New research indicates that quality sleep may be a more crucial factor for longevity than diet or exercise, emphasizing the importance of rest for long-term health.
When considering factors that contribute to longevity, diet and exercise often take center stage. However, a recent study suggests that there is one health habit that may be even more closely linked to lifespan: sleep.
Researchers from Oregon Health & Science University have found that sufficient quality sleep could be a better predictor of longevity than diet and physical activity. This highlights the critical role that rest plays in maintaining long-term health and survival, as reported by ScienceAlert.
In their study, the researchers analyzed survey data collected in the United States between 2019 and 2025. They examined trends in life expectancy alongside self-reported sleep duration. The findings revealed that individuals who consistently slept less than seven hours per night had a significantly lower life expectancy, even after accounting for other factors such as physical inactivity, education, and employment status. Only smoking was found to have a stronger association with reduced lifespan.
Experts emphasize the importance of sleep, noting that it affects nearly every system in the body. Insufficient sleep has been linked to various health issues, including obesity, diabetes, weakened immunity, cardiovascular disease, and impaired brain function. The latest findings reinforce the notion that inadequate sleep may quietly elevate long-term health risks in ways that many people may underestimate.
Andrew McHill, a co-author of the study, expressed surprise at the strength of the connection between sleep and longevity. He recommends that individuals aim for seven to nine hours of sleep whenever possible.
While the study does not downplay the importance of exercise and nutrition, it does indicate that sleep duration shows a stronger statistical association with life expectancy than many other lifestyle factors, including dietary and exercise habits. Researchers noted that sleep may influence the body’s recovery processes, hormone regulation, tissue repair, and inflammation management—all of which are critical to aging.
Health experts, including those from the American Academy of Sleep Medicine and the Sleep Research Society, recommend that adults strive for at least seven hours of sleep per night to optimize health. Researchers suggest that improving sleep habits could be one of the simplest lifestyle changes individuals can make to enhance long-term wellness and potentially extend lifespan.
To improve sleep quality, experts recommend several strategies:
Maintain a consistent bedtime schedule, reduce screen time before bed, avoid excessive caffeine late in the day, exercise regularly, keep bedrooms cool and dark, and practice relaxation techniques such as yoga or meditation.
Even small improvements in sleep consistency can yield significant health benefits over time. While exercise and healthy eating are essential components of good health, this recent research suggests that sleep deserves equal—if not greater—attention when it comes to longevity.
Prioritizing seven to nine hours of quality sleep each night could play a major role in enhancing both lifespan and overall well-being.
Disclaimer: This article is for informational purposes only and is based on findings from a scientific study. It should not be considered medical advice. Readers should consult a qualified healthcare professional before making any significant dietary or health-related changes, according to ScienceAlert.