Why Weight Loss Medications Don’t Always Work as Expected
Medications like GLP-1s have been getting a lot of attention for good reason. In clinical trials, people can lose up to 22% of their body weight.
However, once these medications are used in real life, the results are usually less impressive. Most people lose closer to 9% after a year. Some stop the medication early. Others struggle with side effects, cost, or simply not knowing what to do beyond taking the drug.
So the question is: what is missing?
A new study published in the International Journal of Obesity suggests the answer isn’t a stronger drug, it’s better support.
What happens outside the clinic
The study, conducted by NOVI Health and in collaboration with the National University of Singapore (NUS) Saw Swee Hock School of Public Health, followed 708 adults in a structured weight care program by NOVI Health, Optimum Plus. Instead of relying on medication alone, the program combined GLP-1 medication, ongoing digital coaching via an app (NOVI Health App), and personalized lifestyle guidance (nutrition, activity, habits).
The results were closer to what you’d expect in a clinical trial and significantly above typical real-world GLP-1 outcomes.
12.7% weight loss at 12 months
14.7% weight loss at 18 months
Medication is just part of the puzzle
One of the clearest takeaways is this: the medication helps, but it is not doing all the work.
People who were more engaged (those who are conscientiously logging meals, checking in with coaches, and following guidance) consistently did better.
Compared to those who were less engaged, they saw:
Around 2% more weight loss (which adds up over time)
Better improvements in BMI
Up to 2.9 mmHg additional systolic blood pressure reduction
That might sound small, but in weight loss, those differences matter. Over months, they can be the difference between plateauing early and continuing to see progress.
Essentially, while medication reduces your appetite, the coaching helps you improve your metabolic health that supports a healthy, sustainable weight loss.
Why results can vary from person to person
Another interesting finding: not everyone responds the same way.
The study included a diverse group of participants across Asian and non-Asian backgrounds. It found that some groups (like East Asian participants or those with higher blood sugar levels) tended to lose slightly less weight, while others saw stronger results
This highlights something important: there’s no one-size-fits-all approach to weight loss, especially in Asia, where most clinical trials haven’t historically been focused.
What works for one person may not work the same way for another, which makes personalized support even more important.
It’s not just about losing weight
While the headline number is weight loss, the benefits went beyond the scale. Participants also saw improvements in key health markers:
Lower blood pressure
Reduced body fat
Better blood sugar control
Healthier waist-to-hip ratios
These are the kinds of changes that lower the risk of conditions like diabetes and heart disease, not just help you fit into smaller clothes.
The takeaway
Weight loss medications can be powerful, but they’re not magic bullets.
If you take the drug without changing habits or getting support, results may fall short. That’s what we’ve been seeing in the real world.
But when you combine medication with consistent guidance, accountability, and small, sustainable changes, the results can be very different.
Closer to what clinical trials promise, and more importantly, closer to what people are actually hoping for.