Washington, Oct 31: Risk of heart attack increases with adjusting clocks in summers while turning the clock back during autumn reduces the danger slightly, shows a new Swedish study.

Scientists at Karolinska Institutet have examined how the incidence of myocardial infarction in Sweden has changed with the summer and winter clock-shifts since 1987.

The researchers found that adjusting the clocks to summertime on the last Sunday in March increases the risk of myocardial infarction in the following week, because of a lack of sleep during the time.

U. S. health officials at the Centers for Disease Control and Prevention said the rate of new diabetes cases in the country increased by
90 % in the last decade as a result of increasing obesity and sedentary lifestyles. The numbers may be underestimated as these are from self reported surveys conducted by the CDC and about a third of people with diabetes don't yet know they have the disease.

According to the Canadian Cardiovascular Congress, the immigrants who come to Canada for the better life have the higher risk of death due to stress of settling down in a new country.

Researchers from the Simon Fraser University in Vancouver conducted a study on 618 Canadian residents, in which 460 were immigrants. The narrowing of artery was compared by the researchers and they found that most of the migrants, who stayed longer in Canada, started building more plague in their arteries.