Even Short-Term Sleep Deprivation Linked to Heart Problems

⁣ Updated June⁣ 1, 2025

New research indicates that even a few nights of insufficient sleep can trigger molecular mechanisms that elevate the risk of cardiovascular issues. The Uppsala University-led study, published in Biomarker Research, examined how sleep deprivation impacts proteins associated with heart disease.

Jonathan Cedernaes, a physician and docent at Uppsala University,⁢ noted that nearly half of Swedes experience regular sleep disturbances, especially shift workers. the ‍study aimed to pinpoint how lack of sleep increases cardiovascular disease risk, seeking opportunities for intervention.

Chronic sleep loss is a growing public health concern, linked in population studies to increased risks of heart attack, stroke, and atrial fibrillation. while lifestyle factors like diet and exercise influence ⁤heart health, researchers controlled these variables in a lab setting to isolate sleep’s effects.

The study involved 16 healthy, normal-weight young men with ⁣good sleep habits. Participants spent ‍time in a⁣ sleep laboratory where meals and activity were strictly controlled during two sessions. One session allowed normal sleep for⁤ three nights, while the other restricted sleep to about four hours per night. Blood samples were taken in the morning and ⁣evening during both sessions,‍ and after 30 minutes of high-intensity exercise.

Researchers measured levels of approximately 90 proteins in the blood. They found that many proteins⁣ associated with increased inflammation rose when participants ⁣experienced sleep deprivation. Many⁤ of these proteins have previously ⁣been ‍linked to a higher risk of cardiovascular diseases, including heart failure and coronary artery ⁢disease.

Cedernaes emphasized the importance of sleep for cardiovascular health, even early in life. He noted that while larger studies often focus on older individuals with pre-existing risks, this study showed similar protein increases ‍in younger, healthy individuals after just a few nights of sleep deprivation.

Physical exercise produced a slightly different response after sleep loss. ‍While some key proteins increased regardless of sleep, others linked to the positive effects of exercise still increased, even with too little sleep. Previous research indicated that exercise during sleep deprivation could increase the load on heart muscle cells.

Cedernaes stated that the study enhances understanding of sleep’s role in cardiovascular health. ‍He also noted that while exercise can offset some negative effects of poor sleep,it cannot replace sleep’s essential functions.

Cedernaes added that⁢ further research is⁣ needed to explore how these effects might vary in women, older adults, patients with heart disease, or ⁣those with different sleep patterns.Ongoing research aims to develop better guidelines on leveraging sleep, exercise, and other lifestyle factors to prevent cardiovascular diseases.

What’s next

Future studies will investigate the long-term effects of sleep deprivation on diverse populations and explore personalized interventions to mitigate cardiovascular risks associated ⁤with poor sleep.