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New research has found that getting the right amount of sleep may help reduce your risk of a heart attack, even if you have a genetic predisposition to heart disease.
Carried out by researchers at the University of Colorado Boulder along with co-authors at the Massachusetts General Hospital, USA, and the University of Manchester, UK, the new study looked at 461,347 individuals age 40 to 69 who had never had a heart attack and who were taking part in UK Biobank, a large long-term study which includes genomic data on more than half a million UK residents.
The researchers analysed the participants’ self-reported sleep habits and medical records and also looked at their genetic information to determine whether those who were genetically predisposed to short sleep were also more likely to have heart attacks.
To make their analysis they used a method called Mendelian randomization, which involves studying genetic variants to see whether certain factors are associated with a higher or lower risk of disease. As it gives more reliable results, any associations found are more likely to suggest a direct relationship.
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