There is a related paper that I can't seem to find. The gist of which was: Studies on the cancer-fighting prowess of many antioxidants often fail to mention th

There is a related paper that I can't seem to find. The gist of which was: Studies on the cancer-fighting prowess of many antioxidants often fail to mention that your body naturally synthesizes a lot of antioxidants (e.g. melatonin and glutathione). While ingested antioxidants are known to protect cells in vitro and theoretically do so in vivo, relative to naturally synthesized antioxidants they might account for little additional protection. (If someone could find that paper, I'd appreciate it.)