This is an old saying, and nothing more. Apples do not have any magical powers to prevent disease, but scientists have proven that apples do give the human body much of the potassium that it needs. This mineral, combined with many others, does help keep the human body strong and healthy.
There are nearly 10,000 varieties of apples grown throughout the world. Of these 10,000, more than 7,000 are grown in the United States!