all this is wierd. These studies are ridiculous because this study tells you about reducing cancer and there are a lot more that says that Vitamins in larger quantities are bad and nobody knows what the "enough" quantity is. There are many studies that point out that eating vitamin supplements increases the risk of cancer and stuff. The only observation that works for me even though a lot of papers have been published claiming it to be false is the one that Linus Pauling talked about - VITAMIN C! ;)