Niacin is an essential part of the human body. Also known as Vitamin B3, it works hard in the process of metabolism and even aids in the process of DNA repair. It is also vital in the area of hormone production, aiding the adrenal glands in this process. Because niacin is so vital to normal body function, it is even more harmful when this substance becomes off kilter. Meaning, when you have too much or too little niacin, problems are sure to arise.

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