Pumpkins are so much more than just a fun holiday decoration. Not only are they one of the best-known sources of beta-carotene (an antioxidant that is converted to vitamin A in the body), but pumpkins are loaded with fiber, potassium, and vitamin C. On October 26 do yourself a favor and eat a hearty helping of pumpkin to celebrate National Pumpkin Day (and of course have a little fun carving them).