By Real Simple
Updated July 26, 2011
Credit: Harrison Eastwood/Getty Images

($0.83 per pound)

Whoever said “an apple a day keeps the doctor away” knew what she was talking about. The versatile fruit is loaded with pectin, which lowers glucose levels and bad cholesterol. Some studies also indicate that apples improve memory by stimulating the production of necessary neurotransmitters, which may help fight Alzheimer’s disease.

Prices for apples vary depending on season, but abundant apple harvests in the fall can drop prices to rock bottom in some areas.

Try this: 4 Tasty Ways to Enjoy Apples