Does behavioral coaching actually improve weight loss?

People rely on coaches for all sorts of things: sports, public speaking, their careers. But here’s another area you can enlist their help with: losing weight. Behavioral coaching can help you achieve better results, work around challenges, and build healthy habits you can sustain for the long haul. And this holds true for those taking GLP-1s as well. In fact, expert help may be just as important to your health and your long-term success when you’re taking a GLP-1, as coaches can help you manage side effects and learn healthy habits that could help you maintain your weight loss. Here’s what the research suggests about why coaching can make all the difference.

Key takeaways 

• Decades of research on people who are not taking a weight-loss medication show structured behavioral coaching and community help people lose more weight, and keep more of it off, than going it alone.

• Coaching works by helping you build lasting habits — using tools like cognitive behavioral therapy, positive psychology, and motivational techniques.

• With GLP-1s, coaching still matters: Pairing the medication with behavior support could result in more weight loss than medication alone (and helps you learn healthy habits so you can hold on to your weight loss if you choose to go off the medication).

• Weight Watchers is one of the most-researched behavior change programs in the world, backed by more than 190 studies showing it works.

For people not prescribed a GLP-1, overwhelming evidence shows that adding in structured behavioral support helps them lose more weight and keep it off. And in clinical trials of GLP-1 weight loss medications, participants that are prescribed the meds in combination with a “lifestyle intervention,” in which they receive regular diet and exercise counseling sessions may achieve greater weight loss than those who do not. That’s because at its heart, lasting weight loss depends as much on developing sustainable habits as it does your biology — and a treatment plan that’s DIY or only includes medication is missing half of what makes it work. “A good medically supervised weight loss program should include nutritional and physical activity guidance as well as behavioral support,” says Dr. Eleanor Yusupov, D.O., assistant professor at New York Institute of Technology College of Osteopathic Medicine. The behavioral piece is what helps you turn knowledge of what you “should” do into practical habits you can actually stick with over time.

Behavioral coaching is the human element of weight loss, providing support to make a “healthy lifestyle” work in your real life. Coaches are trained to help people break their goals into realistic steps, learn specific skills, and troubleshoot when something gets in the way. “Rather than prescribing a rigid plan for weight loss, behavioral coaching helps close the gap between intentions and actions by applying behavior-change techniques to an individual’s unique circumstances and values, so they can build habits that promote weight health over time,” says Lindsey Parnarouskis, Ph.D., manager of clinical research and behavioral science at Weight Watchers.

It’s not just cheerleading: Weight Watchers coaches are trained in more than 100 science-backed behavior-change tools drawn from cognitive behavioral therapy,  positive psychology, and motivational techniques. These can include methods for setting specific goals, self-monitoring, planning ahead, identifying obstacles, creating accountability, and building routines that make healthy choices easier.

Reams of research show that behavioral weight-loss programs work, and that taking advantage of expert coaching and social support yields even better results than trying to lose weight on your own. For example, a recent systematic review and meta-analysis of 62 studies found that participants who received dietitian-delivered support were more than twice as likely to lose at least 5% of their body weight — an amount known to be linked with real health benefits. 

One area a coach can help with is ensuring you settle into a more sustainable eating pattern rather than going all-or-nothing. “Patients typically eat a very calorie-restricted diet when trying to lose weight on their own,” says Yusupov. But when you overly restrict your calories, the body thinks you’re starving and tries to conserve energy, making weight loss slow down. By following a coach’s advice and creating habits you can stick with for the long-run, you’ll make weight loss healthier and more sustainable.

More than 190 studies backing the Weight Watchers program make it clear: The more you tap into behavioral coaching and community, the more weight you could lose. In one randomized controlled trial, Weight Watchers members who attended three or more Workshops per month lost more than twice as much weight as those who attended only one.*

If behavioral coaching can help you stick with healthier eating choices, why bother with it when you’re taking a GLP-1? Doesn’t the medication take care of that for you? 

Not exactly. GLP-1 medications can reduce appetite, increase feelings of fullness, and slow the rate at which food leaves your stomach. This makes it easier to eat less — not necessarily eat better. And when your appetite is much lower, what you eat matters even more. “GLP-1s are powerful tools for weight loss,” says Parnarouskis. “However, it is just as important to maintain healthy habits while taking GLP-1s to ensure adequate nutrition and to maintain muscle mass and function.” The medication won’t help you get stronger or prevent nutrient deficiencies — prioritizing exercise and a healthy diet with the support of a coach will. 

A 2025 review of the research on diet during GLP-1 use concluded that behavioral support tailored to the physical and mental demands of the medication is essential for helping people cope with food-related challenges (like getting enough protein and avoiding malnutrition), stick with the treatment, and achieve long-term success with it. 

Study after study on GLP-1 patients show that the more you meet with a health coach, the more weight you might lose. In one 2026 real-world analysis of more than 106,000 adults taking a GLP-1, those who were more digitally engaged with lifestyle coaching sessions, weight tracking, and app use lost 21.5% of their body weight over about 11 months, compared with 17% among non-engaged users.

Coaches, like those at Weight Watchers, are real human beings who get exactly what you’re experiencing, and can light a clear path through it. Working with a coach can help you figure out how to form new habits so that healthy choices become more automatic, manage food noise and emotional eating, and work more movement into your day in a realistic way. “At Weight Watchers, coaches celebrate wins along the way, provide encouragement, and help troubleshoot when challenges inevitably arise,” says Parnarouskis. “They also help connect members with others navigating similar challenges, and with licensed professionals who can provide more specific expertise if needed, such as registered dietitians.”

And if you’re taking a GLP-1, coaches can help you:

• Set personalized goals

• Hit GLP-1-specific micro- and macronutrient targets (like protein and fiber)

• Find foods you can tolerate on low-appetite days

• Manage side effects with personalized eating strategies

• Provide a sounding board for unexpected obstacles or concerns

• Create a plan to help resolve weight-loss plateaus 

• Apply specific behavior-change techniques to your life and situation

Scientists and institutions like the World Health Organization make one thing very clear: GLP-1s are an add-on or aid to behavioral weight loss programs — not the whole plan. This is because the medication alone is not enough to ensure long-term success, especially if you go off the medication. Taking Wegovy, Zepbound, or Foundayo (orforglipron) may change your appetite biology while you’re on them, but the routines you build around food, movement, and self-monitoring can be yours forever. 

This is where behavioral coaching comes in. It can help cement new food and exercise habits that are realistic enough to last even if you stop taking the medication. Among Weight Watchers Med+ members surveyed, 80% say they’re learning sustainable eating behaviors they expect to rely on after their GLP-1 treatment is complete.**

Expert support before and after tapering your meds can give you a leg up toward keeping weight off. “Behavioral coaching helps instill the underlying habits that promote long-term weight health whether on or off a GLP-1,” says Parnarouskis. “Feeling increased appetite or food noise after going off a GLP-1 can be discouraging; coaching can help individuals prepare for those changes, recognize their biological underpinnings, and provide strategies to manage that transition.”

Behavioral support is the foundation of all that Weight Watchers offers. All Weight Watchers Core+ and Med+ members get access to coaches trained in behavioral science, unlimited virtual and in-person Workshops, an app for tracking food, activity, and progress, plus 12,000+ recipes, on-demand strength-training videos, and the Connect community platform where you can interact with fellow members for social support. With those people and tools behind you, you’ll feel more empowered than ever to make healthy behavior changes you can stick with for the rest of your life.

Behavioral coaching isn’t just cheerleading, but rather a support system for building habits that you can keep using for the long term. Research has confirmed time and again that structured behavioral support improves weight loss. Coaches can offer concrete strategies for optimizing your nutrition, navigating challenges, and making healthy choices work in your actual life. And for people taking a GLP-1, coaching adds something extra: guidance and support through the intense physical and mental shifts the medication brings about. That’s the Weight Watchers approach: science-backed behavior tools, real human support, community, and — when appropriate — medication, all working together toward sustainable change.