Up to 20,000 deaths a year in North America may be linked to hot temperatures, writes Sameed Khatana
The human body functions in a narrow temperature window and multiple mechanisms in the body attempt to keep it within that optimal window. Extreme heat stresses every organ in the human body as it struggles to control its core temperature. The heart plays a crucial role in this, as it helps pump blood away from the central parts of the body to the skin.
Like all public health issues in this country, the burden of extreme heat falls unequally on certain people. Our study found that the link between extreme heat and deaths was stronger in older compared to younger adults, men compared to women, and Black compared to white adults. Heart disease, diabetes and other chronic medical conditions can make a person more vulnerable to the health effects of extreme heat.
However, there are other, structural reasons behind some of these differences. Due to the long history of segregation and discriminatory housing practices in the U.S., Black Americans tend to live in neighborhoods that are uniquely vulnerable to extreme heat. In New York,
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