Niacin involved with over 400 NAD+ dependent reactions. Essentially all cancer patients are deficient in niacin. Exposing mice to high levels of UVB radiation to induce skin cancer showed that mice on the highest doses of niacin had the lowest rate of skin cancer at 28% compared to 68% in the control group.
Most "niacin" products are niacinamide. If you want the form discussed in this research, look for nicotinic acid specifically.
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Shop PureBulk →Pure nicotinic acid powder. No fillers, flexible dosing. This is the form studied in the GPR109A and lipid metabolism literature — not niacinamide.
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