Duchaine was big on 500mg right before training for its anti-imflamatory effects. Studies show it works, google it. I really don't give a shit about cancer, but I know vit-C is a help for joint inflamation and muscle recovery. Shit loads of free radicals are released when the muscles are broken down during training, C cleans that shit up. Plus, its so cheap that the cost-benefit analysis give it good value. There's tons of bullshit I would never spend money on NO, glutamine, bull testicles, and all the shit supplement companies are pushing. But, I do take vit-C caps and vit-B injects. Can't go wrong with basic micronutrient and the macronutrients (PRO, FAT, CRB). My 2 cents....