Extremely hot and extremely cold days are tied to an increase in the risk of death from heart disease, a new study suggests.
Dec. 13, 2022 -- Climate change, which is linked to substantial swings in extreme hot and cold temperatures, is likely a key culprit, according to lead study author Barrak Alahmad, MD, PhD, of the Harvard T.H. Chan School of Public Health in Boston.
The relative risks of death increased gradually for cold temperatures, but somewhat faster for hot temperatures – especially for heart failure, where the risk in extremely hot weather climbed quickly to as much as 12% higher, according to the analysis. The results were similar even after the researchers adjusted for temperature variability, heatwaves, long-term trends, relative humidity, and air pollutants, including ozone, nitrogen dioxide, and particulate matter.American Heart Association expert volunteer Nieca Goldberg, MD, medical director of Atria New York and a professor at the New York University School of Medicine in New York City, says everyone needs to take steps to stave off the effects of climate change.
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