Vitamin C acts as an antioxidant and helps to protect the cells of the body from the potentially damaging effects of free radicals, which can contribute to the development of serious medical conditions such as cancer and cardiovascular disease. It also helps to produce collagen which is important for maintaining a healthy skin and bone structure. In addition, it also helps our bodies to absorb iron. Fruit sources: apples - bananas - blackberries - cantaloupe melon - grapes - kiwi fruit - lemon - lime - oranges - peaches - strawberries - tomatoes - watermelon. Vegetable sources: artichoke - asparagus - avocado - broccoli - carrots - cauliflower - corn - cucumber - green peppers (capiscum) - kale - mushrooms - onions - peas - potatoes - spinach - summer squash - sweet potatoes - winter squash.