The answer is yes, but the issue needs proper understanding. Many large-scale studies, including those published in the journal of the American Heart Association, indicate that individuals who habitually nap for too long (typically over 60 to 90 minutes daily) have a significantly higher stroke risk compared to those who nap briefly or not at all.

However, it is crucial to clarify the underlying reasons to avoid hastily dismissing napping, which is otherwise beneficial for health. Current scientific evidence suggests that long daytime naps are not a direct cause of stroke. Instead, they serve as a warning sign, or "red flag," for other potential underlying health issues:

Compensating for poor quality night sleep

Those who require excessive napping often experience inadequate sleep at night. The most common cause is sleep apnea syndrome. This syndrome reduces oxygen supply to the brain, leading to high blood pressure, irregular heart rhythms, and is a primary cause of stroke.

Signs of underlying medical conditions

Individuals who consistently feel tired, sluggish, and crave long daytime naps are often at higher risk for metabolic diseases such as diabetes, obesity, dyslipidemia, or high blood pressure. These underlying conditions are the core reasons for a surge in stroke risk.

Blood pressure changes

Waking up after an excessively deep nap can lead to sudden fluctuations in blood pressure and heart rate, placing additional strain on the cardiovascular system.

Napping is like a tonic; taken in the right dose, it is highly effective, but overuse can signal that the body is unwell. Photo by AI

Experts recommend three important actions. First, maintain "power naps." Napping is a beneficial habit that helps restore energy, improve memory, and reduce stress. However, the ideal duration should only be 20 to 30 minutes. Second, prioritize night sleep; aim for 7-8 hours each night. If you frequently snore loudly, wake up startled, or gasp for breath while sleeping, consult a doctor immediately.

Finally, listen to your body. If you get enough sleep at night but still feel constantly drowsy during the day and need to nap for hours to feel alert, your body is sending a "cry for help." Proactively seek a general health check-up, especially for blood pressure, blood sugar, and blood lipids.

Dr. Hoang Tien Trong Nghia

Head of Neurology Department, Military Hospital 175