Hot baths could increase heart attack risk

Tue, 26 Apr 2011
Taking a hot bath on a cold day could increase the chances of having a heart attack, new research suggests.

A study led by Chika Nishiyama at Kyoto Prefectural University of Medicine School of Nursing in Japan has found that the rate of cardiac arrests following a hot bath increases dramatically from summer to winter, Reuters reports.

The team studied data from nearly 11,000 cardiac arrests in the western prefecture of Osaka between 2005 and 2007.

They found that the rate of heart attacks was 54 per ten million people for those who had been bathing prior to going into cardiac arrest.

This was the highest rate for any activity, followed by exercising with a rate of ten cardiac arrests per ten million.

The risk increased for bathers who had a hot bath on a cold day.

It is thought this because the change in temperature results in a rapid blood pressure drop which stresses the heart.

Earlier this month, new research suggested that heart function is better for those recovering from a cardiac arrest if they start physical activity soon after the event than if they delay it for a few weeks.
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