Which food is a rich source of vitamin B12?

Vitamin B12, also known as cobalamin, is essential for several bodily functions, including nerve function, red blood cell production, and DNA synthesis. It is primarily found in significant amounts in animal products. Foods such as meat, fish, poultry, eggs, and dairy are excellent sources of vitamin B12. These products contain the bioactive form of the vitamin that the human body can readily absorb and utilize.

In contrast, fruits, vegetables, and whole grains typically do not contain measurable amounts of vitamin B12. While some fortified foods and plant-based alternatives may have added B12, the natural sources of this nutrient are predominantly from animal origins. This makes animal products the clear, rich source of vitamin B12 essential for those who consume a diet inclusive of these foods.