This Is the Worst Weight Loss Program in America, According to Users

Don't let bad diet plans prevent you from achieving your goals.

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About half of Americans are trying to lose weight at any given time, according to a recent Gallup poll. To meet their goals, many turn to healthy eating plans, exercise regimens, apps, and other programs for guidance. But there are lots and lots of weight loss programs out there, and figuring out which one is right for you can be a challenge. That's why Best Life set out to help, and we’ve uncovered the ones you need to avoid, as well—yes, we've found the worst weight loss program in America.

To find out which weight loss program may offer the results you’re looking for and which you should avoid at all costs, we first used ConsumerAffairs’ 2021 Best Weight Loss Programs report, which reviewed several programs that were rated by more than 9,000 consumers on a five-star scale. Then, we factored in the overall score from the 2021 U.S. News & World Report ranking of Best Diets Overall, where each diet was reviewed by a group of health experts and given a score out of five.

Next, we looked into which of the weight loss programs also offered an app. Research published in the Annals of Internal Medicine found that smartphone apps may be helpful to some people on their weight loss journey. So, we factored in ratings on both the Apple App Store and Google Play store, as well as the number of stars each received on Trustpilot, all of which were also on five-point scales.

Finally, we gave each metric a weighted value before plugging them into our exclusive algorithm to see how each weight loss program scored on our 100-point scale Dissatisfaction Index—the higher the score, the worse the program, according to those who've used them. If you’re making an effort to drop a few extra pounds, read on to discover the worst weight loss program in America to make sure you're set up for success. And if joining a fitness center is part of your plan, do your research and check out The Worst Gym in America, According to Members.

Editor's note: "N/A" indicates that data was not available for that particular metric. We adjusted the algorithm to ensure that each brand was scored fairly and accurately.

18
Chef V

Chef V logo
Chef V

ConsumerAffairs ranking: 5.00

U.S. News & World Report score: N/A

Apple App Store rating: N/A

Google Play rating: N/A

Trustpilot stars: N/A

Dissatisfaction Index Score: 0.00

17
Personal Trainer Food

Personal Trainer Food
Personal Trainer Food

ConsumerAffairs ranking: 4.20

U.S. News & World Report score: N/A

Apple App Store rating: N/A

Google Play rating: N/A

Trustpilot stars: 4.50

Dissatisfaction Index Score: 21.67

And if you're like most Americans who can't live without their morning cup of joe, check out The Most Hated Coffee Chain in America.

16
Aaptiv

Aaptiv app
Tada Images / Shutterstock.com

ConsumerAffairs ranking: N/A

U.S. News & World Report score: N/A

Apple App Store rating: 4.70

Google Play rating: 3.80

Trustpilot stars: 4.00

Dissatisfaction Index Score: 27.75

15
Noom

Noom weight loss app
Postmodern Studio / Shutterstock.com

ConsumerAffairs ranking: 2.50

U.S. News & World Report score: 3.50

Apple App Store rating: 4.70

Google Play rating: 4.40

Trustpilot stars: 4.40

Dissatisfaction Index Score: 36.67

14
WW (formerly Weight Watchers)

Weight Watchers Studio store front
Jonathan Weiss / Shutterstock.com

ConsumerAffairs ranking: 3.50

U.S. News & World Report score: 3.90

Apple App Store rating: 4.80

Google Play rating: 4.40

Trustpilot stars: 2.10

Dissatisfaction Index Score: 42.00

And to avoid another frustrating consumer experience, find out why This Online Store Has the Worst Customer Service in America.

13
The Mayo Clinic Diet

MINNEAPOLIS, MN/USA - MAY 23, 2016: Mayo Clinic entrance and sign. The Mayo Clinic is a nonprofit medical practice and medical research group based in Rochester, Minnesota. - Image
Ken Wolter / Shutterstock.com

ConsumerAffairs ranking: N/A

U.S. News & World Report score: 3.80

Apple App Store rating: 3.50

Google Play rating: 3.90

Trustpilot stars: N/A

Dissatisfaction Index Score: 42.18

12
Herbalife

Herbalife store exterior
Brett Hondow / Shutterstock.com

ConsumerAffairs ranking: 2.50

U.S. News & World Report score: N/A

Apple App Store rating: 4.00

Google Play rating: 3.90

Trustpilot stars: 4.20

Dissatisfaction Index Score: 45.00

11
Jenny Craig

Jenny Craig exterior
Ken Wolter / Shutterstock.com

ConsumerAffairs ranking: 3.90

U.S. News & World Report score: 3.50

Apple App Store rating: 3.40

Google Play rating: 3.60

Trustpilot stars: 3.20

Dissatisfaction Index Score: 49.33

10
South Beach Diet

South Beach Diet
Shutterstock

ConsumerAffairs ranking: N/A

U.S. News & World Report score: 3.00

Apple App Store rating: 4.50

Google Play rating: 2.80

Trustpilot stars: 3.70

Dissatisfaction Index Score: 50.00

And for more exclusive rankings sent to your inbox, sign up for our daily newsletter.

10
Diet-to-Go

Diet-to-Go Logo
Diet-to-go via PRNewswire

ConsumerAffairs ranking: 3.80

U.S. News & World Report score: N/A

Apple App Store rating: N/A

Google Play rating: N/A

Trustpilot stars: 3.20

Dissatisfaction Index Score: 50.00

8
BistroMD

BistroMD logo
BistroMD LLC

ConsumerAffairs ranking: 2.90

U.S. News & World Report score: N/A

Apple App Store rating: N/A

Google Play rating: N/A

Trustpilot stars: 3.90

Dissatisfaction Index Score: 53.33

8
Medifast

Medifast office
Kristoffer Tripplaar / Alamy Stock Photo

ConsumerAffairs ranking: 3.40

U.S. News & World Report score: N/A

Apple App Store rating: N/A

Google Play rating: N/A

Trustpilot stars: N/A

Dissatisfaction Index Score: 53.33

6
Dukan Diet

Dukan Diet app
igor moskalenko / Shutterstock.com

ConsumerAffairs ranking: N/A

U.S. News & World Report score: 1.80

Apple App Store rating: 4.60

Google Play rating: 2.80

Trustpilot stars: 3.70

Dissatisfaction Index Score: 59.17

5
SlimFast

SlimFast drink products on shelf
Roman Tiraspolsky / Shutterstock.com

ConsumerAffairs ranking: 2.90

U.S. News & World Report score: 2.80

Apple App Store rating: 3.00

Google Play rating: 3.70

Trustpilot stars: 3.20

Dissatisfaction Index Score: 62.67

4
LA Weight Loss Centers

LA Weight Loss Centers table at an expo
Jeffrey Isaac Greenberg 11+ / Alamy Stock Photo

ConsumerAffairs ranking: 3.10

U.S. News & World Report score: N/A

Apple App Store rating: 2.90

Google Play rating: N/A

Trustpilot stars: N/A

Dissatisfaction Index Score: 66.67

3
Nutrisystem

Nutrisystem weight loss kit
melissamn / Shutterstock.com

ConsumerAffairs ranking: 2.20

U.S. News & World Report score: 3.00

Apple App Store rating: 4.60

Google Play rating: 3.20

Trustpilot stars: 1.60

Dissatisfaction Index Score: 69.33

2
Optifast

Photo credit: © 2020 Nestlé

ConsumerAffairs ranking: N/A

U.S. News & World Report score: N/A

Apple App Store rating: 2.50

Google Play rating: 1.60

Trustpilot stars: 3.40

Dissatisfaction Index Score: 83.25

1
Optavia

OPTAVIA Logo
Medifast, Inc.

ConsumerAffairs ranking: N/A

U.S. News & World Report score: 2.60

Apple App Store rating: N/A

Google Play rating: 1.40

Trustpilot stars: N/A

Dissatisfaction Index Score: 100.00

And for more on where weight loss in on Americans’ minds, find out The Most Obese State in the Country.

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