1. Energy Metabolism: Vitamin B3 is essential for the metabolism of carbohydrates, fats, and proteins, which are the main sources of energy for the body.
2. Cholesterol Regulation: Vitamin B3 can help to lower levels of LDL cholesterol (the “bad” cholesterol) and increase levels of HDL cholesterol (the “good” cholesterol), which can help to reduce the risk of heart disease.
3. Skin Health: Vitamin B3 can help to improve skin health by reducing inflammation and redness, and improving the skin’s ability to retain moisture.
4. Nervous System Function: Vitamin B3 is important for the proper functioning of the nervous system. It helps to maintain the myelin sheath, which is the protective covering around nerve cells, and also plays a role in the synthesis of neurotransmitters, which are the chemicals that transmit messages between nerve cells.

1. Meat: Meat, such as chicken, beef, and pork, is a good source of vitamin B3.
2. Fish: Fish, such as tuna and salmon, are also good sources of vitamin B3.
3. Whole Grains: Whole grains, such as brown rice, quinoa, and whole wheat bread, are good sources of vitamin B3.
4. Legumes: Legumes, such as lentils, black beans, and kidney beans, are also good sources of vitamin B3.
5. Vegetables: Vegetables, such as mushrooms, asparagus, and sweet potatoes, are good sources of vitamin B3.

Vitamin B3 supplements are also available in various forms, including tablets and capsules. The recommended daily intake of vitamin B3 for adults is 14-16 mg per day for women and 16-18 mg per day for men, although higher amounts may be needed for certain populations, such as pregnant and breastfeeding women. It’s important to obtain vitamin B3 from food sources whenever possible, as supplements may not provide the same health benefits as whole foods