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Lack of sleep increases heart attack risk

A new study has shown that people in their 60’s and 70’s that sleep less than 7.5 hours each night are at a greater risk of heart attack, stroke, and sudden cardiac death than those who get more sleep.

The sleep study

Japanese researchers studied the sleeping habits of 1,255 people with hypertension for about 4 years. The average age was 70.4 years of age. The researchers analyzed the following; sleep duration, daytime and night time blood pressure, and cardiovascular disease.

Those who slept for less than 7.5 hours were more likely to develop cardiovascular disease and suffer a heart attack or stroke.

The researchers comments

Prof Eguchi from the Jichi Medical University in Japan wrote, “The incidence of cardiovascular disease was 2.4 per 100 person-years in subjects with less than 7.5 hours of sleep and 1.8 per 100 person-years in subjects with longer sleep duration.”

They added, “Shorter duration of sleep is a predictor of incident cardiovascular disease in elderly individuals with hypertension. Physicians should inquire about sleep duration in the risk assessment of patients with hypertension.

The study paper titled “Short Sleep Duration as an Independent Predictor of Cardiovascular Events in Japanese Patients With Hypertension” was published in the Archives of Internal Medicine.


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