[m463]

Years ago I started lifting weights quite a bit. And my hairline started receeding sort of in the corners of my forehead. Stopped lifting and it stopped.

I suspect the testosterone boost from strength training.

[yoyohello13]

I lost my hair at 23 without exercising at all so damned if you do, damned if you don’t I guess.

[xhrpost]

Curious, why does higher T cause hair loss if T is naturally higher in adolescence where there is less hair loss.

[vinyl7]

Testosterone gets converted into DHT, and DHT causes male pattern baldness. Maybe younger males don't convert as much testosterone into DHT as older guys do

[rpmisms]

DHT also stimulates beard growth, so at least you get a return on investment.

[bena]

I don’t remember exactly, but it’s not testosterone itself that causes the hair loss, but what your body converts the testosterone into.

And that process can ramp up as you get older depending on your genetics.

So more testosterone, more byproducts, more hair loss.

[tomjakubowski]

For one, it's also about the hair follicle's sensitivity to circulating androgens. Maybe that changes with age.