Expert reveals regular bedtimes significantly protect heart health during night

Consistency in nightly routines has emerged as a vital factor for those seeking to reduce the risk of major cardiovascular issues, including heart attacks and strokes.

A new study from the University of Oulu in Finland, published in BMC Cardiovascular Disorders in 2026, suggests that a regular bedtime is essential for cardiac protection.

Does sleep timing matter?

The researchers tracked the behaviour of 3,231 individuals, aged 46, using wearable technology over one week. For participants getting less than eight hours of sleep, those with irregular habits faced double the risk of serious cardiac events over the following decade. Medical researcher Laura Nauha explains:

"Our findings suggest that the regularity of bedtime, in particular, may be important for heart health. It reflects the rhythms of everyday life – and how much they fluctuate."

How to prevent heart health events?

The study found that variability in the 'midpoint' of sleep was linked to poorer outcomes. Interestingly, wake-up times showed no significant association; the risk was tied specifically to varying bedtimes.

In the irregular group, bedtime varied by an average of 108 minutes, compared to just 33 minutes in the regular group. Nauha notes:

"Previous research has linked irregular sleep patterns to heart health risks, but this is the first time we've looked separately at variability in bedtime, wake-up time, and the midpoint of the sleep period – and their independent associations with major cardiac events."

While factors like stress and workload influence these patterns, Nauha highlights the power of routine: "Maintaining a regular sleep schedule is one factor that most of us can influence."

Please Note: This information is for educational purposes only and does not count as medical advice. Readers should always consult a qualified doctor regarding any questions about their health or a medical condition.