For how we live.
The word covers everything from sunscreen to self-surgery. The low-risk end has real evidence behind it; the invasive end is where the harm sits, and the whole subculture carries a mental-health cost.
Young men are chasing higher testosterone with 'natural boosters' and direct-to-consumer TRT. The supplements are largely unproven; unnecessary therapy carries real costs to fertility.
Young men are starting hair-loss drugs early and stacking them with dermarolling and oral minoxidil. Two drugs have decades of evidence; the trend's framing runs ahead of it.
An umbrella review of the meta-analyses puts the association at RR 1.45. The AUA's guideline treats ED as a risk marker, and classes shockwave, stem cell and PRP therapy as investigational.
Researchers searched in four languages across three engines. One in ten clinics said it would prescribe testosterone to men with normal levels; one in five claimed it cuts cardiovascular risk.
The randomised evidence in older men found a moderate effect on sexual function and none on vitality or walking. A 5,246-man safety trial cleared it on heart attacks and found more fractures.
Two datasets report an age-independent fall in men's testosterone across birth cohorts. A separate study of nine thousand men found much of the variation between cohorts came from the tests themselves.