There are two primary concerns that people have when it comes to blending fruit – Fiber and Sugar. Fruits have lots of dietary fiber and blending them can break down the fiber. You will always consume more fiber if you eat the fruit whole, but I know when it comes to kids, sometimes it’s a fruit in smoothies, or no fruits at all! Fruits also have a lot of sugar, so if you are using smoothies for weight loss, you will want to be aware of how much fruit you are using. Weight loss smoothies should have more vegetables than fruit.