Most people don't come to see me until their hair loss is already obvious—a receding hairline or a visible patch at the crown. By then, we're often working with follicles that have already shrunk past the point of easy recovery. That timing gap is, in my experience, the single biggest reason treatment outcomes disappoint people.
The biology explains why speed matters. Androgenetic alopecia doesn't happen overnight; it's a gradual process in which hair follicles shrink, or "miniaturise," with each growth cycle. Until they eventually stop producing visible hair, marked by progressive miniaturisation of hair follicles and a reduction in the number of active follicles. Early on, that miniaturisation is often reversible with the right intervention. Later, it isn't.
And "later" arrives sooner than people assume. Roughly a quarter of men notice their first signs of hair loss before turning 21, and by age 50, about half have experienced meaningful hair loss. Genetics plays an outsized role here—a man's risk is roughly five times higher if his paternal side has experienced balding, so family history alone should prompt earlier attention, not a wait-and-see approach.
The early signs are subtle and easy to dismiss. A widening part line. More strands left on the pillow or in the shower drain. Hair that feels finer than it used to, even if the overall volume looks unchanged. In women, the pattern tends to differ — diffuse thinning across the crown rather than a receding hairline — and often accelerates around menopause, which means it's frequently mistaken for stress or ageing rather than flagged as AGA.
One newer consideration worth mentioning: emerging reports have started linking GLP-1 weight-loss medications to hair shedding in some patients, with telogen effluvium and androgenetic alopecia identified as the most common patterns involved. Anyone on these medications who notices new shedding should raise it with their doctor early, not after months have passed.
My honest advice: if you're noticing change — not dramatic loss, just change — that's the moment to get evaluated, not a symptom to monitor quietly for a year. The tools we have work best on follicles that are struggling, not ones that have already gone dormant. Early conversations lead to more options. Late ones lead to fewer.
The author is a celebrity hair transplant surgeon and president of the Association of Hair Restoration Surgeons (AHRS) of India.
The opinions expressed in this article are those of the author and do not purport to reflect the opinions or views of THE WEEK.
