As GLP-1 weight-loss drugs gain popularity, experts say digestive side effects are well established, while evidence linking them to hair loss and Ozempic face remains uncertain.
WEBDESK – SHARJAH NEWS
As demand for weight-loss medications such as Ozempic, Wegovy and Mounjaro continues to rise worldwide, researchers are working to separate scientifically proven side effects from claims circulating widely on social media.
While gastrointestinal problems remain the most common and well-documented adverse effects of glucagon-like peptide-1 (GLP-1) receptor agonists, experts say evidence for conditions such as hair loss, “Ozempic face” and other widely discussed symptoms remains mixed, with more long-term studies needed.
Digestive side effects are well established
Medical specialists say nausea, vomiting, diarrhea and constipation are among the most frequently reported side effects of GLP-1 medications.
These symptoms occur because the drugs slow stomach emptying and alter communication between the digestive system and the brain, helping people feel fuller for longer and consume fewer calories.
Manufacturers classify these gastrointestinal symptoms as “very common” but note they usually become less severe as patients adjust to treatment.
Hair loss may be linked to rapid weight loss
Hair thinning has become one of the most talked-about concerns among users after research suggested an association between GLP-1 medications and hair loss in adults with Type 2 diabetes.
Patient information for Wegovy and Mounjaro lists hair loss as a possible side effect. However, researchers say it remains unclear whether the medications themselves are responsible.
Many experts believe rapid weight loss is the more likely explanation, triggering temporary hair shedding through nutritional deficiencies, metabolic stress or telogen effluvium—a reversible condition commonly seen after significant physical stress.
Doctors note similar patterns have long been observed in people following bariatric surgery or strict calorie-restricted diets.
‘Ozempic face’ is not unique to the medication
Another widely discussed term is “Ozempic face,” used to describe facial changes such as sagging skin, hollow cheeks and a more aged appearance following significant weight loss.
Dermatologists and plastic surgeons say these changes are caused by the loss of facial fat and can occur after any rapid weight-loss method, including surgery or intensive dieting.
Experts stress that the condition is not unique to Ozempic or other GLP-1 drugs.
Eye complications appear to be rare
Researchers have also examined whether GLP-1 medications may increase the risk of certain eye conditions.
Some studies have suggested possible links to age-related macular degeneration in people with diabetes, while others have identified a potential association with non-arteritic anterior ischemic optic neuropathy (NAION), a rare condition that can cause sudden vision loss.
Drug manufacturers acknowledge the possibility of this complication in prescribing information for some medicines, including Wegovy, but emphasize that it remains extremely uncommon.
Questions remain over pregnancy
Doctors have also reported an increase in unexpected pregnancies among some women taking GLP-1 medications.
Researchers suggest this could result from improved fertility associated with weight loss or reduced absorption of oral contraceptive pills because the medications delay stomach emptying.
However, scientists caution that evidence remains limited because pregnant women were excluded from the original clinical trials.
Health authorities, including the UK’s Medicines and Healthcare products Regulatory Agency (MHRA), advise women not to use GLP-1 medications while pregnant or trying to conceive due to insufficient safety data.
‘Ozempic foot’ lacks scientific support
Another social media trend, known as “Ozempic foot,” describes feet appearing bonier after significant weight loss.
Although scientific evidence is limited, podiatrists say rapid weight loss from any cause can reduce the protective fat cushioning beneath the feet, potentially changing foot shape or causing discomfort. Similar effects have also been documented after bariatric surgery.
Experts urge caution
Healthcare specialists say growing public interest in GLP-1 medications has fueled both legitimate scientific research and widespread online speculation.
While digestive side effects are strongly supported by clinical evidence, researchers say more studies are needed to determine whether hair loss, fertility changes and cosmetic effects result directly from the medications or from rapid weight loss itself.
Despite ongoing research into their long-term safety, GLP-1 medications remain among the most effective treatments currently available for obesity and Type 2 diabetes when prescribed appropriately and monitored by healthcare professionals.
