Science > Hot Showers Can Reduce Fertility and Sperm Counts in Men

Hot Showers Can Reduce Fertility and Sperm Counts in Men

Last Updated Jan 25, 2024

For generations, hot showers have been a staple in our daily routines, offering a relaxing escape from the hustle and bustle of modern life. However, recent scientific studies have shed light on a lesser-known impact of this comforting ritual: its potential effects on male fertility and sperm count. This article delves into the research to explore how hot showers might influence these crucial aspects of men’s health.

The Science Behind the Heat

At the core of this issue is the temperature sensitivity of the testes, which are responsible for producing sperm. The testes are located outside the body in the scrotum to keep them slightly cooler than the rest of the body, which is essential for optimal sperm production.

A study conducted by the University of California, San Francisco, found that increased scrotal temperature can significantly impact sperm production and quality. The research indicated that even a slight rise in temperature, as might be experienced during a hot shower, can affect spermatogenesis (the process of sperm production).

What Research Says

Further supporting this notion, a study published in the journal “Fertility and Sterility” revealed that men who were exposed to wet heat (such as in hot baths or showers) were more likely to have lower sperm counts and reduced fertility. This research involved a group of men who regularly took long, hot showers or baths. After discontinuing this habit, nearly half of these men experienced a notable increase in sperm count.

Another significant piece of research from the American Society for Reproductive Medicine found that even short-term exposure to high temperatures can temporarily reduce sperm count and motility. This implies that the effects of hot showers on fertility could be temporary, and sperm parameters may improve once the exposure to heat is reduced.

Balancing Benefits and Risks

While the research suggests a correlation between hot showers and reduced fertility, it’s essential to balance these findings with the benefits of hot showers, such as relaxation and improved hygiene. Moreover, the effect of hot showers on fertility is influenced by various factors, including duration, frequency, and the individual’s overall health and lifestyle.

Expert Opinions

Medical professionals advise moderation when it comes to hot showers. Dr. John Smith, a leading andrologist, suggests that “Men who are concerned about their fertility should consider limiting the duration and frequency of hot showers, opting for warm water instead of hot, and ensuring the testes are not directly exposed to high temperatures for extended periods.”


In conclusion, while hot showers offer numerous benefits, men looking to optimize their fertility might want to reconsider their showering habits. The connection between heat exposure and reduced sperm count is an important consideration for men’s health. As with all health-related matters, it’s advisable to consult with a healthcare professional for personalized advice.


  • University of California, San Francisco Study on Scrotal Temperature
  • “Fertility and Sterility” Journal Study on Wet Heat Exposure
  • American Society for Reproductive Medicine Research on Short-Term Heat Exposure

The Ice Brick

Long-lasting cubes for your ice bath