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Hair loss linked to weight loss jab raises concerns

Hair shedding reported by users after Mounjaro use prompts calls for better nutrition guidance and medical advice.

August 9, 2025 at 10:57 AM
blur Fat jabs left me MALNOURISHED: Nour, 28, shrank from size 18 to 8 in just 7 months on Mounjaro. But then the hideous side effects started...

A closer look at hair loss linked to the GLP-1 drug Mounjaro and what it means for nutrition and patient care.

Weight loss jab prompts hair loss concerns

Nour Mansour, a 28-year-old from London, started Mounjaro and dropped from size 18 to 8 in seven months. Hair shedding began six months later, with clumps falling out and thinning at the temples. The experience has circulated online, with others reporting similar changes and some stopping injections.

Experts say hair loss with GLP-1 therapies may be telogen effluvium tied to rapid weight loss and possible nutrient gaps. They note trials control diet to minimize deficits, while real-world use can leave people short on iron, zinc, B vitamins and protein. Doctors advise blood tests and dietary adjustments for anyone noticing shedding.

Key Takeaways

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Hair shedding is a reported side effect among some Mounjaro users
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Rapid weight loss can trigger telogen effluvium due to nutrient gaps
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Real-world use may require stronger nutrition guidance than trials
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Nutrition testing and supplements can help manage symptoms
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Medical guidance should be sought if hair shedding occurs
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Public reports can influence patient decisions and policy discussions
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Clear guidelines on vitamins and monitoring are needed

"I’d run my hands through my hair and clumps would fall out."

Nour Mansour describes the onset of hair shedding after six months on Mounjaro

"Being a former nurse, I had made sure I checked out every possible side effect before injecting myself for the first time. What I didn’t read about anywhere – and what didn’t appear to have been known at the time – was the distressing possibility of hair loss."

Nadine Dorries reflects on information gaps about this side effect

"Rapid weight loss or sudden dietary changes can leave people deficient in the nutrients essential for healthy hair growth."

Dr Fenton explains potential mechanisms

"During trials, participants are closely monitored and kept on a nutrient-rich diet."

Dr Strain contrasts trial conditions with real-world use

Taken as a whole, this piece shows a tension in modern weight loss medicine: fast results can come with hidden costs. It also shows how patient reports online can shape public perception and policy questions.

The article underscores a gap between clinical trials and real life. Without structured nutrition support, people may experience deficiencies that affect hair and health. Calls for clearer guidance from clinicians and drugmakers are likely to grow as more patients speak up.

Highlights

  • Hair loss is a signal not a badge of success
  • Fast weight loss needs nutrients and care
  • Talk to a doctor before chasing dramatic results
  • Nutrition matters as much as the pill in weight loss

Hair loss linked to weight loss drug prompts safety concerns

The article highlights reported hair shedding among GLP-1 therapies, raising questions about nutrition guidance and real-world safety monitoring. Public reaction and policy questions may follow as patients push for clearer guidelines.

The conversation around safety and nutrition will keep evolving as experts learn more about GLP-1 therapies.

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