Grapefruit is the new popular superfood that is excellent for weight loss. This fruit is rich in Vitamin C and has a huge amount of fibre. In fact, one serving of grapefruit contains 2 grammes of fibre and just 53 calories. Also, grapefruit can help regulate blood sugar levels and reduce the levels of insulin in the body. This fruit also helps cut down cravings and aid in weight loss. For the best results, have a portion of grapefruit for breakfast, first thing in the morning.