A sweet heart 2. A calorie from sugar provides exactly the same energy as a calorie from any other food, including diet foods. A surprising fact is that sugar contains only 4 calories per gram (or 15 per teaspoon full), which is less than some fruits

A sweet heart. A calorie from sugar provides exactly the same energy as a calorie from any other food, including diet foods. A surprising fact is that sugar contains only 4 calories per gram (or 15 per teaspoon full), which is less than some fruits