Weight training makes you bald

Musclemen who pump iron are more likely to go bald, scientists warn.

They have discovered bodybuilders’ testosterone soars after a weights session – and that turns into a toxic substance which attacks hair follicles.

Boffins found testosterone levels soared an average 25 per cent after one of the sessions. They returned to normal after 30 minutes when the body converted the male hormone into a chemical called DHT.

But DHT, or dihydrotestosterone, shrinks follicles and roots – so hair grows back thinner each time.

It is the biggest single cause of baldness other than genes.

Men who had a high-fat diet were found to be at greatest risk of the balding hormones. Women who lifted weights suffered the same side-effect.