Fertility: Antioxidant-rich diets have been shown to improve fertility. Because free radicals also can damage the reproductive system, foods with high antioxidant activity like pineapples that battle free radicals are recommended for those trying to conceive. The antioxidants in pineapple such as vitamins C, beta-carotene and the vitamins and minerals and copper, zinc and folate have properties that affect both male and female fertility.5