In a nutshell
This trial investigated whether sleep duration is associated with cardiovascular events.
Some background
Shorter or longer than normal sleep duration has recently been linked to respiratory disorders, obesity and general poor health. However, the correlation between sleep and cardiovascular events has not yet been investigated. Cardiovascular events, including heart attacks, stroke, heart failure, coronary artery disease and angina (chest pain) are the leading cause of morbidity and mortality worldwide. Therefore, any information that might contribute to the treatment or prevention of these conditions is invaluable.
Methods & findings
6538 individuals who completed a survey on sleep duration and cardiovascular events were included in this study. Those who slept less than 6 hours a day showed twice the risk of developing strokes and heart attacks, and a 60% increase in the risk of developing heart failure, compared to patients who slept 6-8 hours a day. Those who slept more than 8 hours a day showed twice the risk of developing angina compared to those who slept 6-8 hours a day.
The bottom line
This study showed an association between sleep duration and cardiovascular events. Whether changes in sleeping habits could influence the outcome of cardiovascular patients warrants further investigation.
The fine print
Although an association between sleep and cardiovascular events was clearly demonstrated in this study, the causality and effect between the two was not properly examined. Further studies are needed to determine whether this association has any therapeutic significance. Additionally, patient reported results (the use of questionnaires) may be imprecise due to inaccurate recollection or a misunderstanding of the questions.
What’s next?
Consult with your physician about how your lifestyle may effect and improve your quality of life and general health.
Published By :
Clinical cardiology
Date :
Oct 07, 2013
