Variety is key when packing your fridge with produce. From berries to carrots, each fruit or vegetable has different good-for-you antioxidants. These compounds help fight off free radicals, molecules that exacerbate the effects of inflammation, sun damage, and aging. Go for the recommended five servings (or more) of fruits and vegetables a day. Scottish researchers found that two extra servings of produce each day noticeably improved skin tone in six weeks.