Grapefruit Carb Counts and Health Benefits

Grapefruit Carbs, Nutritional Information, and Selection and Storage

Grapefruit
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 When it comes to fruit on a low-carb diet, grapefruit can be one of the better choices. Pink and white grapefruit have similar amounts of carbohydrate, although red and pink grapefruit have more health benefits.  In addition, grapefruit has a low glycemic index, so is less likely to raise blood sugar than most other fruits.

Carbohydrate and Fiber Counts for Grapefruit

  • ½ medium white grapefruit (3¾" diameter): 9 grams of effective (net) carbohydrate plus 1 gram of fiber and 38 calories.
  • 1 medium pink or red grapefruit (3¾" diameter): 11 grams of effective (net) carbohydrate plus 2 grams of fiber and 37 calories.
  • 1/2 cup of grapefruit sections, with juice: 7 grams of net carb plus 1 gram of fiber and 35 calories.

Glycemic Index for Grapefruit

One study of grapefruit had an average glycemic index of 25.

More Information about the Glycemic Index

Glycemic Load of Grapefruit

  • ½ medium white grapefruit (3¾" diameter): 3
  • ½ medium pink or red grapefruit (3¾" diameter): 3

More Information about the Glycemic Load

Health Benefits of Grapefruit

Grapefruit are an excellent source of vitamin C. Pink grapefruit also contains lycopene, and all grapefruit contain other compounds such as limonoids which appear to have anti-cancer effects.  There is also some evidence that regular consumption of grapefruit can help lower LDL cholesterol in the blood.

Because of enzyme interactions, grapefruit can affect the action of some medications in your body.

  Some of the medications of concern are immunosuppressant medications, cyclosporine, statin drugs, and calcium channel blockers.

More About Grapefruit:

Selecting and Storing Grapefruit

Did you know that as a grapefruit ripens, the antioxidant levels increase?

Try to find grapefruit that has no green color left on the outside, and smells like ripe fruit.  Avoid fruit that has soft or soggy areas, and choose fruit that are heavy for their size.  No one likes a dried-out grapefruit.  Also, avoid grapefruit with skins that are rough or wrinkled, as these can have very thick skins.

Grapefruit can be kept at room temperature if you are going to eat them within a few days, otherwise, store them in the refrigerator. It is a good idea to wash the skins before cutting into them, as some grapefruit have been found to have bacteria on the outside.

More Information About Grapefruit at Calorie Count Plus.

More Carb Profiles

Sources:

Dahan A, Altman H. Food-drug interaction: grapefruit juice augments drug bioavailability--mechanism, extent, and relevance. European Journal of Clin Nutrition 2004 Jan;58(1):1-9. 2004.

Dreier JP, Endres M. Statin-associated rhabdomyolysis triggered by grapefruit consumption.

Neurology. 2004 Feb 24;62(4):670. 2004. PMID:14981197.

Leroux, MarcusFoster-Powell, Kaye, Holt, Susanna and Brand-Miller, Janette. "International table of glycemic index and glycemic load values: 2002." American Journal of Clinical Nutrition. Vol. 76, No. 1, 5-56, (2002)

Muller, T, et al. "Colorless tetrapyrrolic chlorophyll catabolites found in ripening fruit are effective antioxidants.." Angewandte Chemie (International ed. in English). 46(45):8699-702. (2007)

USDA National Nutrient Database for Standard Reference, Release 20

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