Staying Healthy

Heat-related illnesses are on the rise

In the journals

By , Executive Editor, Harvard Men's Health Watch

photo of a man outdoors wiping sweat from his forehead with a cloth; angle of the photo shows the sun over his shoulder

The incidence of heat-related ailments has risen over the past five years, and older men are especially vulnerable, according to a study published in December 2022 by FAIR Health, a nonprofit that studies health care costs and coverage. Researchers analyzed 39 billion health claims filed for the months May to December from 2016 through 2021, looking for those that dealt with heat stress, heat exhaustion, and heatstroke.

Heat stress is characterized by heavy sweating, muscle pain or cramps, and lightheadedness. Heat exhaustion happens when excessive sweating leads to more symptoms, including headache, nausea, dizziness, weakness, and a rapid pulse. In heatstroke, the most severe ailment, the body becomes unable to cool itself. A person with heatstroke stops sweating, and body temperature rises to dangerous levels. Without emergency care, a person with heatstroke can die or suffer permanent disability.

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About the Author

photo of Matthew Solan

Matthew Solan, Executive Editor, Harvard Men's Health Watch

Matthew Solan is the executive editor of Harvard Men’s Health Watch. He previously served as executive editor for UCLA Health’s Healthy Years and as a contributor to Duke Medicine’s Health News and Weill Cornell Medical College’s … See Full Bio
View all posts by Matthew Solan

About the Reviewer

photo of Howard E. LeWine, MD

Howard E. LeWine, MD, Chief Medical Editor, Harvard Health Publishing

Dr. Howard LeWine is a practicing internist at Brigham and Women’s Hospital in Boston, Chief Medical Editor at Harvard Health Publishing, and editor in chief of Harvard Men’s Health Watch. See Full Bio
View all posts by Howard E. LeWine, MD

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