Grapefruits are an excellent source of vitamin C.  The same as other citrus fruits, grapefruits contain bioflavonoids. compounds that increase the benefits of vitamin C.  Grapefruits are low in the  glycaemic index and very low in calories, which makes it ideal for dieters. Grapefruit  juice can alter  the effect of certain drugs – people who are medication should check their doctors before they consume the fruit.

The bitter taste of some grapefruits is caused by a compound called naringenin, which has cholesterol-lowering properties.

Grapefruits help reduce bouts of wheezing in asthma-prone people.

Grapefruit is delicious halved, sprinkled with demerara sugar and grilled for a short while.

Half pink grapefruit contains:

• 30  Kcalories
• 0.5 g protein
• 7.5 g carbohydrate
• 1.1 g fibre
• 37 mg vitamin C
• 127 mg potassium
• 770 mcg beta-carotene
• 15 mg calcium