Fruit Isn't Making You Fat, and Here's Why to enjoy cherries, berries, melon and other juicy gems as part of a healthy weight loss strategy. Scientists arenâ€™t sure why, but it may be because fruits tend to replace higher. Everyone knows that fruits are healthy they are the default "health foods." . of nothing but fruit (82% of calories) and nuts (18% of calories) for 6 months. But even if you get % real fruit juice, it is still a bad idea. There is. Where Does The “Fruit Makes You Fat” Idea Come From? be more likely to put on weight than if you eat lower calorie fruits like strawberries. In moderation, fruit is an excellent choice as a healthy source of carbohydrates.