Yes, this effect is better. And there are no side effects, so you can rest assured that grapefruit is one of the most beneficial fruits to lose weight. Grapefruit is not only low in sugar content, but also rich in cellulose, which can eliminate constipation. It is the best fruit for detoxification and slimming. Studies have shown that eating 1-3 grapefruit a day can achieve the best slimming effect, and of course eating before meals is better!