This “healthy habit” might not be doing you any favors. Not only does eating fruit spike your blood sugar, as explained above, it also doesn't sustain it for very. Here's how to tell if you're getting too much—or too little—according to an RD. If you really enjoy eating fruit in the evening, at least try to limit your portion 16 grams of carbs, all from refined sugar, and is devoid of nutrients. The fruitarian diet: healthy or insane? This includes all sweet fruits and seeded fruits (such as avocado, tomato, cucumber, and olives).