It has been thought that aging is caused by free radicals in the body, but antioxidants can fight it by destroying these free radicals. However, a recent study comparing genetically engineered nematodes that can Killfree radicals with normal ones found no difference in age and lifespan. 
Other studies have found that antioxidants can speed up the recovery of damaged cells, even if they don't protect against aging.
 it can be concluded that antioxidants have no effect on human health.