Quality sleep is essential for overall health. New research now shows that the timing of sleep can also affect heart health.
A recent study in the European Heart Journal Digital Health explored the link between sleep timing and cardiovascular diseases, including heart attacks, strokes, and heart failure.
Also Read: Heart-Healthy Foods: Protect Your Heart Naturally
Tracking Sleep Patterns Across the UK
Researchers analyzed sleep data from 88,000 UK adults. Each participant wore a sleep tracker for a week to record bedtimes and wake-up times.
They also collected health information through questionnaires and medical tests. This included lifestyle habits and other risk factors for heart disease.
The study then followed participants for nearly six years to track cardiovascular conditions. Researchers recorded cases of heart attacks, strokes, and heart failure.
The Impact of Bedtime on Heart Health
The study found a clear connection between when people go to bed and their heart disease risk. Adults who slept between 10 p.m. and 11 p.m. had the lowest risk of cardiovascular problems.
People who went to bed after 11 p.m. had a higher risk. Those who consistently slept around midnight or later faced up to a 25% higher chance of developing heart disease.
Why Timing Matters
Although the study does not prove cause and effect, researchers believe sleep timing affects the circadian rhythm, the body’s internal clock that regulates heart function.
Dr. X, the study’s lead author, explained: Sleeping too early or too late can disrupt your circadian rhythm. This may increase the risk of heart problems. While we need more research, the findings suggest an optimal bedtime exists.
Earlier studies have already linked sleep quality and duration to heart health. Sleeping less than six hours or more than nine hours per night can increase the risk of high blood pressure, heart attacks, and strokes. This study adds sleep timing as another factor.
Practical Tips for a Heart-Healthy Sleep
Experts suggest keeping a consistent sleep schedule. A 10–11 p.m. bedtime may help align your body clock and reduce cardiovascular risks.
Good sleep habits—such as avoiding screens before bed, limiting evening caffeine, and keeping the bedroom dark and quiet—can further improve heart health.
Need for More Research
The researchers caution that their results are not yet conclusive. They recommend larger, multi-country studies to confirm the link between bedtime and heart disease. Genetics, lifestyle, and existing conditions may also affect outcomes.
Still, the study offers a valuable public health insight: Diet and exercise are crucial, but sleep timing may also play a key role in protecting the heart, the researchers noted.
