The Top 15 Diets Celebrities Swear By for Weight Loss

When it comes to maintaining a fit physique, few people know how to do it better than celebrities. Though many follow a seriously strict fitness regimen, famous folks are also well-known for their precise dietary needs. And there are certain diets that celebrities have praised over the years.

Curious as to how your favorite celebs are eating? Here are the diets they promise keep them in the best shape of their lives (including No. 7, which may be the most sustainable of them all).

1. The 5-Factor Diet

Lady Gaga attends Glamour's 23rd annual Women of the Year awards

Lady Gaga | Dimitrios Kambouris/Getty Images for Glamour

Celebrities who use it: Rihanna, Eva Mendes, Lady Gaga, Megan Fox, Katy Perry

There are plenty of celebs who are fans of the 5-factor diet — and that may be because it’s a lot less restrictive than other meal plans on the list. Shape explains fitness expert Harley Pasternak is famous for starting this diet trend. Essentially, every meal should contain just five components: protein, complex carbs, fiber, fat, and fluids. Everyone following the plan should allow themselves five meals per day with just five ingredients each, and one cheat day is allowed per week that allows you to eat whatever you’d like.

Next: One royal’s sister swears by this diet.

2. The Dukan Diet

Pippa Middleton (C) sister of Britain's Catherine Duchess of Cambridge

Pippa Middleton (C) sister of Britain’s Catherine Duchess of Cambridge | Miguel Medina/AFP/Getty Images

Celebrities who use it: Pippa Middleton

This fad diet reminds many of Atkins — and if you want to live life like Kate Middleton’s sister, you should certainly try it. Healthline explains Dr. Pierre Dukan, a French general practitioner, created the diet. It consists of meals that are high-protein and low-carb. There are also four phases of the diet: The first two are when you’ll lose the most weight, and the last two are designed for the long-term maintenance of your goal weight.

Next: You’re definitely familiar with this favorite system. 

3. Weight Watchers

U.S. singer Jennifer Hudson poses on the red carpet on arrival for the BRIT Awards 2018

Jennifer Hudson | Tolga Akmen/AFP/Getty Images

Celebrities who use it: Oprah, Jennifer Hudson, Jessica Simpson, Tina Fey, Jenny McCarthy

Weight Watchers is all about sustainable results rather than yo-yo dieting or quick fat loss that results in even more weight gain down the line — and that’s one of the reasons it’s regarded as one of the best diets available today. And the best part about Weight Watchers is that you can eat whatever you want as long as you stick to the “Points” system.

Many celebrities swear by the long-lasting results, too. Women’s Health reports Jennifer Hudson lost 80 pounds on Weight Watchers after the birth of her son in 2009, and Jessica Simpson lost over 50 back in 2014.

Next: This low-carb diet was all the rage back in 2003. 

4. The South Beach Diet

Actress Kim Cattrall attends the photocall for the film 'Meet Monica Velour' during the 36th Deauville American Film Festival on September 11, 2010 in Deauville, France.

Kim Cattrall | Francois Durand/Getty Images

Celebrities who use it: The Clintons, Kim Cattrall, Nicole Kidman

If you remember the South Beach Diet taking the world by storm, you probably also recall celebs like Bill Clinton and Kim Cattrall endorsing it. The diet was created by Arthur Agatston, M.D., a cardiologist who found the best way to lose weight was to choose the perfect carbs and fats to intake rather than slashing them completely.

Agatston then created his three-step program to help his patients lower their cholesterol and lose excess fat. The program focuses on eating nutrient-dense foods loaded with fiber to help stave off cravings, WebMD notes.

Next: This diet requests you cook absolutely nothing. 

5. Raw diet

Demi Moore on the red carpet

Demi Moore | Andrew Toth/Getty Images

Celebrities who use it: Woody Harrelson, Demi Moore, Gwyneth Paltrow, Megan Fox

Hate cooking your meals? If you don’t mind totally forgoing processed foods, the raw diet may be for you. Healthline explains when you’re on a raw diet, all foods you’re consuming must be unrefined, unpasteurized, not heated above 104-118 degrees, and not treated with any chemicals or pesticides. Other preparation methods, like juicing, blending, dehydrating, and soaking, are favorable. And while most folks who use the raw diet are vegans, some do consume unprocessed dairy and raw eggs for protein.

Next: This diet is quite possibly the most popular in 2018.

6. The keto diet

Kim Kardashian attends the Heavenly Bodies: Fashion & The Catholic Imagination Costume Institute Gala

Kim Kardashian | Jamie McCarthy/Getty Images

Celebrities who use it: Gwyneth Paltrow, Kim Kardashian, Lebron James, Halle Berry

It may sound like another trendy low-carb diet, but a number of celebrities swear by the quick weight-loss effects from the keto diet. Everyday Health explains in essence, the plan is simple: 75% of your food should be fats, and only 20% should be from protein, and the remaining 5% should be from carbs. After a few days, the body enters a state of ketosis, which is when it burns fat for fuel instead of carbs.

The keto diet certainly works for weight loss, but experts have raised concerns for those who follow it for long periods of time. Even so, it may help others with the management of Type 2 diabetes and epilepsy.

Next: This easy-to-follow diet is tasty, and nutritionists love it.

7. Mediterranean diet

John Goodman

John Goodman | Theo Wargo/Getty Images

Celebrities who use it: Penelope Cruz, Brooke Burke, Rachael Ray, John Goodman

This meal plan describes itself as less of a diet and more of a lifestyle change, as it’s not nearly as restrictive as many other plans. Essentially, the plan is inspired by the cuisine eaten by those native to the Mediterranean — so that includes plenty of fruits, veggies, whole grains, and healthy fats (like fish).

Brooke Burke, a huge supporter for the diet, says it helped her get into the best shape of her life. And John Goodman credits the diet for his incredible 100-pound weight loss.

Next: This diet doesn’t require much chewing.

8. Juice diet

Actress Salma Hayek attends the 75th Annual Academy Awards at the Kodak Theater on March 23, 2003 in Hollywood, California.

Salma Hayek | Kevin Winter/Getty Images

Celebrities who use it: Salma Hayek, Blake Lively, Jessica Alba

We know by now that juice “cleanses” aren’t the healthiest way to drop weight — but that hasn’t stopped certain celebrities from trying it themselves. The Sun explains this diet involves abstaining from solid food for a few days to a week in favor of consuming only juiced fruits and veggies. Unfortunately, many nutritionists find the diet to be high in sugar — and the body doesn’t need any help in “flushing out toxins,” either.

Even so, celebrities such as Salma Hayek have been incorporating have been consuming pressed juice diets from time to time for a quick slim-down, Shape notes.

Next: This diet comes totally prepackaged — any many celebs have spoken for it.

9. Jenny Craig

Mariah Carey on red carpet before holiday show

Mariah Carey | Angela Weiss/AFP/Getty Images

Celebrities who use it: Valerie Bertinelli, Jason Alexander, Mariah Carey, Queen Latifah

Jenny Craig doesn’t require any calorie counting or meal prep on the user’s part. Verywell Fit explains you’ll get a number of prepackaged entrees to eat per day when you’re on the diet, and you’re also encouraged to “volumize” them by adding more fresh produce. Those on the program will also weigh themselves once per week and can expect to lose around one to two pounds between weigh-ins.

You may remember certain celebs who lost a ton of weight on Jenny Craig, like Jason Alexander who dropped 30 pounds, or Mariah Carey who lost 70, The Daily Meal reports.

Next: Here’s another system that does all the work for you.

10. Nutrisystem

Janet Jackson attends amfAR's Cinema Against AIDS Gala during the 64th Annual Cannes Film Festival at Hotel Du Cap on May 19, 2011 in Antibes, France.

Janet Jackson | Francois Durand/Getty Images

Celebrities who use it: Janet Jackson, Melissa Joan Hart, Marie Osmond, Dan Marino

Here’s another easy system for those who want to take any guesswork out of their diet. WebMD explains Nutrisystem is a 28-day program that offers 150 prepackaged meals for breakfast, lunch, dinner, and dessert. Between meals, you can also add in fruits and veggies to keep you satiated.

Does the system work? Certain celebrities are huge fans. Janet Jackson, for example, reportedly lost 50 pounds, says Us Weekly. And Melissa Joan Hart lost 40 pounds.

Next: This nutrient-dense diet will take you back to your roots.

11. The paleo diet

Jessica Biel

Jessica Biel | Matt Winkelmeyer/Getty Images

Celebrities who use it: Jessica Biel, Aaron Rodgers, Matthew McConaughey, Jack Osbourne

The paleo diet has been picking up steam over the years thanks to its promise for a fitter physique and optimal health. Everyday Health explains the paleo diet only allows you to eat foods that were available for human consumption millions of years ago. That means all processed foods are out — but that’s not all. True paleo followers also don’t consume dairy, grains, or legumes.

Many celebrities choose this lifestyle change over any quick-and-easy diets. Spoon University notes Jessica Biel says it helps her stay slim, and Jack Osbourne lost 70 pounds thanks to the diet.

Next: Beyonce swears by this one.

12. The Master Cleanse

Beyonce Knowles attends the "Dreamgirls" premiere

Beyonce Knowles attends the Dreamgirls premiere. | Bryan Bedder/Getty Images

Celebrities who use it: Beyonce, Jared Leto

This diet’s extreme and can only be done for a short period of time — but it certainly promotes weight loss. E! News reports to start, you must create a cocktail consisting of lemon juice, cayenne pepper, maple syrup, and water — and that’s the bulk of what you’re consuming for 10 days. It was also promoted as having the ability to “detox” your system, though nutritionists have since debunked this.

Beyonce loves the Master Cleanse, however, as she used it to lose weight for Dreamgirls. 

Next: You can eat whatever you want with this diet.

13. Intermittent fasting

Jimmy Kimmel at the Oscars

Jimmy Kimmel | Mark Ralston/AFP/Getty Images

Celebrities who use it: Hugh Jackman, Jimmy Kimmel, Chris Hemsworth, Benedict Cumberbatch

Here’s another way of eating that has exponentially grown in popularity. MSN explains intermittent fasting involves periods of eating and fasting. Choosing to fast for 16 hours and eat for eight per day is common, but for those who want an even easier route, 12 hours of eating and 12 of fasting also works.

Hugh Jackman followed the 16:8 plan while training for X-Men. And Jimmy Kimmel said he lost 25 pounds with intermittent fasting.

Next: This diet is seriously controversial. 

14. The alkaline diet

Victoria Beckham in a white outfit

Victoria Beckham | Victoria Beckham via Instagram

Celebrities who use it: Jennifer Aniston, Kate Hudson, Victoria Beckham

Robert Young, Ph.D., created the controversial alkaline diet. Health explains the diet claims certain diseases are caused by high acidity in the blood — so you should aim to consume foods that will balance your pH levels. Unfortunately, Young was convicted of practicing medicine without a license. And while the idea of balancing your acid levels through diet has been debunked by many nutritionists, his plan does promote the consumption of healthful foods.

There’s been a flurry of interest in the alkaline diet since certain celebs like Victoria Beckham and Kate Hudson have spoken favorably of it.

Next: You don’t necessarily have to be vegan to get the benefits of this diet.

15. Plant-based diet

Ariana Grande

Ariana Grande | Jamie McCarthy/Getty Images

Celebrities who use it: Natalie Portman, Ariana Grande, Ellen DeGeneres, Bruce Springsteen

This is less of a diet and more of a lifestyle, which makes it one of the more sustainable options for long-term benefits. In essence, a plant-based diet means your meals are primarily composed of fruits, veggies, nuts, whole grains, and seeds. You can still eat meat when you’re plant-based, but it should be viewed as more of a side dish rather than the main component of your meals.

Many celebrities are plant-based, Nature’s Path reminds us. Ariana Grande eats plenty of daikons, lotus, and adzuki beans, and Natalie Portman swears by avocado toast for breakfast and vegan Mexican food for lunch.

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