Just what is the fruitarian diet and why is it getting so popular? “a subset of raw veganism where you eat botanical fruits in their natural state. Fresh fruit is a healthy choice and loaded with vitamins and antioxidants; however fruit For example, just one cup of raspberries contains 8 grams of fiber. Why is that bad? Enjoy fruits in moderation but focus on eating more vegetables. When you only eat fruit, you're excluding a lot of valuable nutrients from your Eating an all-fruit diet isn't the best way to keep your body healthy and strong. .. one question: "All I really wanted to know was why this diet was bad?" Ehret believed in eating nothing but fruits and starchless vegetables like.