Heat and Pregnant Women

A pregnant women sitting on a bench exercising on a hot day.

Why are pregnant women more at risk from extreme heat?

  • Pregnant women are more likely to get heat exhaustion, heat stroke, or other heat-related illness sooner than nonpregnant women. This is because their bodies must work harder to cool down both the pregnant woman’s body and the developing baby.
  • Pregnant women are also more likely to become dehydrated. This also means they won’t be able to cool themselves as well by sweating.

I’m pregnant, why should I be concerned about extreme heat?

  • In very hot environments or during strenuous activity a pregnant woman’s core (internal body) temperature may rise. In some cases, increased internal temperature and fever during pregnancy have been linked to birth defects and other pregnancy complications.

Stay safe during extreme heat

  • Follow tips on how to prevent heat-related illness.
  • Heavy sweating can remove salt and minerals from your body. Talk to your doctor about how to safely replace salt and minerals lost through sweating.
  • Do not engage in very strenuous activities and get plenty of rest.
  • Check the local news for health and safety updates regularly.

Learn how to spot heat-related illness

Extreme heat infographic badge. Ready.gov logo CDC: Emergency Preparedness and Response Social Media