Vitamin B12

Vitamin B12, also known as cobalamin, is an essential nutrient that plays a vital role in producing red blood cells, supporting nerve function, and aiding in DNA synthesis. It's naturally found in animal products like meat, eggs, and dairy. A deficiency can lead to fatigue, weakness, anemia, and nerve problems. The body absorbs B12 through the stomach and small intestine, often requiring a protein called intrinsic factor. Since B12 is water-soluble, excess amounts are expelled in urine. Maintaining adequate levels through diet or supplements is important for overall health, especially for vegetarians, vegans, and older adults.