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Fainting and summer heat: Warmer days can make you swoon, so be prepared

To prevent a faint stay well-hydrated, avoid extreme temperatures, including long hot showers

William B. Farquhar | The Conversation 

Over one million Americans faint every year, and countless more do worldwide. Fear, pain, the sight of blood or prolonged standing – think the long lines of summer travel – can trigger fainting. These triggers set off a reflex in our nervous system that cause our hearts to paradoxically slow instead of speed up, and our blood vessels to dilate instead of constrict. Blood pressure and brain blood flow plummet, and we faint. Excessive heat plays a role, too, as it makes it more difficult for the body to maintain blood pressure. With the weather warming across the ...

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First Published: Wed, May 17 2017. 09:42 IST
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