BLOKES who stay up late bingeing on Netflix have poorer quality sperm, a study suggests. Researchers say men should go to bed before 10.30pm and kip for 7.5 hours if they want kids.
It comes after they quizzed 104 men on their sperm quality and sleep habits at Danish fertility clinics.
1 A study has found that men who stay up late watching Netflix may have poorer quality spermCredit: Getty – Contributor
Those who stayed up late were less likely to meet the World Health Organisation standard for “normal” sperm.
It means they had a low sperm count or poorly formed sperm, which can struggle to swim and fertilise eggs.
Fellas were 2.75 times more likely to have normal sperm if they nodded off before 10.30pm than between 10.30pm and 11.30pm.
And this rose to almost four times (3.97) more likely when compared with those who went to bed even later.
Men who slept between 7.5 and 8 hours a night were 6.18 times more likely to meet the standard than those who kipped for fewer than seven.
But the quality of sleep, such as the number of times they woke in the night, made no difference, Aarhus University found.
Evidence suggests sleep deprivation can cause the immune system to overreact and attack sperm.
Early bedtimes and sleep durations of 7.5 to 7.99 hours were associated with higher semen quality
And going to bed late may also see couples running out of time to romp.
Prof Hans Jakob Ingerslev, who worked on the study, said: “Early bedtimes and sleep durations of 7.5 to 7.99 hours were associated with higher semen quality.
“The study suggests potential areas of optimisation in relation to treatment of male infertility.” Dr Raj Mathur, from Manchester University NHS Foundation Trust, commented: “The study suggests men who are trying for a baby should be going to bed early and getting a decent amount of sleep.
“They should think about what is keeping them up and try to change their habits, whether it’s binge-watching Netflix or sending emails.
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“Going to bed earlier with their partner may also increase their opportunity for sex, improving their chances of success further.
“Studies show there are numerous health benefits from going to bed early and getting a good amount of sleep.
“There is a link between the body’s endocrine system, which controls hormones, and the body clock.” The findings were presented at the annual meeting of the European Society of Human Reproduction and Embryology in Vienna, Austria.
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