Lactose intolerance is the inability to digest lactose that results in intestinal discomfort such as bloating, diarrhea, and gas. However, these symptoms are not specific to lactose intolerance and can be associated with psychological factors, such as stress and emotional trauma, or intestinal dysfunctions occurring, for example, during infection or malnutrition.
It is important to remind that lactose intolerance is not a disease but a condition. It means that it is not deleterious for your health. It is also important that lactose intolerance shall not be confused with cow’s milk protein allergy.
Sources:
Crittenden et al. J Am Coll Nutr 2005; 24: 582S-91S.
Luyt et al. Clin Exp Allergy 2014; 44: 642-72.
Misselwitz et al. United European Gastroenterol J 2013; 1: 151-9.
