Keto BodyTone Additionally, the total quantity and variety of products examined by the FDA annually is unknown. Until (or unless) better oversight is out there, supplements are more likely to stay the Wild West of American well being. Vegans: Vegetarians and vegans are prone to B12 deficiency since animal foods are the only pure meals source of this vitamin (). Consequently, supplementation is often useless; a 2018 meta-analysis discovered that the vast majority of vitamin and mineral dietary supplements have zero well being profit, echoing the results of many years of investigation with the same conclusion. Some studies show multivitamins can contribute to an elevated risk of extreme nutrient intakes, and it has been suggested that multivitamins should be formulated with higher consideration for the intakes of micronutrients from foods.