With respect to antioxidants, there had been mounting evidence recently that antioxidants could paradoxically increase cancer risk. The evidence so far is that

With respect to antioxidants, there had been mounting evidence recently that antioxidants could paradoxically increase cancer risk. The evidence so far is that there are cellular pathways that spool up in the presence of oxidants and can cause cells to undergo cell death. Antioxidants can hinder these pathways from firing and instead, allow cells to linger around longer than they should.