Does Weight Watchers work

What Weight Watchers is

Short answer: yes for many people, but the results are modest. In trials, people on Weight Watchers lost a little more weight at 1 year than people who got basic advice, and those who stuck with it did best.

Weight Watchers, now branded WW, is a commercial weight-loss program. It uses a points system that steers you toward filling, lower-calorie foods, plus tracking and group or coaching support. Newer plans also offer clinical services. We're not affiliated with WW.

What the research shows

A 2015 review in the Annals of Internal Medicine compared commercial programs. At 12 months, people on Weight Watchers lost about 2.6 percent more weight than people in control groups who got education or brief advice.

That's modest but meaningful. Losing 5 percent of body weight can improve blood pressure, blood sugar and cholesterol for many people.

Why it works for some people

• Points make portion choices simpler than counting every calorie.
• Weekly check-ins add accountability.
• Group support keeps people going longer.

What it costs

WW has several plan levels and runs frequent promotions, so prices change. Check their site for current pricing. Compare it with what you'd pay for a free tracking app plus your own plan built with the TDEE calculator.

How it compares with other approaches

Results come from different studies and populations, so compare with care. Medicine costs are in the GLP-1 cost index.

Questions to ask before joining

• Will I use the tracking and check-ins every week?
• Do I prefer group support or working alone?
• What happens to my plan if I stop paying?
• Does my employer or insurer offer a discount or a covered program?

More studies worth knowing

In a UK trial published in The Lancet in 2011, about 770 adults were referred by their doctors either to Weight Watchers or to standard care. After 12 months, the Weight Watchers group lost about twice as much weight on average, though both groups' averages were a few kilograms.

As in most diet research, many people dropped out over time, and those who stayed engaged lost the most. Some trials were funded by the company, which is worth keeping in mind.

A worked example

Picture someone who weighs 200 pounds. The 2.6 percent average edge from the Annals review works out to about 5 extra pounds lost at 1 year, compared with basic advice alone.

A 5 percent loss for this person is 10 pounds, the point where many people see better blood pressure and blood sugar. Some members reach that and some don't. See what that target takes on the lose 10 pounds page.

Who may want a different route

• If you have a history of disordered eating, points tracking may not feel healthy. A dietitian or therapist can help you find a gentler approach.
• If you take insulin or other diabetes medicines, talk to your clinician before a big diet change, since doses may need adjusting.
• If your BMI is 30 or more, or 27 or more with a weight-related condition, you may qualify for prescription weight-loss medicine. Check your number with the BMI calculator.

Making any program stick

Whatever you choose, the habits that help most are the same: weigh in once a week, plan meals ahead, keep protein up and have a plan for weekends and holidays. Read how to stick to a diet for more ideas.

What happens when you stop

As with most diets, weight often creeps back after people stop a program, especially if habits fade with the membership. Partial regain over 2 or more years is common in long-term studies of commercial programs.

Plan ahead: keep weighing in weekly, keep the meal patterns that worked and track your trend in the weigh-in tracker.

Is it right for you

It may suit you if you like structure and community. If you'd rather do it yourself, our free calculators give you the same core numbers: calories, protein and a realistic timeline. If you've tried programs before without lasting results, a clinician can talk through medical options too.