Updated June 27, 2019

Niacinamide helps prevent skin cancer, NEJM, 2015

This article demonstrates a 25% reduction in certains skin cancers by taking niacinamide 500 mg two times per day.  There is other research that suggests that niacin can help with many cancers.When a major medical journal publishes a positive article about a supplement, they must have rock-solid evidence.  Abram Hoffer MD, author of “Niacin,” demonstrates that negative reports about supplements are proportional to the number of drug ads in medical journals. Therefore, There is no explanation of the reason for this dosing, other than this is a common dosage. There is also no explanation of why they focused on skin cancer.