If you want to boost your chances of getting pregnant, the solution may lie in stopping your partner getting too hot!
It’s not a myth that exposure to heat can reduce sperm production: research from a three-year study analysing data from infertile men has shown it can have an impact, whether it’s dry heat (saunas) or wet (hot baths, hot tubs or Jacuzzis). What’s more, our modern lifestyles can increase scrotal temperature, making this more of a factor. Driving for more than two hours has been shown to turn the heat up, with the fertility of long-distance drivers particularly impaired. But working with a laptop on your lap also increases scrotal temperature.
The impact of clothing is more debatable. While one study found that wearing tight underwear also increases scrotal temperature, another found no significant difference between temperatures created by wearing briefs or boxer shorts. Wearing tight fitting trousers has, however, been shown to be linked to a slight increase in sperm abnormalities.
While the debate is still out on the benefits of boxers, the good news is that the impact of your man getting too hot is often reversible, so keeping him cool could be the only lifestyle change you need to make. Researchers at the University of California San Francisco found that half of the infertile men who stopped using hot tubs and saunas had their fertility levels restored; of the remaining men, high use of tobacco and alcohol were also thought to be contributing factors.