Mounjaro, a widely used weight loss injection approved by the NHS, has helped many shed pounds effectively. However, some users have recently reported an unexpected side effect: hair loss.
Dr. Donald Grant, GP and Senior Clinical Advisor at The Independent Pharmacy, explains that while hair loss isn’t a common side effect, it has been observed in a number of cases. The reasons behind this vary but are generally linked to factors that can be addressed with proper care.
“One major cause is rapid weight loss itself, which can stress the body and trigger hair shedding,” Dr. Grant says. “Another is nutritional deficiencies, which occur because Mounjaro suppresses appetite by activating GLP-1 receptors. This appetite reduction can lead to insufficient intake of essential nutrients for healthy hair growth.”
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Additionally, stress—both emotional and physiological—associated with changes in routine and diet can contribute to hair follicles shedding prematurely.
Fortunately, these issues can be managed without compromising weight loss. Dr. Grant advises maintaining a balanced diet rich in protein, biotin, and zinc, which are essential for hair health. Foods like chicken, eggs, and red meat are particularly beneficial. For those struggling to meet their nutrient needs through food alone, supplements containing iron, zinc, protein, and biotin may help.
Managing stress is equally important. Prioritizing adequate sleep, regular exercise, and stress reduction techniques can support overall well-being and reduce hair loss risk.
Finally, gentle hair care practices are crucial if hair shedding begins. Avoid tight hairstyles and minimize the use of heat styling tools like straighteners and curling irons to protect hair follicles.
“If you notice significant hair loss while on Mounjaro, consult your GP to rule out other causes and receive tailored advice,” Dr. Grant advises. With these precautions, users can continue their weight loss journey without sacrificing hair health.