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 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. 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 getting too little sleep may increase the risk of an early death from cardiovascular disease, stroke, and heart attack.
A pooled analysis published in a major medical journal combined data from multiple sleep studies across countries and followed almost 475,000 adults for up to 25 years. The research found that disrupted sleep or regularly sleeping less than six hours a night was associated with a substantially higher chance of developing or dying from cardiovascular disease, and an increased risk of stroke.
The researchers recommend six to eight hours of regular nightly sleep as optimal for protecting health and reducing the risk of chronic illness. They also warn that sleeping less than five hours per night is especially problematic, since short sleep causes daytime impairment and steadily increases long-term health risks.
Chronic sleep deprivation can trigger changes in the body, such as production of chemicals and hormones that raise the risk of stroke and heart disease. For example, cytokines—markers of inflammation linked to atherosclerosis (hardening of the arteries)—can be activated by prolonged sleep loss.
Sleep loss also raises the chance of developing hypertension, diabetes, high cholesterol, and obesity, all of which are known risk factors for heart disease and stroke. Hormonal changes related to poor sleep can contribute to insulin resistance and glucose intolerance, markers associated with type 2 diabetes.
At the other extreme, regularly sleeping more than nine hours may have negative implications and sometimes indicates underlying conditions such as cardiovascular disease or depression.
While the study supports treating chronic short sleep as a lifestyle risk similar to sedentary behavior, alcohol abuse, and tobacco use, experts caution that more research is needed to fully understand the causal mechanisms linking sleep disorders to increased cardiovascular and stroke risk.
In the meantime, people who want to reduce their risk of heart attack and stroke can follow common prevention steps: control blood sugar, manage cholesterol and blood pressure, quit smoking, lose excess weight, eat a healthier diet, and be more active.
For additional resources related to personal and business protections, see World Wide Navigator insurance.
Small-business owners concerned about staff safety and liability can also review options such as Fireworks Stands Insurance to ensure appropriate coverage and risk management.
Frequently Asked Questions
How many hours of sleep do adults generally need?
Most adults do best with six to eight hours of regular nightly sleep to support overall health and reduce long-term disease risk.
Can too little sleep really cause heart problems?
Chronic short sleep is linked to inflammation, hypertension, diabetes, and other conditions that raise the risk of heart disease and stroke.
Is sleeping more than nine hours harmful?
Regularly sleeping over nine hours may signal underlying health issues and should be discussed with a healthcare provider if it is a new or persistent change.