9. Grapefruit
Yes, grapefruit really can help you shed pounds, especially if you are at risk fordiabetes.
Researchers at Scripps Clinic in San Diego found that when obese people ate half a grapefruit before each meal, they dropped an average of 3 ½ pounds over 12 weeks. Drinking grapefruit juice had the same results. But grapefruit juice doesn't have any proven "fat-burning" properties -- it may just have helped people feel full.Be careful: You cannot have grapefruit or grapefruit juice if you are on certain medications, so check the label on all your prescriptions, or ask your pharmacist or doctor.