Scientists have discovered that anabolic steroids and anti-baldness pills are destroying male fertility.

By Ian Horswill


Posted on May 28, 2019

If your man is taking steroids to look good and keep you happy, tell him to stop if you plan to start a family or want more children – as his fertility is being destroyed.

Scientists have discovered that men are at risk of an evolutionary paradox when taking steroids to get a toned and buff physique or taking anti-baldness pills to keep that full head of hair. Their efforts to look good are, in fact, destroying their fertility, BBC News reported.

“I noticed some men coming in to have their fertility tested and these guys were huge,” says Dr James Mossman, from Brown University in the US.

“They are trying to look really big, to look like the pinnacles of evolution,” Dr Mossman told BBC News.

“But they are making themselves very unfit in an evolutionary sense because without exception, they had no sperm in their ejaculate at all.”

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Anabolic steroids increase muscle mass and strength by mimicking the male hormone testosterone in the body. Testosterone promotes muscle building, facial hair and a deeper voice. They are readily used by bodybuilders.

It is 100 per cent illegal to supply anabolic steroids in Australia and the United States without a prescription. However, they are readily available in Asia and Australian Customs detect tens of thousands of steroids each year, with most coming via the mail.

“Isn’t it ironic that men go to the gym to look wonderful, for the most part to attract women, and inadvertently decrease their fertility,” said Professor Allan Pacey, from the University of Sheffield in the UK.

Anabolic steroids fool the brain’s pituitary gland into thinking the testes are going into overdrive. The glands react by shutting down the production of two hormones – known as FSH and LH – which are the key hormones that produce sperm.

The researchers state there is a similar theme in men using medication to prevent male pattern baldness.

The drug finasteride changes the way testosterone is metabolised in the body and can limit hair loss, but side effects may include erectile dysfunction and a hit to fertility.

“I would say more anabolic steroid users are likely to become sterile than you would think – 90 per cent probably,” said Professor Pacey.

“Baldness is a bit more hit-and-miss, but sales are going through the roof and that makes it an increasingly common problem.

“It keeps cropping up in clinics and the message is not getting out to young men that it’s a problem and a bit of info could save them a lot of heartache.”