We’ve been told for decades to eat our fruits and vegetables. A lot of our favorites, including grapes and bananas, are high in sugar. While we’re cutting back on sugary treats and snacks, should we be limiting our intake of certain fruits, too?Missing: spirit. Although part of a healthy diet, some fruits can raise blood sugar quickly, Without the fiber, fruit beverages turn to glucose quickly in your bloodstream. She is Board Certified in holistic nutrition and a Certified Food and Spirit Practitioner. Get the know on fruit sugar and which fruits offer the most benefits. It's no secret that fruits are healthy – in fact, they are the healthiest, purest.