The pavement shimmers before noon now. The air itself seems to lean against you when you step outside. This summer has made one thing unmistakable: heat is no longer just a seasonal inconvenience we complain about and forget by October. It has become a health emergency, and it is not falling on everyone equally.
Europe is living through what meteorologists are calling its worst heatwave season on record — its fourth major heat wave since May, with wildfires that have forced more than 300,000 people to evacuate across France, Spain, and Greece this summer alone (Reuters). Here at home, a heat dome has parked itself over the West, pushing Phoenix to 116°F and Las Vegas to 115°F, while wildfires burn across Washington, Montana, and Southern California (PennLive). The air has grown difficult to breathe in many regions, and the people who can least afford to struggle are the ones struggling most.
As women, our bodies often respond to extreme heat differently than we realize — and for many of us, the stakes are higher than a bad hair day or a wilted afternoon.
For pregnant women, the danger is quiet but real. Excessive heat can bring dehydration, heat exhaustion, and added stress on both mother and baby. The CDC notes that heat exposure during any trimester has been linked to preterm birth, stillbirth, and low birth weight, and that first-trimester heat exposure may raise the risk of certain birth defects (CDC). Research published this year found something striking: the odds of preterm birth rise about 4% for every 1°C increase in temperature exposure (Nature Medicine). That is not an abstraction — that is a degree on a thermostat translating into a hospital outcome. Staying hydrated, avoiding the hottest hours outdoors, and recognizing the early warning signs — dizziness, headache, nausea, unusual cramping — matter more this summer than most.
For women in perimenopause and menopause, summer doesn’t just feel relentless — it is relentless, and the data backs that up. A long-running national women’s health study found the odds of a hot flash are 66% higher, and night sweats 50% higher, at the summer peak compared to the winter low (Menopause, PMC). It makes sense once you think it through: declining estrogen destabilizes the body’s internal thermostat, so the heat outside becomes one more trigger layered onto a system that’s already unstable from the inside. What can feel like “just another hot flash” may quietly contribute to dehydration, dizziness, fatigue, and broken sleep. This season, listening to your body isn’t a luxury. It’s essential.
Our elderly women carry their own version of this risk. As we age, the body’s ability to regulate its own temperature declines — and certain medications, including diuretics, ACE inhibitors, ARBs, and some psychiatric drugs, can make heat-related illness even more likely (Journal of Clinical Pharmacy and Therapeutics). Many older adults don’t feel thirsty until they’re already dehydrated, which means hydration has to become a daily discipline, not a response to a signal the body may no longer reliably send.
Infants and young girls are the most vulnerable of all. Their bodies cannot regulate temperature the way an adult’s can — a child’s core temperature can rise three to five times faster (NHTSA). They are entirely dependent on the adults around them to keep them cool, hydrated, and out of prolonged sun. In 2025 alone, 31 children died of vehicular heatstroke in the U.S. (NHTSA) — a devastating reminder that a child should never be left in a parked car, not even for what feels like “just a minute.” Outdoor play belongs in the cooler hours now.
And heat rarely travels alone. Wildfire smoke and poor air quality tend to arrive with it, and the same groups most vulnerable to heat — pregnant women, young children, older adults — are also the ones flagged as most sensitive to smoke exposure (Philadelphia Department of Public Health). On the days when both a heat alert and an air quality alert are in effect, staying indoors with the windows shut isn’t overcaution. It’s protecting yourself against two risks that arrived together.
The climate is changing, and so is what it means to care for our health inside it. Sometimes that care looks small: another glass of water, a few extra minutes in the shade, breathable clothing, a phone call to check on an elderly neighbor, making sure a pregnant friend has somewhere cool to rest.
This week, I want to invite you to slow down and actually listen to your body. Heat is more than a line in the weather report. It is a health issue — and for some of us, it is a daily negotiation with our own biology.
Stay hydrated. Stay aware. Take care of one another.
“Whoever gives even a cup of cold water to one of these little ones… will certainly not lose their reward.” — Matthew 10:42
May we continue to care for ourselves and our communities, one refreshing act of kindness at a time. 💜
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