Hair shedding after a GLP-1 weight loss medication

Noticed more hair in the brush since starting a GLP-1 weight loss medication? You are not alone. Shedding after rapid weight loss is common, usually temporary, and a baseline scan can show whether yours is already settling.

Why rapid weight loss triggers shedding

When the body loses weight quickly, it reads the change as a physical stress. Energy and nutrients are redirected towards essential functions, and hair follicles, which are metabolically hungry but not essential, are among the first to be put on pause. A larger than usual share of them shifts into a resting phase. It is the pace of the change, rather than the medication itself, that is most often responsible.

Telogen effluvium, explained

This pattern has a name: telogen effluvium. Hairs that shift into the resting phase do not fall straight away. They sit for around two to three months, then release as new growth pushes through beneath them. That delay is why the shedding usually starts a few months after the weight loss begins, often just as the medication seems to be working well, which makes the connection easy to miss.

Why it is usually temporary

The reassuring part is what is happening underneath. In telogen effluvium the follicles are resting, not lost, and new growth is usually already on its way behind the hairs that shed. Once weight stabilises and the body adjusts, the cycle generally rebalances over the following months. If the shedding carries on well beyond that, or density does not return the way you expected, it is worth checking whether something else, such as underlying pattern loss, is contributing.

Nutrients worth checking

Eating much less on a GLP-1 often means less protein and fewer micronutrients, and hair is one of the first places a shortfall shows. Iron, protein and zinc are the ones worth checking first. Ask your GP for a blood panel before reaching for supplements, because testing shows what actually needs correcting, and fixing a genuine deficiency removes one obstacle to recovery.

What we do: support and measure

Our role here is twofold. Where an assessment shows it is appropriate, treatments such as PRF or exosomes may support the scalp environment while your hair cycle rebalances. Just as importantly, we measure. An AI scalp analysis at your consultation records a precise baseline, and we review your scalp at every session, so the question of whether the shedding is settling is answered with data rather than guesswork.