Heat is damaging to the sperm, and theoretically can affect male fertility to a certain extent. But, there is no clear scientific evidence that implicates hot tubs. There may be a temporary reduction in sperm function after a soak, and prolonged repetitive use could cause problems, but none severe enough to avoid the occasional dip.
Saunas do not appear to influence fertility either. A few studies have reported decreased sperm count or decreased sperm movement after sauna use, but in Finland, where saunas are most common, men have high sperm counts and no apparent fertility issues.
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"Can hot tubs make you infertile?" was posted on Tuesday, October 23rd, 2007 at 10:50 pm.