Vitamin B12 is an important nutrient needed for many processes in the body. It can help with metabolism, DNA synthesis, blood cell production, and nerve function. Also, vitamin B12 can reduce homocysteine levels, high levels of which are related to chronic diseases like Alzheimer’s, stroke, and heart disease. Energy production also needs this nutrient.
In general, your body can take in vitamin B12 from animal-based foods, such as eggs, dairy products, seafood, and meats. Some non-dairy milks and cereals can also be fortified with this nutrient. A rare deficiency of vitamin B12 is quite rare, but a mild deficiency is quite common. If left untreated, it would cause complications like fatigue, nerve damage, and anemia.