Regarding the other nutrients listed, all these nutrient requirements can be met by plant foods, except for vitamin B12, but this can be supplied through fortified soybean milk, nutritional yeast grown on a B12 medium, or through supplementation.
Even without supplementation, reports of vegans suffering from vitamin B12 deficiency are extremely rare.
If you are currently a vegetarian or vegan, one of the most powerful health expectations for adopting this lifestyle is that you will outlive your “hamburger eating” neighbors by escaping cancer, In fact, if truth be told, your lifelong dietary deprivations will not prolong your lifespan, but rather will produce multiple nutrient deficiencies that are associated with numerous health problems and illnesses. Omega-3 (n-3) fatty acids, cardiovascular disease and stability of atherosclerotic plaques.
If you have forced plant based diets upon your children, or unborn fetus they will also suffer. Now let’s let the data speak for itself and get into the science of vegetarian diets and health.
Well-planned vegetarian diets are appropriate for individuals during all stages of the life cycle, including pregnancy, lactation, infancy, childhood, and adolescence, and for athletes.” I don’t know what planet the authors of this paper came from or what scientific journals they have been reading, but these statements simply are not supported by the data. Bucciarelli P, Martini G, Martinelli I, Ceccarelli E, Gennari L, Bader R, Valenti R, Franci B, Nuti R, Mannucci PM. Any unified theory of human nutrition is a detective story in which scientists attempt to reveal or uncover biological systems that have been designed by, and put into place by evolution through natural selection. Accordingly, hypotheses regarding what we should and shouldn’t eat must be consistent with the system and ancient environments that engineered our current genes. Cogswell ME, Looker AC, Pfeiffer CM, Cook JD, Lacher DA, Beard JL, Lynch SR, Grummer-Strawn LM. Cordain L, Miller JB, Eaton SB, Mann N, Holt SH, Speth JD. It is only when calorie needs are not met that the body will preferentially utilize proteins as an energy source, and this may result in deficiencies.Such conditions are mostly found in populations where malnutrition is a common phenomenon.However, a diet that excludes all animal products might seem restrictive, and indeed can be, if certain criteria are not met.