Vitamin B12, also known as cobalamin, is crucial for your health. It helps with red blood cell production, DNA synthesis, and the proper functioning of nerve cells. It's found in animal products and can also be taken as a supplement. For adults, the recommended daily amount is 2.4 micrograms. Adequate levels of Vitamin B12 are essential for bone health. Low levels can lead to osteoporosis. It also supports eye health, potentially reducing the risk of macular degeneration. Vitamin B12 can improve mood and may help with symptoms of depression, although more research is needed. It's also linked to better memory and cognitive function, especially in older adults. While it's not a direct source of energy, it helps combat fatigue by addressing deficiencies. Lastly, Vitamin B12 is important for healthy skin, hair, and nails. Deficiency can lead to issues like hyperpigmentation and nail discoloration. You can obtain Vitamin B12 through diet, supplements, or injections if you have absorption issues. Always consult with a healthcare professional for the best approach.