Today's society carries an unrealistic expectation, if not demand, for individuals to fit more and more into their lives. The often teetering balancing act between work and everyday life causes many people to defer sleep to get everything that's expected of them done. Late nights and early mornings can be a recipe for a health disaster.
The problem is that sleep isn't something that can be brokered or traded for supposedly more important tasks. Most people know that getting enough sleep benefits both mind and body, but recent research suggests sleep loss may also raise long-term health risks.
A study published in the European Heart Journal pooled data from fifteen sleep studies across several countries and followed almost 475,000 adults for up to 25 years. The analysis found that disrupted sleep or sleeping less than six hours a night was associated with a substantially higher chance of dying from or developing cardiovascular disease, and a smaller but measurable increase in stroke risk.
The researchers recommend six to eight hours of regular nightly sleep as the optimal amount to protect health and reduce the risk of chronic illness. They also warn that sleeping less than five hours per night appears particularly harmful because it impairs function the next day and steadily raises long‑term risk.
According to the study, chronic sleep deprivation triggers biological changes that increase cardiovascular risk. For example, it can activate cytokines, inflammation markers linked to atherosclerosis, and it can worsen blood pressure, glucose regulation, cholesterol, and body weight.
By the same token, the authors caution against excessive sleep. Sleeping more than nine hours regularly can be associated with underlying health issues such as cardiovascular disease or depression, and may signal the need for medical evaluation.
Although the association between sleep disorders and higher risk of heart attack and stroke is strong, experts note that mechanisms and causation are not fully understood. Meanwhile, integrating well-known heart‑healthy habits—controlling blood sugar, managing cholesterol and blood pressure, quitting smoking, maintaining a healthy weight, improving diet, and increasing activity—can help reduce overall risk.
For related information on workplace effects, see The Dangers of Impairment in the Workplace.
To review insurance options that may be relevant for people with chronic health concerns, see World Wide Navigator Insurance.
Frequently Asked Questions
How much sleep is recommended to reduce heart disease risk?
Most researchers recommend six to eight hours of regular nightly sleep as a general target to support cardiovascular and overall health.
Can short-term sleep loss increase stroke or heart attack risk?
Acute short-term sleep loss affects blood pressure and inflammation, but long-term patterns of chronic short sleep are more strongly linked to increased cardiovascular risk.
Why is too much sleep also a concern?
Regularly sleeping more than nine hours may indicate underlying health problems and has been associated with poorer outcomes in some studies, so it may warrant medical evaluation.
What lifestyle changes help lower heart and stroke risk related to poor sleep?
Improving sleep hygiene, increasing physical activity, eating a balanced diet, maintaining healthy weight, and managing blood pressure and blood sugar can all reduce risk.