Grapefruit Diet – Science behind grapefruit diet

The grapefruit diet – history

The grapefruit diet has been around since the 1930’s!. Wow. I thought it had been around for a while but never dreamed it had been around for almost 100 years already. According to Wikipedia, it was a fad diet from the 1930’s and has also been called the “Hollywood diet” and been mistaken for the Mayo Clinic diet. And whilst the “grapefruit diet” may have been a fad, there is more and more scientific evidence that suggests that adding grapefruit to the diet does in fact aid weight loss. Research also suggests that grapefruit may also aid in fighting metabolic syndrome and also fight insulin resistance.

Scientific studies which support the fact that the “grapefruit diet” or rather adding grapefruit to your diet can boost weight loss efforts.

There are numerous studies which support the fact that a grapefruit diet, or adding grapefruit to your diet can boost weight loss and also fight other metabolic diseases which are associated with obesity.

Grapefruit diet

Grapefruit diet

In a study published by the Journal of Medicine in 2006, researchers studied 91 obese patients. They divided the patients into four groups. One group received a placebo (i.e. fake grapefruit), one group received grapefruit juice, another group received grapefruit juice with apple juice, and the final group received fresh grapefruit. The results of the study were as follows:

The fresh grapefruit group lost significantly more weight than the placebo group. A secondary analysis of those with the metabolic syndrome in the four treatment groups demonstrated a significantly greater weight loss in the grapefruit, grapefruit capsule, and grapefruit juice groups compared with placebo … In metabolic syndrome patients the effect was also seen with grapefruit products. Insulin resistance was improved with fresh grapefruit.”

In another study published in the Journal of Phytotherapy Research, researched tested what effect an extract of red orange, grapefruit and orange had on weight loss and metabolism. The study found that the extract:

“is a viable option for reducing abdominal fat, waist and hip circumference, and body weight and for improving inflammatory, glycemic, and oxidative status in healthy overweight individuals”

These are just two of the studies on the effect of grapefruit diet on weight loss, but clearly the truth of the diet lies more in fact than fad.


So how do you apply the grapefruit diet to your own weight loss plan?

From the studies above, as well as other studies it seems to be best to add fresh grapefruit or fresh grapefruit juice to your diet. Although the studies at this stage all agree that researchers don’t know how grapefruit helps weight loss, more and more agree that grapefruit does indeed help with weight loss. And since they don’t seem to know how just yet, I would assume its best to eat mother nature the way she intended.

Having fresh grapefruit juice with breakfast daily or better still, some fresh grapefruit may be the best way to include it in your diet.

There are however some warnings about grapefruit interacting with certain medications so it is very important to discuss your planned dietary changes with your doctor, health care specialist or physician before you make big changes to your diet.

Another excellent way of adding grapefruit to your diet is through making your own fat flush water. Here is a link to FFW which can be used as a detoxifying liquid before or during dieting.

Our free guide on Fat Busting Foods contains grapefruit recipes, ideas and tips. To download the guide and read about the grapefruit diet, click below.

To download your copy of the free Fat Busting Foods Guide, click here.


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  1. Pingback: The Top 10 Detox Foods and How to Use Them to Detoxify Your Body

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