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Heart attack lowest in September but not amongst diabetics
Dr KK Aggarwal | 22 Sep 2011

There is a seasonal pattern of deaths from heart attacks with more fatal events (20 to 30 percent variation) occurring in the winter than the summer.

BUT THIS seasonal pattern is absent in diabetics or those taking beta blockers or aspirin. The heart attack trends are independent of gender, geographic location, age, and the type of heart attack (ST elevation or non-ST elevation). In-hospital mortality fatality rates for heart attack also follow a seasonal pattern, with a peak of 9 percent in winter and 8.4% in the summer. Deaths from heart attack are highest in January and lowest in September, with a relative risk difference of 18.6 percent.