At Sciencealert.com David Nield reports,
Dropping temperatures and changes in atmospheric pressure can lead to an increase in the risk of heart failure for elderly people, according to a large-scale study – and more care needs to be taken to counter the effects.Read more here.
...the body reacts naturally to the cold: our heart starts beating faster to keep us warm, for a start, and the body also tightens its arteries in response to cold, decreasing thermal conduction in the skin and raising blood pressure as a result.
What's more, hormone changes in response to the cold make the blood more likely to clot. Any of these biological changes can trigger cardiovascular issues as the temperature goes down, perhaps by making existing conditions worse.
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