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According to experts interviewed by Harper’s Bazaar UK, hair loss linked to medications like Ozempic and Wegovy is most commonly caused by rapid weight loss and nutritional stress, not the drugs themselves. This type of shedding, known as telogen effluvium, occurs when hair follicles are pushed into a dormant phase, leading to excessive daily shedding — but crucially, it is temporary and reversible when properly supported. One of the recommended treatments is the CALECIM Advanced Hair System. “Rapid weight loss almost always causes hair loss,” explains consultant trichologist Anabel Kingsley, noting that hair is “non-essential tissue” and highly sensitive to nutritional and metabolic changes. Influential hair expert Tom Smith adds that sudden weight loss can put the body into a state of shock, which “can interrupt your hair growth cycle, knocking it into a dormant phase, which then is followed by shedding.” While you can’t instantly stop hair that has already entered the shedding phase, Smith highlights that targeted scalp treatment can slow ongoing loss and accelerate recovery. He specifically recommends the Calecim Professional Advanced Hair System, describing it as a scalp elixir that uses exosomes and growth factors to rejuvenate hair follicles. “If there are hairs that are moving into that phase but haven’t yet, it will catch those and stop that wave of hair shedding continuing for any longer than it absolutely has to,” he explains — while also helping follicles return to the growth phase faster. For anyone experiencing so-called “Ozempic hair,” this expert-endorsed, science-driven approach focuses on supporting the follicle environment when the body is under stress — helping hair recover density, strength and normal growth patterns sooner, rather than simply waiting it out.