Vitamin B-12

Vitamin B-12 is necessary to produce red blood cells and prevent anemia. Anemia a condition in which the body doesn't have enough healthy red blood cells to carry oxygen to all parts of the body. Vitamin B-12 is found almost exclusively in animal products, so it can be difficult to get enough B-12 on a vegan diet. Vitamin B-12 deficiency may go undetected in people who eat a vegan diet. This is because the vegan diet is rich in a vitamin called folate that can mask vitamin B-12 deficiency. For this reason, it's important for vegans to consider vitamin supplements, vitamin-enriched cereals and fortified soy products.