The old Welsh proverb “an apple a day keeps the doctor away” is grounded in current research.
Nutritionally, apples are low in calories, providing only 50 calories per 100 grams. An average apple is about 90 calories, rich in dietary fiber (~ 4 grams of soluble fiber per apple), and contains fair amounts of Vitamin C and beta-carotene, two powerful antioxidants. Apples are a good source of B-Complex vitamins and contain minerals such as potassium, phosphorus, calcium and boron.