How to Choose a Weight-Loss Program: 12 Questions to Ask (Printable Checklist)

Key takeaways

• The NIDDK says experts recommend an initial weight-loss goal of 5% to 10% of starting weight within six months.^[1]
• In the USPSTF review, most effective behavioral programs lasted one to two years and had 12 or more sessions in the first year.^[2]
• People in behavioral programs lost about 2.4 kg (5.3 lb) more than control groups at 12 to 18 months in the USPSTF's pooled trials.^[2]
• The FTC lists seven weight-loss claims that can't be true, including loss without diet or exercise and loss from products worn on the body.^[3]

In short: A good weight-loss program can show published evidence that it works, tells you the full cost and how to cancel before you pay, gives you regular contact for months (the programs that worked in research usually had 12 or more sessions in the first year), sets a realistic goal of about 5% to 10% of your weight in six months, and has a plan for keeping weight off. Walk away from promises like “lose 30 pounds in 30 days” or “no diet or exercise needed”. Below are 12 questions to ask any program, based on guidance from the NIH, the U.S. Preventive Services Task Force and the Federal Trade Commission, with a checklist you can print.

This page helps you judge a program; it does not pick one for you. For programs ranked by their published evidence, see the best non-prescription weight-loss programs, and for every type of program, including medical ones, start at our programs hub. If you have health conditions or take medicines, talk with your clinician before you join anything.

What a weight-loss program should include

The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) describes a weight-loss program as “more than a book or app”: a formal program with ongoing guidance and support. It should include a healthy, reduced-calorie eating plan, a plan for more physical activity when appropriate, guidance and support for building habits, and a plan for keeping the weight off. The U.S. Preventive Services Task Force (USPSTF) recommends that clinicians offer or refer adults with a BMI of 30 or higher to intensive programs with several of these parts. In the programs it reviewed, most lasted one to two years, most had 12 or more sessions in the first year, and they focused on problem solving, self-monitoring of weight, peer support and preventing relapse. Our BMI calculator gives your number, but any adult who wants support can use these questions.

The 12 questions, and why each one matters

1. “Do studies show your program works, and can I see them?”

The NIDDK puts this first: has the program been formally studied, were the results published in a scientific journal, and can you have a copy? A published, independent randomized trial is the strongest answer. Company surveys of their own members, or before-and-after stories, are much weaker. For example, WeightWatchers has several independent year-long trials, while the best-known published data on Noom are observational; our WW vs Noom comparison shows what that difference looks like in practice.

2. “What is the total cost, from beginning to end?”

Ask for the full price, then ask what is not included. The NIDDK lists the usual extras: membership fees, weekly visits, food, meal replacements or supplements, medical tests, counseling, maintenance follow-up and even online chat access. A low first-month offer can hide a much higher regular price; WeightWatchers’ Med+ tier, for instance, was $25 for the first month and then $74 or $84 a month on 2026-10-06, with medication billed separately.

3. “How long is the commitment, and how do I cancel?”

Many programs renew automatically. On 2026-10-06, WeightWatchers’ lowest Core price required a 12-month plan that renews for another 12 months unless canceled, and every Noom plan was billed up front and auto-renewed. Some meal programs charge back a first-order discount if you cancel early: Nutrisystem’s June 2026 terms put that at $125. Before you pay, write down the renewal date, how to cancel (online, by phone or both) and whether any part is refundable. Our Nutrisystem, WeightWatchers and Noom pages summarize each company’s terms.

4. “How often will I have contact with a person, and for how long?”

Regular contact is one of the clearest predictors of success. Most programs that worked in the USPSTF review had 12 or more sessions in the first year, and in England’s WRAP trial a year of WeightWatchers led to about 2 kg more loss than 12 weeks of the same program. In the CDC’s National Diabetes Prevention Program, every extra session attended was linked with 0.3% more weight lost. For an online program, the NIDDK suggests looking for weekly sessions tailored to your goals and feedback from a trained person.

3.26 kgBrief advice only

4.75 kg12 weeks of a group program

6.76 kg52 weeks of the same program

More months of support, more weight lost: the WRAP trial at one year

Item	Value
Brief advice only	3.26 kg
12 weeks of a group program	4.75 kg
52 weeks of the same program	6.76 kg

The program was WeightWatchers, offered free through primary care. 1 kg is about 2.2 lb.

Source: Ahern AL et al., Lancet 2017 (WRAP, 1,267 adults in England) (checked on October 6, 2026)

5. “Who runs the program, and what training do they have?”

Ask whether a doctor or other licensed health professional runs or oversees the program, whether you can speak with one if you need to, and whether the team includes a registered dietitian, a mental health counselor or an exercise physiologist. “Coach” can mean anything from a licensed dietitian to a former customer, so ask what certification and training the coaches have and how long they have worked with the program.

6. “What goal will you help me set?”

The NIDDK says experts recommend an initial goal of 5% to 10% of your starting weight within six months; for someone who weighs 200 pounds, that is about 10 to 20 pounds. The USPSTF notes that the FDA considers a 5% loss clinically important, because it can improve blood pressure, blood sugar and other health measures. A program that promises much more, much faster, is selling hope rather than evidence.

Starting weight 150 lb7.5 lb–15 lb

Starting weight 200 lb10 lb–20 lb

Starting weight 250 lb12.5 lb–25 lb

Starting weight 300 lb15 lb–30 lb

0 lb15 lb30 lb

A realistic 6-month goal (5% to 10% of starting weight)

Item	Low	High
Starting weight 150 lb	7.5 lb	15 lb
Starting weight 200 lb	10 lb	20 lb
Starting weight 250 lb	12.5 lb	25 lb
Starting weight 300 lb	15 lb	30 lb

Our arithmetic from the NIDDK's 5% to 10% guidance. Your own goal is best set with your clinician.

Source: NIDDK, Choosing a Safe and Successful Weight-loss Program (checked on October 6, 2026)

7. “Do I have to buy special meals, shakes or supplements?”

If so, ask what they cost per day or week, whether you can adjust them for your culture, likes and allergies, and what happens when you stop buying them. Meal-based programs can work well in the first months, but you will eventually need to cook and shop for yourself. Be especially careful with programs that sell their own supplements: supplements are not FDA approved for weight loss, and our supplements guide explains what the evidence says.

8. “Is there a physical activity plan that fits my body and schedule?”

A good program adapts activity to different abilities and offers options you can do at home, at work or while traveling, without requiring a gym. The NIDDK notes that some people work up to 150 minutes or more of aerobic activity a week, and that activity has health benefits beyond the scale. Our exercise hub and walking guide show gentle ways to start.

9. “How will you help me track my eating, activity and weight?”

The NIDDK lists support for monitoring eating, drinking, sleep and activity every day and checking your weight every week as a core feature, along with regular feedback. Self-monitoring of weight was also part of most effective programs in the USPSTF review. The tool matters less than the habit: an app, a paper log or a simple scale all work. If you want an app, our best weight-loss apps compares them.

10. “What is the plan for keeping the weight off, and how long does it last?”

Maintenance is where most programs fall short. Ask what the maintenance phase includes, how long it lasts and what it costs. The NIDDK’s maintenance strategies include an eating plan for your new weight, 150 to 300 minutes or more of activity a week and weighing yourself at least once a week. Our habits of people who keep weight off and the full keeping weight off guide go further.

11. “What results do typical members get, and how long do they keep them?”

Ask for the average result, not the best one, and how long people keep it off. In the USPSTF’s pooled trials, people in behavioral programs lost about 2.4 kg (5.3 lb) more than control groups at 12 to 18 months, with wide variation. Compare any claim against that. The FTC’s Gut Check guide lists seven claims that can’t be true, including weight loss of two pounds or more a week for a month without dieting or exercise, permanent loss after you stop the product, and weight loss from something you wear or rub on your skin.

12. “What are the risks, and will you work with my own doctor?”

The NIDDK suggests asking whether the program could cause health problems, whether there is ongoing follow-up for safety, and whether staff will work with your own clinician. If the program can prescribe, ask which medicines, whether they are FDA approved, and whether compounded versions are involved: compounded GLP-1s are not FDA approved, as our compounded GLP-1 guide explains. Our telehealth programs comparison shows what prescribing services include, and the telehealth weight-loss guide lists what to check before paying any online prescriber.

Red flags: claims to walk away from

These warning signs come straight from the NIDDK’s list of programs to avoid and the FTC’s Gut Check guide. A promise to remove fat from one area is a particular giveaway: no diet, exercise or program can choose where you lose fat. If a product says it burns fat on its own, our guide to fat burners explains why the evidence doesn’t hold up.

Commercial or medical program?

The same 12 questions work for both, but the answers differ. Commercial programs focus on food, habits and support. Medical programs are run or supervised by licensed clinicians, can treat weight-related conditions and may add prescription medicine. If you have diabetes, sleep apnea, high blood pressure or a BMI where medicines or surgery are generally considered, a medical weight-loss program may be worth asking about. Our medical vs commercial programs page compares the two routes, and find a provider helps you locate clinicians who treat obesity.

Printable checklist

Print this page or copy the list into your phone’s notes. Take it to a sign-up call or a clinic visit and write the answers next to each item.

Want to see how real programs answer these questions? Our ranked list of non-prescription programs applies them to seven programs, and our How we choose method explains how we judge evidence without letting commissions affect the order.

Questions to ask a professional

• How is my weight affecting my health, and would losing 5% to 10% help?
• Is a commercial program enough, or would a medical program be safer for me?
• Are there programs my insurance or employer covers?
• Would a program's eating plan or meal replacements interact with my medicines or conditions?
• Can you share my records with a program clinician if I join one?

Frequently asked questions

What should I look for in a weight-loss program?

Published evidence, a clear total cost and cancellation terms, regular contact for months, a realistic goal (about 5% to 10% in six months), a healthy reduced-calorie eating plan, an activity plan, tracking support and a plan for keeping weight off.

How much weight should a good program help me lose?

The NIDDK says a realistic first goal is 5% to 10% of your starting weight within six months, such as 10 to 20 pounds for someone who weighs 200 pounds. The FDA considers 5% clinically important.

What are the warning signs of a bad weight-loss program?

Promises of weight loss without diet or exercise, eating all you want, very fast loss such as 30 pounds in 30 days, spot fat loss, permanent results after you stop, tiny print and too-good-to-be-true before-and-after photos.

Are online weight-loss programs as good as in-person ones?

The NIDDK says some virtual programs may work if they include weekly sessions, a trained professional, tracking and regular feedback, but long-term research on them is still limited.

Should I choose a commercial or a medical program?

It depends on your health. If you have weight-related conditions or a BMI where medicines or surgery are generally considered, ask your clinician about a medical program. The same 12 questions apply to both.

References

1. Choosing a Safe & Successful Weight-loss Program. National Institute of Diabetes and Digestive and Kidney Diseases (NIH). (accessed October 7, 2026) Government page
2. Weight Loss to Prevent Obesity-Related Morbidity and Mortality in Adults: Behavioral Interventions. U.S. Preventive Services Task Force, 2018. (accessed October 7, 2026) Guideline
3. Gut Check: A Reference Guide for Media on Spotting False Weight Loss Claims. Federal Trade Commission, 2014. (accessed October 7, 2026) Government page
4. Ahern AL, Wheeler GM, Aveyard P, et al.. Extended and standard duration weight-loss programme referrals for adults in primary care (WRAP): a randomised controlled trial. The Lancet, 2017. doi:10.1016/S0140-6736(17)30647-5 · PMID 28478041 (accessed October 6, 2026) Randomized trial
5. Ely EK, Gruss SM, Luman ET, et al.. A National Effort to Prevent Type 2 Diabetes: Participant-Level Evaluation of CDC’s National Diabetes Prevention Program. Diabetes Care, 2017. doi:10.2337/dc16-2099 · PMID 28500215 (accessed October 7, 2026) Other
6. WeightWatchers plans and pricing. WW International, Inc.. (accessed October 6, 2026) Other
7. Core+. WW International, Inc.. (accessed October 6, 2026) Other
8. How much does Noom Weight cost in 2026?. Noom, Inc., 2026. (accessed October 7, 2026) Other
9. Nutrisystem Program page (capture, 2026-06-12). Nutrisystem, LLC, via Internet Archive, 2026. (accessed October 6, 2026) Other
10. FDA’s concerns with unapproved GLP-1 drugs used for weight loss. U.S. Food and Drug Administration, 2026. (accessed October 7, 2026) Government page

Facts checked on October 6, 2026

Educational information, not medical advice. Talk with a qualified healthcare professional about your own situation. In an emergency call 911.