类固醇激素可提高运动员肌肉耐力，提高体内血色素的指标与含量，促进血红蛋白的生长，提高人在运动中的携氧能力。
研究指示，长期应用类固醇激素可致男性不育，机率高达百分之九十。
Men who use steroids to gain muscle could be damaging their chances of having children, according to scientists.
Researchers have revealed that men who use anabolic steroids, which mimic the effect of the male hormone testosterone in the body and are used as performance-enhancing drugs to increase muscle growth, have a 90 per cent chance of becoming sterile.
The researchers state that steroids trick the brain’s pituitary gland into thinking the testes are going into overdrive.
As such, the glands react by shutting down the production of two hormones – called FSH and LH – which are the key hormones behind the production of sperm.
Mossman and Pacey add that there is a similar theme in men using medication to prevent male pattern baldness, and that while the damage to fertility from steroid use is well known, this is the first time scientists have coined a specific term due to the vast numbers of people now affected.
“I would say more anabolic steroid users are likely to become sterile than you would think - 90 per cent probably,” Pacey said.
The NHS states that regularly taking anabolic steroids can lead to a number of physical and psychological changes in both men and women, as well as potentially dangerous medical conditions.
The physical effects in men can include reduced sperm count, shrunken testicles, breast development, increased risk of prostate cancer and severe acne.
While the physical effects in women include facial hair growth, loss of breasts, deepened voice and hair loss.
The findings follow a recent study which revealed that, like women, men may also have a time limit on having children.
关注我们关注专业可以信赖的健康养生资讯
