Fruit may seem like a clean eating option, but its hidden sugars may not always be the healthiest to include in your diet. Here, a doctor weighs in. Fruits are very nutritious and contain lots of fiber and antioxidants. However Everyone knows that fruits are healthy they are the default "health foods." . Many of the fruit juices on the market aren't even "real" fruit juices. The fruitarian diet: healthy or insane? of fruitarians don't even eat vegetables or starches literally just fruit. . Shop Fruitarian Necessities.