An estimated 2.5 million people in the UK are using weight-loss medication this year. Originally developed as a diabetes treatment, drugs such as Ozempic and Mounjaro are now widely used for weight loss, with users typically losing between 15% and 20% of body weight in a matter of months.
Their growing popularity comes amid increasing concern around body image and appearance pressure in men. Around 1 in 3 men in the UK report experiencing negative feelings about their body image, while only 1 in 5 say they are satisfied with how they look. A survey of 2,000 UK men found that a quarter say their appearance negatively impacts their mental health.
The rise of male lookmaxing
This pressure has contributed to the rise of “lookmaxing” a trend centred on maximising attractiveness through constant self-improvement. What often begins with exercise, skincare, and grooming has evolved into more extreme measures such as cosmetic procedures, hair transplants, fillers, Botox, and weight-loss injections. Online communities promoting extreme self-optimisation have gained particular traction among younger men seeking to enhance jawline definition, muscularity, and grooming standards. Experts warn that this push for rapid physical transformation can place significant stress on the body, including on hair health.
The link between weight-loss jabs and hair shedding
Dr Abdulaziz Balwi, leading hair specialist at Elithair Clinic, explains: “Skinny jabs like Semaglutide and Tirzepatide work by mimicking the hormone response in the body that regulates insulin and makes us feel full. Whilst many skinny jab users report hair loss as a side effect of the injections, there is currently no direct clinical evidence to prove the correlation. This isn’t to say, however, that those prescribed the medications can or will not experience hair loss. This can happen in response to the rapid and extreme weight loss that individuals experience when on the medication.”
The condition linked to this shedding is called telogen effluvium, a temporary form of hair loss triggered when physical stress causes hair follicles to enter the resting phase of the growth cycle prematurely. Users often notice increased shedding several months after beginning treatment, aligning with the timing of substantial weight reduction. The condition generally resolves within 3–6 months, provided nutritional needs are met and overall health is supported.
Nutrient deficiency as a contributing factor
Dr Balwi also points to nutrition as a key concern: “When people lose weight, whether it be through diet, surgery, or weight-loss injections, it can result in a loss of vital nutrients to the body, which can impact hair health. It is therefore critical that people are still consuming the vitamins and nutrients that the body needs.” Common deficiencies linked to hair loss include zinc, iron, biotin, and protein.
Who is most at risk
Those most at risk of hair loss as a side effect of weight-loss injections include
- Individuals experiencing rapid weight loss
- Those restricted to low-calorie diets
- People with pre-existing thyroid conditions or anaemia
“Because of this, if you are considering any of these medications, it is important to flag any underlying medical conditions with your doctor or GP first so that these pre-existing conditions can be managed,” Dr Balwi advises.
What patients should do
Health professionals advise that anyone experiencing noticeable hair changes while using weight-loss injections should consult their GP. Supplements targeting common deficiencies may be recommended under medical supervision, though they are not a substitute for a varied diet.
As weight-loss drug use continues to grow across Great Britain, with data from University College London indicating hundreds of thousands to millions of adults now engaged with these treatments, experts are calling for a balanced approach that prioritises sustainable health over rapid transformation. Consulting qualified medical professionals before starting any weight-loss medication remains essential.