The grapefruit diet was amongst one that the very first fad diet to be introduced to the public.

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Popularized together the “Hollywood diet,” the grapefruit diet entails eating grapefruit or drinking its juice v every meal.

Supporters that the diet case grapefruit can help burn fat, easily leading to weight loss in as couple of as 12 days. Yet there’s restricted research to assistance these claims.

This write-up explores the study behind the grapefruit diet and whether a grapefruit diet is effective and also safe for weight loss.

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What is the grapefruit diet?
Unlike single food diets prefer the cabbage soup diet, the grapefruit diet consists of much more than just grapefruit.

The diet calls for a protein-rich meal setup that incorporates a grapefruit or grapefruit juice in ~ every meal.

The grapefruit diet promises quick and also rapid load loss early out to claims that grapefruit has fat-burning enzymes.

Supporters that the diet believe you can lose as lot as 10 pounds in 12 days.

Despite anecdotal evidence, yes sir no study that supports claims of this fat-burning enzyme.


The grapefruit diet incorporates grapefruit right into every meal and promises rapid weight loss due to fat-burning enzymes discovered in grapefruits. However, yes no research study to assistance this claim.

How to monitor the grapefruit diet

There are multiple version of guidelines because that the diet, yet many sources claim it have to last 2 or 3 weeks.

Every version is short in carbohydrates and calories and high in protein.

In some versions, the diet calls because that consuming no much more than 800 calories every day.

Generally, people following the grapefruit diet deserve to prepare your foods however they like, consisting of with spices, salad dressings, or butter.

Examples that meals include:

Breakfast: two boiled eggs, two slices that bacon, and also 1/2 grapefruit or 8 ounces the grapefruit juiceLunch: salad through dressing, any type of meat in any type of amount, and 1/2 grapefruit or 8 ounces of grapefruit juiceDinner: any type of meat prepared any way, salad or red and also green vegetables, coffee or tea, and also 1/2 grapefruit or 8 ounces that grapefruit juiceBedtime snack: 8 ounces of skim milkSummary

Multiple versions of the grapefruit diet exist, but every variation is high in protein and low in carbohydrates and also calories. Some versions border you to simply 800 calories every day.


Incorporating low calorie, highly nutritious foods items like grapefruit into your diet is a smart and also healthy selection — not just for load loss, if that’s her goal, yet for your overall health.

A solitary grapefruit has over 60% of your recommended day-to-day intake of vitamin C.

Vitamin C has actually antioxidant properties known to protect and also strengthen your immune mechanism (1).

In addition to protecting her immune system, research reflects that grapefruit intake is linked with higher intake of magnesium, potassium, dietary fiber, and also improved diet quality (2).

Fiber and antioxidant-rich fruits favor grapefruit may assist protect against heart an illness and hit (3, 4).

Grapefruit’s fiber-rich content might also help you feeling fuller and eat fewer calories throughout the day (5), i m sorry may aid with load loss.

Although grapefruit has long been associated with load loss (6), more research is required to support this claim.

Since no clearly established guidelines for the grapefruit diet exist, it’s impossible to evaluate the full benefits of this diet.


Grapefruits space low in calories and highly nutritious. That said, much more research is necessary to support claims that castle can aid with load loss.


Although grapefruits room a low calorie, nutrient-dense choice with countless health benefits, this diet is problematic for other reasons.

There’s no evidence of miracle fat-burning enzymes linked with grapefruits.

Quick, short-term weight loss linked with the grapefruit diet is likely because of the short calorie and also low carbohydrate intake (7). This would an outcome in quick, short-lived weight loss even without the grapefruit.

While low-calorie diet may an outcome in initial weight loss, they’re hardly ever successful for those seeking irreversible results.

There are wellness drawbacks, too.

Low calorie diets have the right to weaken her bones, lower your metabolism, and cause fatigue, muscle loss, and also nutrient deficiencies (8, 9, 10, 11).

Another an unfavorable aspect of the diet arrangement is its limitations.

Twelve work on together a minimal plan might be possible, however eating the very same foods and such few calories every day might lead some world to at some point abandon the plan.

The grapefruit diet is additionally ambiguous. With multiple versions, it’s bound to reason confusion among followers.

In addition, most salad dressings and also meats you have the right to eat top top the grapefruit diet — particularly the everyday morning bacon — room high in saturated fats and also cholesterol.


Low calorie diets choose the grapefruit diet may an outcome in initial weight loss, yet they have their share of wellness drawbacks. The border diet is also unsustainable, limiting, and also confusing.

Although cases of some magical fat-burning enzyme in grapefruits no backed by research, research studies have discovered grapefruit to be positively linked with load loss.

One study uncovered that participants that consumed grapefruit daily with meals experienced diminished waist dimension (12).

A 2014 study found that body weight, belt circumference, and also body mass table of contents (BMI) were lower amongst female grapefruit consumer when compared to non-consumers (13).

More current research is required to identify the connection between grapefruit consumption and weight loss.

Although quick and temporary weight loss is possible on the grapefruit diet, it’s probably because of the truth that you’re consuming less than 1,000 calorie a work (14).

Promises of shedding 10 pounds in 12 job is unrealistic and also unsustainable.

You may initially lose load on this diet. However studies show that short calorie diets rarely keep weight off for great (15, 16).


Studies have discovered grapefruit can aid with weight loss, however weight ns on the grapefruit diet may be because of consuming under calories.

More current research is essential to determine the connection in between grapefruit and weight loss.

Grapefruit juice and also fresh grapefruit deserve to be component of a balanced, healthy diet (17).

But grapefruit can likewise interfere with certain medications, including:

some antihistamines, such together Allegra (fexofenadine)

Grapefruit juice often tends to interfere through the action of this drugs due to the fact that it includes a course of chemicals dubbed furanocoumarins.

Studies show that furanocoumarins may rise the blood level of over 85 medicines (18).

By slowing down how your body generally breaks down drugs in her gut and also liver, grapefruit have the right to increase the side impacts of this drugs, enhancing your hazard for complications.

For other drugs, such as antihistamines, grapefruit may have the the contrary effect, to reduce the drug’s effectiveness (19).

Ask your medical professional or pharmacist if you can have fresh grapefruit or grapefruit juice while acquisition these and other medications.


Grapefruit have the right to be part of a healthy diet, however it can also interfere with details medications. Ask your doctor before consuming grapefruit when taking medication.

Outside of a pair of tiny studies, yes sir no evidence to suggest there’s any magical power discovered in grapefruit various other than the fact that that a short calorie, highly nutritious citrus fruit.

While this diet may aid you fall pounds quickly, the load will most likely return as conveniently as that left.

It’s a fast fix without any type of real potential of permanent sustainability.

Well-rounded diets incorporate a range of healthy foods and fruits.

Instead of concentrating just top top grapefruits, aim for the encourage 2 come 2.5 cups of fruits per day (20).

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Grapefruits deserve to be part of this servings — however you don’t need to consume them at every meal.