Niacin, also known as vitamin B3, is a water-soluble vitamin that is essential for human health. It plays an important role in energy metabolism, helping your body convert carbohydrates, fats, and proteins into energy.
In addition to its role in energy metabolism, niacin also helps maintain the health of your skin, nervous system, and digestive system. It can help lower cholesterol levels in the body, which may reduce the risk of heart disease. Niacin may also have benefits for brain function and may help reduce symptoms of depression and anxiety.
Niacin is found in a variety of foods, including meat, fish, poultry, nuts, and whole grains. Deficiency in vitamin B3 can lead to a condition called pellagra, which can cause symptoms such as skin rashes, diarrhea, and dementia. However, deficiency in vitamin B3 is rare in developed countries, as many foods are fortified with this essential vitamin.