Fact or Fiction
Confused by what you’ve read about weight loss medication? You’re not alone. Every day, new claims about Mounjaro, Wegovy and other GLP-1 injections spread across forums, social media, and even in conversations between patients. Some are accurate, but many are myths, half-truths, or taken out of context.
At Weight Loss Fact Checker, we collect the most common questions patients are asking — about side effects, symptoms, results, and safety — and we put them under the microscope. Each claim is labelled as Fact or Fiction with a clear, evidence-based explanation.
This section is the main hub of our website and is updated regularly.
You’ll find answers to real patient concerns.
Every answer is backed by scientific research, clinical guidance, and medical expertise, so you can be confident you’re reading facts — not hype.
The price of Mounjaro has tripled!
Fact:
Yes, prices have increased in some places due to high demand and supply shortages, but not to the extreme many posts suggest. Many pharmacies offer deals or subscription plans. You can also discuss switching to Wegovy, which may be more affordable depending on your country. Check our Trusted Suppliers list for regulated options.
Is it true you’ll regain all the weight once you stop taking GLP-1s?
Fiction:
Weight loss medication should be used in conjunction with amending your eating habits, improving your movement levels and adjusting your relationship with food. When you master this, you will be able to successfully maintain your weight loss when you stop taking the medication.
Is severe hair loss linked with GLP-1 medications?
Fact:
Hair loss is not a direct effect of the drug. It usually happens because of telogen effluvium — when your body is under stress from rapid weight loss, calorie restriction, or nutrient shifts. Hair shedding is often temporary and improves as your body adapts. Adequate protein, vitamins, and overall nutrition can help reduce the impact.
Drugs like Ozempic or Wegovy make you lose muscle instead of fat
Fiction:
Like any weight loss method, some lean mass can be lost. But GLP-1s don’t target muscle. With resistance training and good protein intake, you can maintain strength while losing fat.
The ‘golden dose’ trick is a safe way to get extra medication
Fiction:
Extracting liquid from GLP-1 pens is unsafe. You won’t know the true dose, the drug can become contaminated, and dosing this way is not supported. The only safe dose is the one prescribed..
GLP-1s make you constantly tired
Fact:
For some people. Fatigue is reported, usually from eating less, dehydration, or nutrient gaps. It’s often temporary, but persistent tiredness should be discussed with your prescribing doctor.
Mounjaro causes sulfur burps.
Fact:
Because these drugs slow digestion, food can sit longer in the stomach, leading to gas and sulfur-smelling burps. Eating smaller meals and avoiding fatty foods can reduce this
GLP-1s cause gallstones
Fact:
But it’s usually the weight loss, not the drug itself. Rapid weight loss increases gallstone risk, whether from diet, surgery, or medication. Staying hydrated and avoiding extreme calorie cuts may help..
GLP-1 medication messes up your periods.
Fact:
Sometimes. Women do report cycle changes. These are linked to weight loss and hormonal shifts, not the drug directly. If irregular bleeding continues, see a clinician.
GLP-1s always cause constipation
Fiction:
Constipation is common but not universal. It happens because digestion slows and food volume drops. For many, more water, fibre, and light exercise solve it.
If you have dropped below a BMI of 30 you can't switch supplier
Fiction: Some suppliers will enable you to switch to them if you have proof of your starting weight and copies of your prescriptions from your previous supplier. This is another reason why keeping track of you progress is important. Firstly it keeps you motivated and secondly it is important if you need to speak to another medical professional for any reason.
Submit Your Own Question
Have you seen a claim online or heard something that doesn’t sound right?
We want to hear it.
Go to our Contact Page and submit your “Fact or Fiction” question. We’ll research it, check it against trusted sources, and publish the answer here for everyone to see.
By sharing your questions, you’re helping build a reliable, evidence-based resource that others can use to cut through misinformation about weight loss medication..
