Comparison Really Is the Thief of Joy
You and your friend started GLP-1 medications around the same time. She has lost 30 pounds. You have lost 12. You are on the same medication, the same dose. You are doing everything "right." So what gives?
New research is providing an answer — and it has nothing to do with effort, willpower, or doing something wrong. It is your genes.
What the Science Found
In April 2026, the 23andMe Research Institute published a study of nearly 28,000 people taking GLP-1 weight-loss medications. They found that a specific genetic variant in the GLP1R gene — the gene that encodes the receptor these drugs target — was significantly associated with how much weight people lost.
Separately, scientists identified variants carried by roughly 10% of the population that may make people less responsive to GLP-1 medications. In other words: some people's bodies are literally wired to respond more or less to these drugs.
What this does NOT mean:
This does not mean you should get a genetic test before starting. The vast majority of patients respond to GLP-1 medications regardless of genotype. If you are losing weight more slowly than expected, genetics may be part of the reason — but it is not the whole picture, and there are clinical strategies to optimize your response.
What Actually Helps If You Are a Slower Responder
- Make sure you are at the full therapeutic dose. Many people who feel like non-responders have not yet completed titration.
- Ask about switching medications. A patient who responds modestly to semaglutide may respond much better to tirzepatide, or vice versa. The mechanisms are different enough that switching is a legitimate clinical strategy.
- Consider the new higher dose. Wegovy HD 7.2mg is specifically designed for patients who tolerated 2.4mg but need more.
- Celebrate your own progress. A 10% weight loss improves blood pressure, blood sugar, inflammation, and joint pain regardless of what anyone else achieved. Your body's response is yours — and it matters.
Every Body Responds Differently
A good provider will work with YOUR body, not a one-size-fits-all protocol. Compare personalized care options.
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