Emily Oster

2 min Read Emily Oster

Emily Oster

How Bad Is It to Use a Hot Tub While Trying to Conceive?

Q&A on sperm counts

Emily Oster

2 min Read

How detrimental is it for a male and female couple to sit in a hot tub (likely just once) close to the time they are trying to conceive?

—Kim

For some reason, this brings up a lot of thoughts about sex ed for me. I have memories of two stories from high school. One was that you could get pregnant in a hot tub even if you were not having sex (I guess the idea is the sperm could swim?) and the other is that you couldn’t get pregnant having sex in a hot tub. Actually, neither of those is true. Sperm wouldn’t survive swimming around in the hot tub, but if you have unprotected sex, you could get pregnant.

I digress.

In terms of your question, the worry about hot tub exposure for women is during, not before, pregnancy, with possible risks related to neural tube defects. So using a hot tub prior to pregnancy would not be a concern. For men, the concern is that heat could kill sperm. If your partner has a low sperm count, it may be good to avoid regular hot tub exposure during the time you are trying to conceive (also, he should wear loose underwear in general). If sperm count isn’t a concern, then this isn’t something to worry about.

Community Guidelines
A positive pregnancy test is seen resting on top of a calendar.

Nov. 17, 2022

7 min Read

How Long Does It Take to Get Pregnant?

Some answers on first and subsequent pregnancies—pulled from your survey data

Two mothers smile at their new baby smile.

Jun. 2, 2022

6 min Read

Three Books You Might Really, Really Need

Queer parenting, infertility and a gentle approach to cleaning

A woman looks concerned while holding a pregnancy test.

Apr. 15, 2022

3 min Read

Follow-up: Metformin in Women

Fertility and birth defects