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Nutritional Density
Food guide

Grapefruit

A tart citrus with high water content, vitamin C and, in pink varieties, lycopene.

FruitPlant-Based
Grapefruit, a nutrient-dense fruit food, photographed on a plain linen surface

Nutrition per 100 g

Standardised to 100 g of grapefruit for fair comparison. Typical serving: 1/2 fruit (123 g) — 52 kcal per 123 g serving.

Nutrition information for Grapefruit
NutrientPer 100 gPer serving (123 g)Per 100 kcal
Energy42 kcal52 kcal100 kcal
Protein0.8 g1 g1.9 g
Carbohydrate10.7 g13.1 g25.2 g
Fat0.2 g0.2 g0.4 g
Fibre1.6 g2 g3.8 g

Figures are typical values and vary with variety, preparation and brand.

Micronutrients

Vitamins and minerals per 100 g of grapefruit, with a typical serving and FDA Daily Value for adults.

Micronutrients for Grapefruit
NutrientPer 100 gPer serving (123 g)% DV
Vitamins
Vitamin C38 mg46.7 mg42%
Thiamin0.062 mg0.076 mg5%
Riboflavin0.1 mg0.12 mg8%
Niacin0.26 mg0.32 mg2%
Vitamin B60.06 mg0.074 mg4%
Minerals
Calcium21.4 mg26.3 mg2%
Iron0 mg0 mg0%
Magnesium9.6 mg11.8 mg2%
Phosphorus20.1 mg24.7 mg2%
Potassium156 mg192 mg3%
Sodium0 mg0 mg0%
Zinc0.029 mg0.036 mg<1%
Copper0.026 mg0.032 mg3%
Manganese0.016 mg0.02 mg<1%

Source: USDA FoodData Central — Grapefruit, raw

% DV uses FDA Daily Values for adults. Nutrients that USDA does not report for this entry are omitted. Values vary with variety, preparation and brand.

Why eat grapefruit?

  • Very low calorie density with a satisfying volume.
  • Bitter compounds make it a good appetite-slowing starter.
  • Vitamin C helps iron absorption at the same meal.

How to include it

  • Segment into a salad with avocado and rocket.
  • Grill halves with a little honey.
  • Squeeze into a dressing with olive oil.

Things to consider

  • Interacts with statins and several other medicines — check with a pharmacist.
  • Acidity can bother reflux and tooth enamel.

Educational content. This article is for general information and is not medical advice. Speak to a qualified health professional about your individual circumstances.

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