Daylight Saving Time May Affect Heart
Study Shows Fewer Heart Attacks When Clocks Are Moved Back
By Salynn Boyles
WebMD Health NewsReviewed by Elizabeth Klodas, MD, FACCOct. 29, 2008 -- This weekend brings daylight saving time, and if you're lucky enough to get an extra hour of sleep when you turn your clock back Saturday night, a new study suggests that it might save your life.

When researchers in Sweden examined the impact of daylight saving time on heart attack rates in that country, they discovered that people had slightly fewer heart attacks on the Monday after they set their clocks back in the fall and slightly more heart attacks in the days after they set their clocks ahead in the spring.

They presented their findings in a letter published in the Oct. 30 issue of The New England Journal of Medicine.


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