1. Choose low-glycemic foods - Those with a blood sugar index below 55. Apples have a glycemic index of 36.

2. Apples' sweetness comes from soluble sugars - They contain about 10% soluble sugars, including fructose, glucose, and sucrose. Fructose is the sweetest. Organic acids give them a slightly acidic taste.

3. Benefits of apples - They fight fatigue, stabilize blood sugar, aid digestion, boost immunity, and slow aging. 4. Caloric content - A medium apple has 100 kilocalories, similar to a small rice bowl. Apples are a good snack.

5. Antioxidants in apples - They're rich in vitamin C, vitamin E, flavonoids, and pectin. These antioxidants eliminate free radicals, enhance resistance, improve immunity, and control blood sugar.