A recent scientific study has issued a serious warning: just three nights of poor sleep can cause harmful bodily changes that increase the risk of heart disease, even in young, healthy adults with no prior health issues.
اضافة اعلان
The study, published in the journal Biomarker Research and led by Dr. Jonathan Cedernaes, an associate professor at Uppsala University in Sweden, involved 16 healthy young men with regular sleep habits. They were closely monitored in a sleep lab, with controlled diets and daily routines.
Sleep Deprivation Alters Blood Composition
During the study, participants first slept normal hours for three nights. Later, their sleep was restricted to just four hours per night for another three nights. Blood samples were taken in the mornings and evenings—before and after intense physical exercise—and nearly 90 different proteins were analyzed.
The findings revealed a spike in inflammatory markers in the blood after sleep restriction. These markers are typically associated with increased risk of cardiovascular disease.
Exercise Helps—But Can’t Replace Sleep
Although physical activity improved some biomarkers, it couldn’t fully offset the negative effects of sleep loss.
“Exercise is certainly beneficial,” said Dr. Cedernaes, “but it cannot replace sleep, which performs vital, irreplaceable functions.”
The research team emphasized the importance of prioritizing sleep as a key preventive measure for heart health from an early age. They also called for further research involving women, older adults, and those with chronic conditions.
A Common Habit with Serious Consequences
Experts warn that frequently staying up past midnight, a habit many people underestimate, may pose serious health risks. A gastroenterologist cautioned that such sleep disruption can upset gut health, which in turn affects the heart.
Sleep Is as Crucial as Diet and Exercise
If you struggle with sleep, you’ve likely heard common advice: turn off electronics before bed, take a warm shower, listen to white noise, or try gentle stretching. These habits can help—but what’s most important is giving sleep the same level of importance as nutrition and exercise.
Conclusion:
This study adds to growing evidence that sleep is a cornerstone of long-term heart health. Just a few nights of poor sleep can set off dangerous changes in your body—so prioritizing quality rest is not a luxury; it’s a life-saving necessity.
