You've got to be careful about antioxidants - some are very biologically active. Best thing in general is to eat an assortment of fruit, and a bit of cruciferous vegetables. Eating huge amounts of rosemary, a very powerful antioxidant, may not be a good idea, but small amounts now and then are okay. The key is to avoid the free radical damage in the first place, and that means cutting out unsaturated fatty acids, except in very small amounts - olives should be okay, for example. Don't cook foods which contain cholesterol while exposed to air, so eggs, high in cholesterol, are great, but only if boiled. And no baked goods that contain dairy. Coconut oil and butter are good fat sources - get unrefined coconut oil and organic butter, though. Dark chocolate, at least 70% cocoa mass, is great too.