1. Fruit juice has more calories than whole fruit because its sugars are concentrated, so your body will experience a quicker rise in blood sugar than if you eat a piece of fruit..
2. Grapefruit juice has the least calories, and prune juice is one of the highest.
3. Juices fortified with calcium and vitamin D are a good way to get much-needed bone nutrients.
4. Concentrated juices have almost as many nutrients as fresh fruit, but not the same amount of fiber.
5 Juice "drinks" are packed with sugar and have very little nutritional value. Look for labels that say 100% juice.