What Is the Kimkins Diet?

kimkins diet

Verywell / Debbie Burkhoff

At Verywell, we believe there is no one-size-fits-all approach to a healthy lifestyle. Successful eating plans need to be individualized and take the whole person into consideration. Prior to starting a new diet plan, consult with your healthcare provider or a registered dietitian, especially if you have an underlying health condition.

The Kimkins diet is a restrictive plan for weight loss created by a low-carb advocate who went by the pseudonym "Kimmer." The diet is dangerously low in calories, fat, carbohydrates, and fiber. The eating plan is partly based on the original Atkins diet (1972 version), hence its name.

In 2007, a Kimkins diet success story was featured on the cover of Woman's World magazine, which piqued public interest. However, controversy surrounding the safety of the diet ensued and a class action lawsuit followed by the end of the year. Women's World issued a public apology in 2008 for running the story, saying it could no longer stand behind it.

"Kimmer" declined to give her real name until the class-action lawsuit filed by paid members of the diet plan revealed her to be Heidi Kimberly Diaz. There was never any independent confirmation of her own weight loss and the diet's claims could not be verified. She is neither a healthcare professional nor a nutrition expert.

What Experts Say

"The Kimkins diet is a very low-calorie, low-carbohydrate diet. Many experts agree that a diet this restrictive puts followers at risk for nutrient deficiencies and other serious health issues, in addition to the risks to body image and relationship with food that all diets carry."

Willow Jarosh, MS, RD

What Can You Eat?

The Kimkins website, which is no longer in operation, had five different Kimkins plans. One was almost all protein—no fats, no vegetables, no dairy, etc. Another, listed as the most popular option, came out to about 500 to 600 calories per day. The vegetarian plan was limited to 1,000 calories per day. There was also a shake option which was 800 calories per day. The plans were written in a very basic way, and each one suggested to "take a complete multivitamin every day plus other desired supplements."

The Kimkins diet guidelines state that a day's eating generally shouldn't include more than 20 grams of total carbohydrates. This means that effective carbs plus fiber must not be more than 20 grams per day. However, the Kimkins sample menus on the website contained much less than this—at most, about 5 grams effective carbohydrate plus 7 grams fiber. This, compared to the Atkins induction phase, where 12 to 15 grams of effective carbohydrate from vegetables alone is now recommended, is dangerously low.

What You Need to Know

With such low calorie counts, there is not much room in this diet for three full meals a day, let alone snacks. It's been reported that the Kimkins website urged followers to feel "semi-nauseous all the time" (or "SNATT") due to hunger.

Following the class action lawsuit, the Kimkins website and weight loss program (which charged around $60 for a lifetime membership) was shut down; it is no longer available.

What to Eat
  • Lean proteins

  • Vegetables

  • Multivitamin

What Not to Eat
  • Grains and starches

  • Fruit

  • Sugars and sweeteners

  • Added fats

Lean Proteins

Lean protein, such as skinless chicken breast, makes up the great majority of the diet's suggested meals.


Vegetables are allowed on some Kimkins plans, but they must be limited because they contain carbohydrates.

Multivitamin Supplements

The Kimkins diet suggests taking a daily multivitamin because meals are lacking in so many nutrients.

Grains and Starches

The diet allows so few carbohydrates and fiber that grains and starches are essentially eliminated.


Since fruit also tends to be higher in carbs, fruits are also avoided on this diet.

Sugars and Added Sweeteners

Sugars and sweeteners add empty calories and carbs, so they are not permitted.

Pros and Cons

  • None

  • Dangerously restrictive

  • Fraudulent

  • Promotes disordered eating

  • Harmful side effects

The Kimkins diet was a popular diet scam during the early 2000s that facilitated rapid weight loss. However, this restrictive nature of this diet is dangerous, and it should not be attempted. There are no benefits to trying this diet plan and plenty of dangerous drawbacks.


Dangerously Restrictive

The Kimkins diet is very low in fiber, essential fatty acids, and many other nutrients. This is essentially a starvation diet that does not contain many of the nutritional basics to sustain life. A multivitamin and mineral tablet is recommended, but this ignores phytonutrients, fatty acids, and other nutrients. In lieu of fiber or even fiber supplements, laxatives are recommended—a potentially dangerous practice if taken on a regular basis.

The diet is also very low in calories. Diets that are extremely low in calories do not work in the long term. Eventually, the need for survival takes over and appetite increases. In the meantime, many health problems and side effects can result. Additionally, much of the weight coming off during such a regimen will not be fat, but water weight, muscle, and other lean body tissue.


In addition to the mysteries about her identity, Diaz came under scrutiny for banning paid members from her website if they disagreed with her and firing a spokesperson who questioned the diet's methods. It's now believed that Diaz never lost any weight on the plan herself.

Promotes Disordered Eating

The main attraction of the Kimkins site was the discussion forum. Although there was undeniably a strong community, very extreme eating behaviors—especially very low-calorie consumption—were encouraged (allegedly by Diaz and her employees).

People showing signs of eating disorders were also encouraged to keep going without intervention. Diaz also reportedly blamed followers for not being strict enough if they didn't continue to lose weight very quickly (up to a pound per day) and brushed off reports of side effects and health problems resulting from the diet.

Harmful Side Effects

Reports of hair loss, chest pains, heart palpitations, and amenorrhea (loss of menstrual cycle) have been associated with some people who lost weight on the Kimkins diet, which are symptoms of rapid, unhealthy weight loss commonly associated with hormonal disruptions attributed to anorexia nervosa.

The Kimkins diet is not safe and could lead to health problems and/or disordered eating.

Is the Kimkins Diet a Healthy Choice for You?

The U.S. Department of Agriculture (USDA) recommended dietary guidelines advise eating a mix of fruit, vegetables, grains, protein, and dairy products each day. The Kimkins low-carb, high-protein plan restricts most foods and food groups and doesn't provide adequate nutrition.

The USDA also recommends consuming an average of 1,500 calories a day for weight loss. But the Kimkins diet restricts calories to around 500 to 600 per day, which is extremely dangerous and should not be attempted without medical supervision.

The Kimkins was compared to the Atkins diet, but it is much more restrictive than Atkins or any other low-carb plan and does not meet any expert guidelines for healthy eating. It is not recommended that anyone attempt this diet plan.

Health Benefits

There are no benefits associated with the Kimkins diet and attempting this restrictive eating plan can be detrimental to your health and could lead to the development of an eating disorder.

Health Risks

While proponents of the Kimkins diet claim they successfully lost significant weight in a short period of time, reports indicate many people following the diet experienced dangerous side effects harmful to their health and well-being, including hair loss, chest pain, and amenorrhea.

A Word From Verywell

Though touted as an effective low-carb diet, the Kimkins diet is not similar to Atkins or any healthy low-carb approach. When you are looking for a miracle, you can be susceptible to getting caught up in something that looks like it will deliver. But when it comes to your health, stop and investigate. Get more opinions, and pay attention to the signs your body is sending. Listen for warning signals from others and put your health first. Talk to your doctor about a safe, effective weight loss plan that is right for you and your needs.

Remember, following a long-term or short-term diet may not be necessary for you and many diets out there simply don’t work, especially long-term. While we do not endorse fad diet trends or unsustainable weight loss methods, we present the facts so you can make an informed decision that works best for your nutritional needs, genetic blueprint, budget, and goals.

If your goal is weight loss, remember that losing weight isn’t necessarily the same as being your healthiest self, and there are many other ways to pursue health. Exercise, sleep, and other lifestyle factors also play a major role in your overall health. The best diet is always the one that is balanced and fits your lifestyle.

Was this page helpful?
Article Sources
Verywell Fit uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
  1. Wood D. Consumer Affairs. Kimkins Diet Rolls On Despite Founder’s Excess Poundage. February 25, 2008.

  2. ABC News. Online Diet Comes Under Scrutiny. Updated February 9, 2009. 

  3. Stein D, Keller S, Ifergan IS, et al. Extreme risk-taking behaviors in patients with eating disordersFront Psychiatry. 2020;11:89. doi:10.3389/fpsyt.2020.00089

  4. Mehler PS, Brown C. Anorexia nervosa - medical complicationsJ Eat Disord. 2015;3:11. doi:10.1186/s40337-015-0040-8

  5. U.S. Department of Health and Human Services and U.S. Department of Agriculture. 2015–2020 Dietary Guidelines for Americans. 8th Edition. December 2015.