Updated: 04/18/2017 - Site operated by Leptigen

Diennet Diet Review - Does This Weight-Loss Program Work?

  • 5 User Comments
  • Rating: 3.7. From 9 votes.
By Summer Banks Apr 15, 2017

We’re hearing a lot of buzz about the Diennet Diet, so we did one of our in-depth reviews, looking closely at the ingredients, side effects, customer service quality and scientific studies. We also examined hundreds of dieter comments from around the web. At last, we summed up all of the facts and details we collected to give you the bottom line.

Diennet Diet Readers: Click here to find out why we're giving away samples of our product, Leptigen.

What is Diennet Diet?

Firstly, the Diennet Diet ingredients include custom meal plans and herbal supplements. You’ll follow the program based on the answers of your initial questionnaire. Both women and men of all body types can use it.

The Diennet Diet is a weight-loss program started by Dr. Marcel Diennet. It’s located in Beverly Hills and was founded in 1975.  A helpful FAQ section is provided, in addition to some dieter testimonials, but read on…

High Cost – “Can You Afford It?”

The first issue we found that needed attention was Diennet Diet price. According to our Research Editor, “Some people may not be able to handle the overall cost, but it is a little too high for others. The official website states that this weight-loss plan is $45 per week, which is $180 per month.”

“I paid $590. It’s been over two months and I still have NOT lost even a pound! I eat a very healthy low fat diet and I exercise! I stopped drinking alcohol and increased my exercise,” said one patient.

“Way too expensive for me! Will cost you more than $500 if you try it!,” mentioned another individual.

Diennet Diet Guidelines – “Strict”

From what we gathered, the Diennet Diet is quite strict in regards to what you can actually eat. One person commented, “This is a very strict diet, so you must be prepared. I was not.”

“Too difficult for me to follow. Not the right weight-loss plan for me. I need something simpler…and cheaper,” said another dieter.

According to our extensive research, if there is one specific aspect of a diet program that is especially problematic or concerning (high cost, strict diet guidelines, too many customer complaints) the likelihood of long-term weight-loss success is slim. In other words, if the Diennet Diet is too difficult for a lot of people to handle, this could a serious problem.

The Science – “Solid?”

We could not locate any actual science on the official website that supports the Diennet Diet. We could assume since this is regulated by medical doctors, it must be backed by some clinical studies. But, that’s not always the case. However, you have to consider the fact that it is free to follow a similar plan at home and there are clinically proven supplements. For us at DietSpotlight, we actually prefer to see some real research that supports the pill or program we’re looking into.

The Bottom Line – Does the Diennet Diet Work?

So, should you jump in the car and head on over? First off, we appreciate that the Diennet Diet is customized for each specific individual. We also like that this program has stood the test of time. On the downside, we noticed several complaints about the actual cost of the Diennet Diet, which is more than enough to give us pause. Also, some dieters have stated that this weight-loss program is too strict and that’s concerning.

If you’d like to really get rid of that excess weight, then we suggest you go with a weight-loss supplement that is backed by solid science, is available at an affordable price and is supported by plenty of encouraging customer reviews.

Among the best products we’ve seen this year is one called Leptigen. This supplement uses a unique blend of four key ingredients, which have been proven in published clinical studies to help ignite metabolism and speed up fat loss. We can’t pinpoint any talk of harmful adverse effects and customer reviews posted on the web indicate people are seeing excellent results.

The makers of Leptigen are so confident in their product they’re offering a Special Trial Offer, which is very encouraging.

Previous Diennet Diet Review (Updated January 8, 2009):

What You Should Know About Diennet Diet

The Diennet Diet is a program founded by Dr. Marcel Diennet, began in 1996 and launched online. This doctor's first practice actually began in 1973 (Paris, France), and he established the Diennet Institute in Beverly Hills in 1981. This online method is a weight loss program for virtually anyone. The Diennet Diet is designed specifically to suit you as an individual. A questionnaire is filled out and you are given a personalized diet plan (can last for a minimum of three months).

When you become a member of this online diet program, you receive a weight tracking diary to note your progress, a database of diet recipes, before and after photos to track your progress, order streamlining, regular access to a medical expert, and a weekly diet menu sent to you by email. The Diennet Diet doesn't merely address weight reduction or fat loss as a whole, but rather focuses on specific conditions like cellulite. Other conditions that are addressed on the Diennet Diet website are PMS and Menopause. New patients must provide a "valid doctor exam" and a "valid blood test." There is a link on the website discussing common over-the-counter diet supplements, and how they may not work at all. However, there does appear to be a supplement formula incorporated into the Diennet Diet program to potentially assist with weight loss.


Not provided on the official website.

Product Features

The Diennet Diet is a weight reduction program that involves online counseling, as well as filling out a questionnaire regarding your body type and current condition. According to the official website, a personalized weight loss program is created for each individual that signs up for the Diennet Diet. Unlike many other weight management programs and supplements, this company endeavors to assist with issues like Menopause and PMS as well as fat reduction. If you take a look at the order page of the official website, you'll quickly notice that the cost of the Diennet Diet is $540 for a three month treatment. This purchase includes a supplement as well, which is taken in doses of six capsules per day.

Advantages of Diennet Diet

  • The Diennet Diet weight loss program is suitable for anyone.
  • There are programs/products offered that assist with issues like PMS, Cellulite and Menopause.

Disadvantages of Diennet Diet

  • There doesn't appear to be before and after photos presented on the official website for the Diennet Diet.
  • The cost of this weight reduction program is a whopping $540 for a three month period, which may be too expensive for some dieters.
  • Full lists of ingredients for the dietary supplements offered through the Diennet Diet program are not revealed on the website.

Conclusion: Diennet Diet

Although the Diennet Diet apparently started several years back, some individuals may not find this weight loss program as suitable and effective for their needs. It's a plus to see information posted on the website regarding the doctor who founded the Diennet Diet. Then again the actual price of this fat loss program may raise a few eyebrows at the cost of $540, which will not be conducive to some dieters' bank accounts.

Diennet Diet Questions & Answers:

We weeded through hundreds of user comments about the Diennet Diet and created this helpful FAQ.

What are the side effects of the Diennet Diet?

Some of the potential side effects from the Diennet Diet, according to customer reviews, include upset stomach, nausea, irregular bowel movements and dehydration.

What are the ingredients in the Diennet Diet?

There’s no information about the ingredients in the Diennet Diet. The program details food choices and the use of customizable capsules.

Does the Diennet Diet work?

There are no links to published clinical research proving the Diennet Diet works. Although eating less could help with weight-loss, that can be said for similar plans.

You may want to improve results from Diennet Diet by adding a supplement like Leptigen, which contains ingredients backed by scientific studies.

How much does the Diennet Diet cost?

The cost of the Diennet Diet is $45 per week or $180 per month.

How should I follow the Diennet Diet?

You should follow the Diennet Diet in four steps. The first being a questionnaire; second requires you to submit a blood test and complete a doctor’s examination. The third involves data being run through a software program and the final stage is a review of your customizable program.

Can I follow the Diennet Diet if I have a health condition?

Women who are pregnant or nursing, those with health conditions, anyone taking prescription medications or those under 18 years of age should reach out to a healthcare professional prior to starting any weight-loss program, including the Diennet Diet.

What do users like about the Diennet Diet?

We found some dieters liked the customized plans on the Diennet Diet.

What do users NOT like about the Diennet Diet?

Some users didn’t like the food restrictions and the high price of the Diennet Diet.

How do I contact the Diennet Diet customer service department?

You can contact the Diennet Diet customer service department by emailing info@diennet.com, using the feedback form, calling a representative at 1-800-272-3436 or by mailing letters to The Diennet Institute 9454 Wilshire Blvd. Suite M4 Beverly Hills, CA 90212.

How long do I follow the Diennet Diet?

You follow the Diennet Diet for approximately 18 months.

Can I skip meals on the Diennet Diet?

Yes, you can skip meals on the Diennet Diet, although the company recommends eating balanced meals on a regular basis.

What can’t I eat on the Diennet Diet?

You can’t eat sweets, bread or drink alcohol on the Diennet Diet.

Does the Diennet Diet come with a guarantee?

The Diennet Diet doesn’t come with a guarantee.

Do you know of any special deals or discounts on the Diennet Diet?

There are no special deals or discounts on the Diennet Diet. However, the past several months have raced by, considering our readers have been taking advantage of Leptigen’s Special Trial Offer, which is just the cost of shipping and handling. Click here to give it a go.

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Dietspotlight Author
About the Author:

Summer Banks, a content strategist at Leptigen, has researched over 5000 products in the past 10 years. She has years of nursing training, experience as a manager responsible for 15 supplement brands, and completed coursework on Food and Nutrition from Stanford University. full bio.

Rating: 3.7. From 9 votes.
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User Comments

5 Comments on "Diennet Diet Review"


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I’ve lost 13lbs in 3 weeks with no side effects! I love this product.


I did the Dienner plan 4 years ago and lost 60 pounds – my goal weight loos. I couldn’t afford to keep it up and graduallt gained back the 60 pounds, but I just didn’t try to keep it off. This was hands down the easiest weight loos I ever experienced – no bread, no sugar, but it takes away your craving for it so it was so not a problem.


Excellent program, I lost 20 pounds because of this diet, I loved it , very easy to follow. If I have to do it again I will definitely reorder Diennet weight loss program.


I gained 95 pounds with my first pregnancy and struggled to take off the weight. After my second child was born I again fought the battle, but this time I used the Diennet program, That was is 1994. I quickly lost the weight and over the last 17 years have been at about the same weight within a 10 pound range, I love these pills