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Home / All / Nutrition Is Grapefruit Keto? Should You Avoid Citrus on Keto? Written by Ketogenic.com FACT CHECKED Published on August 9th, 2021 Reading time: 2 minutes Last modified June 28th, 2023 ShareTweetPinEmail
Grapefruit is a citrus fruit that is a cross between an orange and a pomelo. There are several color varieties of grapefruit including white, pink, yellow, and red, but they are primarily pink or red on the inside. Grapefruit has a sour taste and is not as traditionally sweet as mostfruit. Since they are more sour than sweet, some assume they are lower in sugar. Does that mean they are low carb? Is grapefruit keto?
Grapefruit Nutrition Facts
One small grapefruit weighs approximately 200 grams. A 123g serving size (1/2 a grapefruit) contains 37 calories, 9.22g of carbs, 1.35g of fiber, 0.1g of fat, and 0.676g of protein. [1]
Health Benefits of Grapefruit
Grapefruit is often considered a healthy food because it is low in calories and high in nutrients. Because of this, grapefruit is often seen as a weight-loss food. Since grapefruit is low in calories, contains a lot of water, and has a very sour taste, many find that it is a helpful snack when trying to lose weight.
One study found that consuming grapefruit may benefit insulin resistance. This 12-week study found that individuals consuming one grapefruit a day lost 3.5 lbs, whereas the individuals not consuming grapefruit lost <1 pound. [2]
Grapefruit packs a substantial amount of vitamin C (37mg per 1/2 grapefruit serving). It also provides vitamin A, potassium, and calcium. [1]
Some research also suggests that consuming grapefruit may be beneficial for heart health. One study found that consuming grapefruit may help improve blood pressure and reduce the risk for heart disease. [3]
Is Grapefruit Keto?
One whole small grapefruit contains about 20g of carbohydrates, 3g of dietary fiber, and 17g of net carbs. Since the average ketogenic dieter consumes less than 20 grams of carbs a day, grapefruit are not traditionally considered keto-friendly. Grapefruit is also low in fat and the ketogenic diet is a high-fat diet.
That being said, some individuals are able to eat up to around 50 grams of carbs a day on the ketogenic diet. Grapefruit is not considered alow-carb fruit; however, if portioned, it could be consumed in moderation. For example, 1/4 of a grapefruit has about 4g of net carbs.
When consuming grapefruit on low-carb diets, it’s important to eat only in moderation and to closely monitor the carb count so that you do not exceed your total daily carbs on keto.
It should also be noted that grapefruit juice should be avoided, for the most part. Grapefruit juice tends to have added sugar and less fiber.
Do You Eat Grapefruit on the Keto Diet?
Comment below and share your thoughts with thecommunity! Is grapefruit keto? Or do you avoid it?
Ketogenic.com At ketogenic.com, we are committed to supporting, inspiring, and educating people on the benefits of living a ketogenic lifestyle. We do this by bringing together the top researchers, practitioners, and thought-leaders who provide resources, experience, and awareness associated around the Ketogenic diet. Utilizing the latest cutting-edge research along with practical experience, the team at ketogenic.com aims to foster awareness, understanding, and connectedness in helping others optimize their life on a ketogenic diet.
References
1.
Basic Report: Grapefruit, raw, pink and red, Florida. https://fdc.nal.usda.gov/fdc-app.html#/food-details/174675/nutrients
2.
Fujioka K, Greenway F, Sheard J, Ying Y. The effects of grapefruit on weight and insulin resistance: relationship to the metabolic syndrome. J Med Food. 2006 Spring;9(1):49-54. doi: 10.1089/jmf.2006.9.49. PMID: 16579728.
3.
Dow CA, Going SB, Chow HH, Patil BS, Thomson CA. The effects of daily consumption of grapefruit on body weight, lipids, and blood pressure in healthy, overweight adults. Metabolism. 2012 Jul;61(7):1026-35. doi: 10.1016/j.metabol.2011.12.004. Epub 2012 Feb 2. PMID: 22304836.
Discussion
Scott says: June 10, 2022 at 9:00 pm
I juice half a grapefruit a day on keto. I’m not thrown out of ketosis but this is the only carbs I give myself other than what’s naturally in other foods. I don’t count net carbs anymore but I stay around 30 or so. Don’t be afraid to add something healthy to your diet every now and then.
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Doctor Ketone Guide 
Dr. Ryan Lowery 2 years ago Research More Articles → 
A Guide to Pescatarian Keto Ashley Simpson 2 years ago Nutrition
Dry Fasting Vs. Water Fasting: Is One Better Than the Other? 
Steph Green 2 years ago Lifestyle 
Air Fryer Breakfast Burrito 
Rhonda Plata 2 years ago More BreakfastRecipes → 
Turkey and Zucchini Noodles 
Pressure Cooker Cuban-Style Chicken 
Blackberry Protein Popsicles 
Skinny Cadillac Margarita Shelley Wells 4 years ago More Drinks Recipes →
Sugar-Free Hot Honey Meatballs 
Easy Keto Dill Pickles 
Written by Ketogenic.com FACT CHECKED Published on August 9th, 2021 Reading time: 2 minutes Last modified June 28th, 2023 
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Grapefruit is often considered a healthy food because it is low in calories and high in nutrients. Because of this, grapefruit is often seen as a weight-loss food. Since grapefruit is low in calories, contains a lot of water, and has a very sour taste, many find that it is a helpful snack when trying to lose weight.
Scott says: June 10, 2022 at 9:00 pm
Doctor Ketone Guide By Dr. Ryan Lowery 
A Guide to Pescatarian Keto By Ashley Simpson 
Dry Fasting Vs. Water Fasting: Is One Better Than the Other? By Steph Green 
Should You Put Collagen in Your Coffee? By Ashley Simpson 
Keto and TRT (Testosterone Replacement Therapy): How They Complement Each Other By Tiffany Yamut 
As a Member, you get instant access to personalized meal plans, exclusive videos & articles, discounts, a 1 on 1 Coaching Session, and so much more. As a member, you join our mission of empowering 1,000,000 people to positively change their lives throughout the world. Get started today.