the DIPA, please see the Rules and Regulations at www.danoneinstitute.org

* The Danone Institute International  was established in 1991 as a not-for-profit organization aiming to promote human health through developing and disseminating knowledge about the links between food and health, and to highlight the importance of nutrition in health. The Yogurt in Nutrition Initiative for Sustainable and Balanced Diets is funded by the Danone Institute International and conducted in collaboration with the American Society for Nutrition.

02 May 2022
10 min read
Q&A

What is a sustainable food ?

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Since the emergence of the concept of sustainability in the 1990s, governments and individuals have been multiplying efforts at all scales to initiate a transition towards sustainable diets, favoring seasonal agro-ecological production and fair and local production-consumption networks [1].

According to the EAT-Lancet Commission (2019), when it comes to protecting the environment, food remains one of the biggest levers and means of action to reduce your carbon footprint [2]. There is nowadays a recognition that the current global food system is indeed unsustainable, responsible for 30% of global greenhouse gas (GHG) emissions, 70% of water use and a huge loss of biodiversity [2]. And 49% of the habitable land is used by agriculture [3].

By switching to a more sustainable diet, we hold a possible solution to improve not only our own health but also that of the planet. It is not the food itself that is sustainable but the diet as a whole that can be sustainable and healthy.

Food choices for a sustainable diet

A healthy and sustainable diet is defined by four dimensions [4]:

  • with safe nutritionally-dense foods, included in a balanced healthy diet
  • culturally acceptable
  • accessible, affordable and equitable

The production must have a low impact on environment and preserve biodiversity and natural resources, ideally produced and consumed locally [1].

What is a sustainable food? - Yogurt in Nutrition

The best balance between these aspects is achieved by choosing a varied predominantly plant-based diet, combined with a reduction of food waste. Elements that are being part of the diet should be sourced in sustainable food production systems, i.e., local and seasonal [5].

According to the Food and Agriculture Organization (FAO) ‘Sustainable diets are those diets with low environmental impacts which contribute to food and nutrition security and to healthy life for present and future generations. Sustainable diets are protective and respectful of biodiversity and ecosystems, culturally acceptable, accessible, economically fair and affordable; nutritionally adequate, safe and healthy; while optimizing natural and human resources.’ [1]

A recent publication [5] examines the benefits and limitations of different types of diets in terms of health and nutrition, affordability and accessibility, cultural (ethical and religious) acceptability, and the environment. This review suggests that flexitarian diets and territorial diets (TDD) (Mediterranean or New Nordic diets for instance) can meet the energy   and nutrition needs of different populations without the need for dietary education or supplementation.

NB : Flexitarianism combine large amounts of plant-sourced foods, low levels of meat but moderate volume of poultry, fish, eggs and dairy, while TDDs are region-specific flexitarian diet that primarily includes seasonal, locally-sourced foods.

Moreover, even if further studies are required to define more precisely optimal sustainable healthy diets (taking into account the 4 pillars underlying these diets), those diets may have a more sustainable impact on the environment than Western diets (especially if diets include locally sourced seasonal foods). They may be more acceptable and easier to maintain than less diverse vegan/vegetarian/pescatarian diets for people transitioning from Western diets to sustainable healthy alternatives.

Nutrient-dense and healthy

A sustainable food is nutritionally safe, dense and healthy, it must prove a good nutrient-density, including a high-quality protein content, as well as fibers and vitamins.

Nutrition density refers to the “concentration of nutrients per amount food or caloric contribution of that food” [6]. It is the amount of nutrients provided by a portion of food, knowing its caloric intake. A nutritionally dense food provides many more nutrients than calories relative to the body’s needs.

The choice of sustainable foods within a varied healthy diet, such as flexitarian diets or TDDs, improves global health by reducing malnutrition and NCDs risk (no-communicable diseases) and nutritive deficiencies, but also by meeting the energy and nutrition needs without the need for dietary education or supplementation [4,5].

Contribute to protect biodiversity, while preserving natural resources

By adopting new food consumption habits on a collective and individual scale, it is now possible to reduce food-related GHG emissions and protect the planet’s natural resources.

Moreover, supporting a healthy and sustainable dietary pattern is one essential way to limit and prevent environmental degradation caused by what ends up on the plate [4].  Indeed, our global food system is today unsustainable because largely based on intensive exporting agriculture, and dependent on phytosanitary products and agricultural fertilizers [4]. The use of such chemicals and deforestation are a main driver of biodiversity loss, both in soil and aquatic ecosystems [4].

“Achieving healthy diets from sustainable food systems for everyone will require substantial shifts towards healthy dietary patterns, large reductions in food losses and waste, and major improvements in food production practices.” – Willett W et al, 2019

Economically accessible and culturally acceptable 

Sustainable food comes from responsible supply chains, valuing short circuits and local seasonal production.

Reducing the transport of goods and food is a major step in handling climate change already in place [5,8]. Buying over short distances limits the energy consumption of transport and the chances are local foods will also cost you less.

Furthermore, direct and seasonal sales from farmers to consumers through new local organizations is the best way to get good prices in a fair trade and educational relationship that reconciles urban citizens and producers [1,8].

Regarding sociocultural aspects, sustainable healthy diets are built considering with the respect of local culture and traditions. Culinary tools, practices and values, even religious and ethical believes regarding the way the food is produced, prepared and cooked, should be taken into account [4,5]. Furthermore, sustainable diets adoption must cut down gender-related impacts, especially with regard to time allocation (e.g. buying and cooking, water and fuel purchase) [4].

4 resolutions for a more sustainable diet

Our food choices may affect the future: thus, by reducing wastage and making healthier food choices, we can cut global GHG emissions by up to 50% [12,13]. In daily life, we can follow these resolutions :

  • Reduce the domestic food waste. With a better understanding of use-by dates, a weekly planned menu and proper storage conditions, we can make sure that all the products we buy will be consumed (and our wallet will also thank us).
  • Prefer seasonal and locally produced food [4,5]. Locally produced and seasonal fruits and vegetables are often low calories foods, rich in vitamins (A, C and K), minerals (copper, manganese and magnesium) and fibers [9,10]. It is necessary to keep in mind that the GHG Emissions reductions achieved by substituting plant-based foods for animal foods are offset by the environmental impacts of transporting out-of-season fruits and vegetables around the world, especially by plane [5]. Hence the importance of respecting the seasonality of products and ensuring that they are sourced locally as much as possible.
  • Limit the intake of added-sugar and ultra-processed foods (so-called “empty calories”). The latter encompass foods containing very low levels of essential nutrients (proteins, vitamins and minerals), in favor of fats and sugars that create an energy excess.
  • Add more nuts, seeds, beans, legumes and sprout in the diet. Nuts and seeds stand out for their protein, vitamin E and polyunsaturated fat content. The texture and shape make them the food of choice for balanced, nutritionally rich snacks [9]. In terms of global health and reduction of non-communicable diseases burden, the FAO emphasizes the importance of increasing nuts and seeds consumption [4]. However, although they show several nutritional benefits and a low energy use, the latter are deemed the fourth most water-irrigated foods as they are grown in dry climate regions, mostly in USA [11]. Consequently, their consumption must be reasonable. Beans, legumes and sprouts are plant-based protein sources and support the soil enrichment in nitrogen for the recovery of land they are grown in. [9]

Can yogurt be part of a sustainable diet?

Daily consumption of yogurt is an effective way of meeting nutritional requirements while combining a balanced calorie intake [14,15]. Yogurt brings through a low calory density formula numerous positive nutrients like protein, calcium, zinc, potassium, as well as vitamins (Vit. B) and probiotics for gut health [15,16,17]

Yogurt is a dairy product. Unlike livestock and especially beef, which is considered the biggest contributor to GHG emissions [4,18], dairy has a smaller carbon footprint. According to the FAO, the global dairy sector contributes to 4% of the global GHG emissions [20]. Even within dairy categories, yogurt and milk have lower carbon footprint than cheese [19].

According to the FAO/WHO guidelines on sustainable and healthy diets, a moderate dairy intake that respects nutritional recommendations fits into sustainable and healthy diets [4,19].

Yogurt is indeed a nutritive product with a moderate effect on the environment. Moreover, within a balanced diet, yogurt is one of the most common and accessible products. It can be easily found in small, medium and large stores, and fermented dairy products, as well as yogurt, are already part of several traditional diets around the world : greek yogurt, kefir, skyr, labneh and many more. Eventually, it stands amongst of the lowest cost sources of calcium and a very affordable high quality protein source [20].

Yogurt as part of sustainable diets - YINI
References:
  1. Burlingame B, Dernini S. Sustainable diets and biodiversity: Directions and solutions for policy, research and action. Food and Agriculture Organization. 2010.
  2. Willett W, Rockström J, Loken B, et al. Food in the Anthropocene: the EAT–Lancet Commission on healthy diets from sustainable food systems. Lancet. 2019;393(10170):447-492.
  3. Ritchie H, Roser M. 2019. Land Use. Our World Data.
  4. Food and Agriculture Organization of the United Nations; World Health Organization. (2019) Sustainable Healthy Diets, Guiding Principles.
  5. Luis A Moreno, Rosan Meyer, Sharon M Donovan, Olivier Goulet, Jess Haines, Frans J Kok, Pieter van’t Veer, Perspective: Striking a Balance between Planetary and Human Health—Is There a Path Forward?, Advances in Nutrition, 2021; nmab139
  6. Drewnowski A. et al., Nutrient profiling of foods: creating a nutrient-rich food index, Nutrition Reviews, 2008, 66 (1): 23-39
  7. WWF France. Towards a low carbon, healthy and affordable diet. 2018
  8. Food and Agriculture Organization of the United Nations. Sustainable Food and Agriculture. [Online].
  9. WWF, Future 50 foods. February 2019.
  10. Randhawa M et al. (2015) Chapter 18: Green Leafy Vegetables: A Health-Promoting Source. In: Watson RR (ed) Handbook of Fertility. Academic Press.
  11. Tom, M.S., Fischbeck, P.S. & Hendrickson, C.T. Energy use, blue water footprint, and greenhouse gas emissions for current food consumption patterns and dietary recommendations in the US. Environ Syst Decis, 2016, 36:92–103
  12. Hallström E, Carlsson-Kanyama A, Börjesson P. Environmental impact of dietary change: a systematic review. J Clean Prod. 2015; 91:1-11.
  13. Aleksandrowicz L, Green R, Joy EJM, et al. The impacts of dietary change on greenhouse gas emissions, land use, water use, and health: a systematic review. PLoS One. 2016;11(11):e0165797.
  14.  Keast DR, et al. Associations between yogurt, dairy, calcium, and vitamin D intake and obesity among U.S. children aged 8-18 years: NHANES, 2005-2008. Nutrients. 2015;7(3):1577-93.
  15.  Hess J, Rao G, Slavin J. The Nutrient Density of Snacks: A Comparison of Nutrient Profiles of Popular Snack Foods Using the Nutrient-Rich Foods Index. Glob Pediatr Health. 2017 Mar 30;4:2333794X17698525.
  16.  Rolls B., The Ultimate Volumetrics Diet, William Morrow, 2012.
  17. Smethers A. & Rolls B., Dietary management of obesity: cornerstones of healthy eating patterns, Med Clin N Am, 2018, 102 : 107-124
  18. van Hooijdonk T, Hettinga K, Dairy in a sustainable diet: a question of balance, Nutrition Reviews, 2015; 73 (1): 48–54
  19. Drewnowski A, Rehm CD, Martin A, et al. Energy and nutrient density of foods in relation to their carbon footprint. Am J Clin Nutr 2015;101:184–91.
  20. FAO, 2010, Greenhouse Gas Emissions from the Dairy. Sector : A life Cycle Assessment, p.13.

For more information:

  1. Short video: How can our diets protect both, human and planet health?
  2. Go local for a healthy sustainable diet
  3. Q&A about sustainable diets: What would a more sustainable diet mean for you?
  4. Q&A about sustainable diets: What is a flexitarian diet or flexitarism?
  5. Conference by Franz Kok – ASN, Baltimore, 2019 – Dairy & yogurt as part of sustainable diets
  6. Conference by Adam Drewnowski – ICD Granada, 2016 (Can yogurt be part of a sustainable healthy diet?)
25 Apr 2022
3 min read
Benefits for planet health

What are the nutritional impacts of Flexitarian and Territorial diversified diets? (video)

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People are changing the way they eat in an effort to follow a more sustainable diet. But what are the benefits and limitations of doing this in terms of health and nutrition?

A recently published review mentions that a global switch to Flexitarian and Territorial Diversified Diets may be a practical and affordable way to reduce the impact of our diet on the health of the planet …

These diets are rich in plants, with moderate amounts of poultry, dairy and fish and low levels of red meat, highly processed foods and added sugars. Territorial Diversified Diets are flexitarian-style diet that includes high intakes of seasonal and locally produced foods. In addition, these types of diet may also improve our health by helping to reduce the risk of nutrition-related diseases.

Also, compared to vegan and vegetarian diets, consuming these mostly plant-based diets with small amounts of animal products can help to easily meet recommended nutrient intake without the need for nutrient supplements, fortified foods, or professional advice for diet planning.

Following a mostly plant-based diet has many benefits…

These dietary patterns have been associated with lower risk of developing non-communicable diseases.

Flexitarian diets can better meet the nutritional needs of adult women, who have higher needs for certain nutrients.

For pregnant and breastfeeding women, Flexitarian and Territorial Diversified Diets are also considered ideal because they provide more fibers, high quality protein, vitamins and minerals than solely plant-based diets. These diets also help to better support the nutrient needs of breastfeeding women that are required by infants to ensure a healthy development throughout life.

And to prevent the risk of nutritional deficiencies, special attention needs to be given to children and adolescents to ensure that vegan and vegetarian diets meet their needs for growth and development.

Flexitarian and Territorial Diversified Diets have also been associated with better fitness, improved cognition and longevity among the elderly. While they are also likely to benefit from increased dairy and fortified plant-sourced drinks consumption, the inclusion of moderate amounts of eggs and small amounts of meat will help maintain vitamin B12 levels.

Flexitarian and TDD also include a diverse range of foods that help to increase our microbiome diversity, and such diversity can be further increased through the consumption of probiotic and fermented foods.

Adoption and maintenance of healthy sustainable diets will require attention, professional advice, guidance and research, but with better practices, we can ensure a better future for ourselves, our family and our planet.

Source: Moreno LA, Meyer R, Donovan SM, Goulet O, Haines J, Kok FJ, Van’t Veer P. Perspective: Striking a Balance between Planetary and Human Health: Is There a Path Forward? Adv Nutr. 2021 Nov 27;13(2):355–75. 
18 Apr 2022
5 min read
Benefits for planet health Infographics

Different diets and their impacts on health and planet (infographic)

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What we eat has a major impact on our health and the health of our planet. In order to qualify as sustainable and healthy, a diet must meet several criteria of health, economic, environment and social issues (1). With these elements in mind, let’s take a leap from theory to real life and take a closer look at the most common different diets: what are, for each of them, the benefits and limits in terms of health, social, economic and environment?

Discover, through this infographic, a detailed review of 6 common diets and their impacts on human and planetary health(3).

The Western Diet

The Western Diet is an omnivorous diet that includes all types of meat, fish/shellfish, dairy, eggs, honey, insects, and plant-sourced foods (e.g., fruits, vegetables, grains, pulses, legumes, nuts, seeds, tubers, fungi, algae) in any ratio. The Western diet is however characterized by high intakes of animal-sourced and processed foods and lower-than-recommended intakes of plant-sources foods (3).  It is recommended to shift from this type of diet to more sustainable healthy diets, incorporating more plant-based foods.

What is the western diet? - YINI

The Flexitarian Diet

The Flexitarian diet is an omnivorous diet that includes primarily plant-sourced foods (e.g., fruits, vegetables, unrefined grain, legumes, nuts, and seeds), moderate amounts of poultry, dairy and fish, and low amounts of red meat, highly processed foods and added sugar. The Flexitarian diet is ideal for people wishing to transition from a Western-style diet to a more sustainable healthy diet ; or for population without religious, cultural or ethical constraints who wish to follow a sustainable healthy diet, with a moderate amount of animal food products in order to meet their recommended nutrient intakes.

What is the flexitarian diet? - YINI

The Territorial Diversified Diet (TDD)

A Territorial Diversified Diet (TDD)  is a flexitarian-style diet that includes high intakes of seasonal, locally produced foods. Examples are the Mediterranean diet or the New Nordic diet.

Like the Flexitarian diet, the TDD is suitable for people wishing to transition from a Western-style diet to a more sustainable healthy diet, but who might struggle to maintain more restrictive diets, such as vegan, vegetarian and pescatarian diets. Also, these diets represent a more sustainable option, by focusing on regionally- or seasonally-available foods.

What are territorial diversified diets? - YINI

The Pescatarian Diet

A pescatarian diet is a vegetarian diet that excludes meat, insects, and gelatin, but includes plant-sourced foods, dairy and eggs, fish and shellfish. Pescatarian diets are good options for people who have constraints when it comes to following vegan, vegetarian and flexitarian diets, but also wish to switch to a healthier dietary pattern, for they are more inclusive towards different types of foods. They are rich in n-3 fatty acids and iron, especially essential for women of reproductive age. However, marine ecosystems are the same as others, meaning that fish stocks should be taken care of and overfishing needs to be controlled to maintain sustainability.

What is a pescatarian diet? - YINI

The Vegetarian Diet

Vegetarian diets are mainly plant-sourced foods, but depending on the type may include dairy and eggs. It excludes meat, seafood, insects, and gelatin. A Lacto-Ovo-Vegetarian diet includes dairy and eggs. Lacto-vegetarian diets include dairy products, but not eggs and Ovo-vegetarian diets include eggs, but not dairy.

Vegetarian diets can be adopted by people wishing to transition from a Western diet to a sustainable healthy diet; who might struggle to maintain a vegan diet or have religious, cultural or ethical beliefs that exclude flexitarian diets. Nutritional guidance is encouraged to ensure meeting recommended nutrient intakes.

What is a vegetarian diet? - YINI

The Vegan Diet

The vegan diet excludes all animal products, including meat, fish and shellfish, insects, gelatin, eggs, dairy, and honey. It can be suitable for people switching for a sustainable healthy diet and who have religious, ethical and social constraints that prevent them from consuming any kinds of animal products. Nutritional guidance is encouraged to ensure meeting recommended nutrient intakes.

What is a vegan diet? - YINI

The “historical” Western-style diet has been implicated in increased risks of obesity and non-communicable diseases and recent recommendations (1,2) favor adoption of diets richer in plant-based foods (Flexitarian, TDD or plant-based diets). On the other hand, traditional plant-based diets (vegan/vegetarian/pescatarian diets) are consumed by large numbers of people who wish to reduce their intake of animal-sourced foods. Compared with western diets, those diets can reduce the risk of obesity, NCDs and premature mortality while reducing the impact of food production on the environment. However, plant-based diets, particularly vegan diets, can increase the risk of nutritional deficiencies.

The need to move towards sustainable diets for the health of the planet is clear, but adoption of more sustainable, healthy diet must balance the individual’s personal feelings, tastes, economic and social constraints. Fortunately, there are many options for individuals and families to choose from.

Sources:
(1) FAO/WHO – Sustainable healthy diets: guiding principles – Oct 2019
(2) Willett W, Rockstrom J, Loken B, Springmann M, Lang T, Vermeulen S, Garnett T, Tilman D, DeClerck F, Wood A, et al. Food in the Anthropocene: the EAT-Lancet Commission on healthy diets from sustainable food systems. Lancet 2019; 393(10170):447-92.
(3)  Moreno LA, Meyer R,  Donovan SM, Goulet O, Haines J,  Kok FJ, van‘t Veer P. Perspective: Striking a balance between planetary and human health: Is there a path Forward?  Advances in Nutrition 2021; nmab139. doi: 10.1093/advances/nmab139