Hotter Nights after Scorching Days Threaten Heart Health and Mental Well-Being

image via New Scientist

June 17, 2025, 1:00 PM

• •Hotter nights caused by climate change increase health risks, including cardiovascular problems, sleep issues, and mental health problems.
• •Rising nighttime temperatures are more dangerous than daytime heat due to the cumulative effect on the body.
• •Simple methods such as cooling hands and feet, taking cool showers, and staying hydrated can help mitigate the health impacts of heat.

As climate change leads to hotter nights, the health risks associated with heat exposure are increasing, causing more deaths, emergency room visits, and sleep problems. Nighttime temperatures are rising faster than daytime temperatures, preventing the body from cooling down and leading to a buildup of heat stress. This can strain the heart, kidneys, and mental health, exacerbating existing health issues. Simple strategies like cooling hands and feet, taking cool showers, and staying hydrated can help mitigate these risks, offering practical ways to stay healthier during heat waves.

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