Heat waves associated with increased risk of preterm birth in the U.S.
Heat waves are becoming more frequent and more intense, posing more of a health risk around the world. High temperatures can be deadly, and are especially dangerous for those with cardiovascular and chronic disease — but they begin affecting human lives even before birth.
Several studies have identified an increased risk of preterm delivery and stillbirth after heat exposure around the world. A new investigation, published on Friday in JAMA Network Open, confirmed the link to early deliveries at a massive scale, in a large cohort study capturing over half of the births that occurred in the United States between 1993 and 2017. Its results shed light on the way existing health inequities may be exacerbated by a worsening climate.
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