How Many Calories in Grapefruit?
1/2 grepfrut mediu (120g) = 50 kcal
Nutritional Values per 100g
Standard Serving
1/2 grepfrut mediu (120g) contains 50 calories.
Best time: Excellent at breakfast or as a snack between meals, thanks to its low calorie content and high vitamin C
Benefits
- ✓Very low in calories (42 kcal/100g) and high in water content - excellent for weight management and hydration
- ✓An excellent source of vitamin C - half a grapefruit covers nearly the entire recommended daily amount
- ✓Contains naringenin, a flavonoid antioxidant associated with anti-inflammatory effects
- ✓Low glycemic index, with slow release of natural sugars into the blood
- ✓Soluble fiber (pectin) contributes to satiety and supports digestion
Considerations
- !Interacts with numerous medications (statins, some blood pressure drugs, immunosuppressants) by inhibiting a liver enzyme (CYP3A4) - check with your doctor if you take medication
- !The bitter taste comes from naringin - some pink or red varieties are sweeter than white ones
- !The acidity can affect tooth enamel or trigger reflux in sensitive people, especially when eaten on an empty stomach
FitAzi Tip
FitAzi recommends half a grapefruit as a starter before a meal for extra fiber and vitamin C without a significant calorie impact. If you take medication, check for possible interactions first, as grapefruit is one of the few foods with well-documented drug interactions.
Frequently Asked Questions
A whole medium grapefruit (about 240g) has around 100 calories, while half a grapefruit (120g) has about 50 calories. Per 100g, grapefruit has only 42 calories, making it one of the lowest-calorie citrus fruits.
Grapefruit can support weight loss thanks to its low calorie content (42 kcal/100g), satiety-boosting fiber, and low glycemic index. However, there's no magic "fat-burning" effect - the benefit comes from it replacing higher-calorie snacks, not from a special mechanism of the fruit itself.
Grapefruit contains compounds (furanocoumarins) that inhibit a liver enzyme (CYP3A4) responsible for metabolizing many medications, including statins, some blood pressure drugs, and immunosuppressants. This can lead to higher-than-intended levels of the medication in the blood. If you take chronic medications, ask your doctor or pharmacist whether grapefruit is safe for you.
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Nutritional values shown are approximate and may vary depending on preparation method and origin. Consult a nutrition specialist for personalized recommendations.