Does Wegovy Make Your Hair Fall Out?

Hair shedding on Wegovy is most commonly linked to a condition called telogen effluvium — a type of temporary shedding triggered by physical stress on the body. When your body undergoes significant change, such as rapid weight loss or a notable shift in calorie intake, hair follicles can move into a resting phase and shed more than usual a few months later.

This means the shedding is often not a direct pharmacological effect of semaglutide itself, but a response to the metabolic changes that come with losing weight relatively quickly. The same pattern is seen with other forms of weight loss, including bariatric surgery and very low-calorie diets.

What the evidence suggests

Hair loss (alopecia) has been reported in clinical trials and post-marketing data for semaglutide-based medicines. According to the electronic Medicines Compendium (eMC), which holds the official prescribing information, hair loss is listed among the reported side effects. It is generally described as reversible in most cases, though timing and severity vary between individuals.

Nutritional factors worth noting

Reduced appetite on Wegovy can sometimes mean people eat less protein or fewer overall calories than their body needs. Inadequate protein intake is a known contributor to hair shedding, which is one reason many people on a GLP-1 journey are encouraged to pay close attention to their protein levels. If you are concerned about your nutritional intake, speak with your prescriber or a registered dietitian.

If you are curious about other commonly reported physical changes on semaglutide, some people also ask about feeling cold on Wegovy and whether Wegovy thins the hair differently from general shedding — both worth exploring. Those on tirzepatide may also find it useful to read about hair shedding on Mounjaro, as similar mechanisms are thought to apply.

When something like hair shedding begins, it can be hard to pinpoint when it started or whether it correlates with a particular stage of your journey. That is where consistent tracking becomes genuinely useful.

GLP Trackr's side-effect tracking lets you log how you are feeling day by day — including physical changes — and spot patterns over time. If you notice shedding picking up after a dose change or during a period of lower food intake, having a dated log makes that pattern visible and far easier to discuss clearly at your next prescriber appointment. The app's doctor report feature can pull your logged data into a summary you can bring to that conversation, so nothing gets forgotten.

Because protein intake is often linked to hair health during rapid weight loss, the food logging tools — including AI photo scanning and barcode search — make it straightforward to keep an eye on whether you are hitting your protein goals, even when appetite is low.

GLP Trackr is a tracking and journaling companion — it is not a substitute for advice from your prescriber or doctor, and any concerns about hair loss or changes to your health should always be discussed with your healthcare professional. If shedding is severe, sudden, or accompanied by other symptoms, contact your healthcare professional promptly rather than waiting.

For a broader look at how semaglutide works in the body, the guide to how GLP-1 medicines work covers the mechanisms behind many commonly reported changes.

Start logging your side effects and daily wellbeing with GLP Trackr — available free on the App Store and Google Play, with a 7-day trial to get started.