Is testosterone the best anti-ageing drug?

Ageing | Testosterone is the drug of
the future

Testosterone is “as close to a direct
anti-ageing medication as science has
yet produced” for men and for trans-
men. It works like a “magic wand”;
users report “increased energy, more
muscle mass, decreased body fat,
greater sex drive, and a general sense
of well-being”. So why don’t all men
take testosterone when they hit middle
age? Perhaps they soon will. On the
anecdotal evidence collected here, they
certainly should. (Alexis Madrigal,
Fusion, 4,630 words)