Grapefruit is a hybrid fruit, which was created by crossing sweet orange with pomelo. It has a sweet-sour taste, and is grown with white, red or pink edible flesh.
A rich source of vitamin C, grapefruit also contains dietary fibre and is an excellent source of vitamin A, choline, potassium and lycopene. Lycopene is a carotenoid which plays a vital role in eye health, and which also functions as an antioxidant, helping to stem the cell damage caused by free radicals.
Grapefruit also contains a flavonoid called naringenin, which is known to regulate blood sugar levels and to aid the liver in burning fat instead of storing it. Some studies have shown that eating grapefruit before a meal can aid weight loss, and some believe it has detoxifying and liver-protective properties too.
Grapefruit has anti-inflammatory properties, which may make it useful in the fight against many chronic diseases. It is also thought to help reduce cholesterol, improve insulin resistance and may contribute to healthy skin via a boost to collagen production.
Grapefruit does have known interactions with a number of prescription drugs, and can lead to them either not being metabolised properly, so that too much remains in the body, or not being absorbed properly in the first place, so care should be taken if you are on medication.