Not all apples will keep the doctor away. Given the wide variety of apples in the U.S. and farming (well, technically, apples are cloned) that focuses on juice and sweetness rather than variety and nutrition, the most popular apples in the supermarket are rarely the most nutritious. Besides looking for certain types of apples – Granny Smith and Red Delicious are two top picks – look for fruit that is evenly colorful, since the dark skin comes from exposure to the sun and denotes high nutrients. With the notable exception of Granny Smiths, Cortlands, and Honeycris

ps, fruit with darker skin is best for scoring the highest levels of antioxidants.