Mounjaro hair loss searches have more than doubled in a year

South Wales Argus

06-08-2025

Online searches for 'Mounjaro hair loss' have more than doubled in the past year, increasing by 143% .
The condition, known as telogen effluvium, is a temporary form of hair loss linked to physical stress. Hair regrowth typically begins three to six months after weight loss stabilises.
'Hair loss on Mounjaro isn't typically due to the medication itself, but rather the metabolic changes that come with sudden weight loss," says Jason Murphy, Head of Pharmacy at Chemist4U.
"When people lose a significant amount of weight quickly, typically 10-20% of their body weight in just a few months, it puts the body under stress.
"That stress, combined with changes in diet and hormones, can trigger telogen effluvium.'
Telogen effluvium causes hair follicles to shift prematurely into their resting phase. Normally, most hair is actively growing, with only a small percentage resting. But when the body is under stress, a larger proportion switches to resting, leading to increased shedding two to three months later.
'This is your body's way of conserving energy during a period of change,' he says. 'Hair growth isn't essential for survival, so the body temporarily redirects energy elsewhere. It's understandably upsetting for patients, but it's actually a protective response.'
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How to minimise hair loss during Mounjaro treatment
While hair shedding on Mounjaro is often temporary, it can still be distressing for those experiencing it. Fortunately, there are simple, science-backed steps that you can take to protect your hair.
1. Follow proper dose titration
"Your doctor or pharmacist will monitor your progress while you're taking Mounjaro," says Jason, an expert in weight loss injections. "Follow your prescribed schedule carefully, this is sometimes called titration, and don't try to increase your dose or lose weight too quickly. Aiming for around 1 to 2 pounds a week is much gentler on the body and can reduce how much hair you shed."
2. Prioritise protein and balanced nutrition
Protein is essential for growing healthy hair because it's the building block of new hair cells. It also helps your body produce the enzymes and hormones needed to support hair growth from the inside out. If your diet lacks essential nutrients, a daily multivitamin can help fill the gaps. Look for products with biotin, iron and zinc, as these play an important role in nourishing your hair follicles and scalp.
3. Practice gentle hair care
Avoid harsh brushing, heat styling or tight hairstyles like ponytails and braids as these can put extra stress on your hair. Use a mild shampoo that won't strip your scalp of its natural oils. Over-washing can lead to irritation, so washing two to three times a week is often enough unless you have very oily hair.
4. Support scalp health
Scalp massage can stimulate blood circulation to the scalp, improving its overall health and promoting hair regrowth. Using a massage brush or your fingertips to massage your scalp can also help distribute haircare products more evenly and make them more effective. If your hair feels dry or damaged, natural remedies like rosemary oil or black tea can help repair it at home.
5. Prioritise sleep and stress management
Stress is a well-known trigger for hair loss. To support both your mental health and hair health, build in time for rest, sleep and activities that help you manage stress, whether it's regular exercise, mindfulness or simply taking time out for yourself.
Most adults should aim for 7 to 9 hours sleep per night. This is particularly important for those experiencing hair loss, as quality sleep supports the regulation of growth hormone and tissue repair.
6. Explore topical treatments
"If you notice hair shedding while taking Mounjaro, speak to your GP or pharmacist about topical Minoxidil (Regaine for Men or Regaine for Women)," says Jason. "Minoxidil encourages blood flow to your scalp and hair follicles. This can help nutrients and oxygen flow into your hair so it grows back stronger."