New Study Reveals Effects of Stopping GLP-1 Weight-Loss Medications
A recent study has shown that stopping the use of GLP-1 medications for weight loss can lead to more weight regain than previously understood. Researchers found that discontinuing these drugs not only causes individuals to regain weight but also reverses improvements in heart and metabolic health, such as cholesterol levels and blood pressure.
Conducted by researchers at the University of Oxford, this study analyzed 37 separate studies involving over 9,000 participants, who had undergone an average of 39 weeks of treatment. The findings suggest that, when patients cease treatment, they tend to regain nearly 0.9 pounds each month. Estimates indicate that after stopping medication, people’s weight and risk levels for conditions like diabetes and heart disease could return to pre-treatment figures in under two years.
Interestingly, the study noted that weight regain occurs almost four times faster compared to the effects of changing a diet or exercise routine, regardless of how much weight was initially lost.
Despite the initial success of these drugs for weight loss, the researchers highlighted concerns about their long-term effectiveness for maintaining that loss. They pointed out that only a handful of studies examined newer GLP-1 medications with follow-ups up to one year after treatment cessation, which may limit the findings. However, additional methods of analysis produced similar results.
Dr. Qi Sun, an associate professor of medicine at Brigham and Women’s Hospital and Harvard Medical School, remarked that these findings challenge the notion that GLP-1 medications are a perfect solution for obesity. He emphasized the importance of healthy eating and lifestyle habits as the foundation for treating obesity, suggesting that medications should complement these efforts, not replace them.
Reasons for Discontinuation
Recent trends indicate that an increasing number of older Americans are opting to stop their GLP-1 medications for various reasons. A study released in 2025 revealed that almost 47% of participants with type 2 diabetes and 65% without diabetes stopped their prescribed medications within a year.
Common concerns among users include high costs, muscle loss, dehydration, and side effects like nausea, vomiting, and headaches. Experts note that older individuals are particularly sensitive to these gastrointestinal issues, underscoring the need for careful monitoring by healthcare professionals familiar with medical weight management.
Dr. Sue Decotiis, a weight-loss specialist in New York City, highlighted that a personalized dosing plan can help patients minimize side effects and enhance their chances of long-term fat loss, which is how GLP-1 medications are designed to work effectively.
Many patients might have continued using their GLP-1 drugs if they had received the right personalized care, potentially reducing weight gain and promoting overall health benefits.
