American scientists from Columbia University in New York have discovered a link between lack of sleep and an increased risk of heart disease in women. The study was published in the scientific journal magazine Scientific Reports.
Experts tested nearly a thousand New Yorkers and selected 35 participants who typically slept seven to eight hours a day. In the 12-week study, women spent the first six weeks sleeping according to their normal schedule, and the other six weeks they went to bed 1.5 hours later than normal. The quality of night sleep was recorded using medical trackers.
The study found that after six weeks of reduced sleep, cells lining blood vessels became flooded with harmful oxidants. Lack of sleep meant that the body was unable to activate antioxidant reactions to eliminate destructive molecules.
“This is one of the first direct evidence that moderate chronic sleep deprivation causes heart disease. Dr. Sanja Djelic, leader of the study, said many problems could be solved if people got at least seven to eight hours of sleep a day.”
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