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Analysis and Health

Do Ozempic and Wegovy really cause hair loss?

As semaglutide-based weight loss treatments such as Ozempic and Wegovy become more popular, new side effects are emerging – and one is hair loss

By Grace Wade

1 April 2025

Like all medications, GLP-1 drugs such as semaglutide – the active ingredient in Ozempic and Wegovy – have side effects

Iuliia Burmistrova/Getty Images

The use of weight loss treatments like Ozempic and Wegovy has in the Western world. But as more people turn to these treatments, which mimic the appetite-suppressing hormone GLP-1, more potential side effects are emerging, including hair loss.

Evidence of this first appeared during . Of the more than 2100 adult participants taking the drug, 3 per cent experienced hair loss, compared with only 1 per cent of the roughly 1200 participants taking a…

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