PMID 25195560
Vitamin B12 deficiency can occur less frequently as a result of nutritional habits (strict vegans, breastfed infants born to vegan mothers with reduced dietary intake of animal products), drug interference (metformin, proton pump inhibitors, drug-affected purine, and pyrimidine synthesis), inherited disorders affecting intrinsic factor (IF) and other inherited disorders including methylmalonic acidemia and transcobalamin II deficiency nitrous oxide abuse, Diphyllobothrium latum infection, and pancreatic insufficiency.[] Metformin is considered a cornerstone in the treatment of diabetes and is the most frequently prescribed first-line therapy for individuals with type 2 diabetes
Serotonin helps with our overall well-being and mood
Compounded peptides should come from pharmacies that provide Certificates of Analysis documenting identity, purity, and absence of endotoxin
People on vegan or strict plant-based diets need a reliable source from fortified foods (nutritional yeast, fortified plant milks, certain breakfast cereals) or a supplement