Antioxidants are like fireproof gloves, catching the sparks and protecting us. Each antioxidant becomes ' hot' and passes the oxidant to another until there is no more danger - so they work cooperatively. The key players are vitamin E (seeds, nuts and fish); vitamin C (fruits and vegetables); vitamin A and beta-carotene (orange or red foods); glutathione (onions and garlic); and anthocyanidins (berries and beetroot). You can top these up with an all-round antioxidant supplement that contains each of the above.