Dr. Valter Longo, who has been researching the fast-mimicking diet (also autophagy and longevity) says you're probably safe taking vitamins every 3 days. Becaus

Dr. Valter Longo, who has been researching the fast-mimicking diet (also autophagy and longevity) says you're probably safe taking vitamins every 3 days. Because that should minimize or eliminate potential long term damage of the vitamins while also ensuring you don't become deficient in certain vitamins. Sounds pretty reasonable to me. In a previous HN thread some were mentioning that "Vitamin E causes cancer" study. But it was over a 12 year period and the people were taking like 15x the RDA dose every day. And even then I think it only increased the "chance" of cancer by like 20% (I may be not be remembering that part right, though).