People who regularly stay up late may face a greater risk of certain health concerns, even when they get the same number of hours of sleep as people who wake up earlier.
A study involving more than 1,600 adults between the ages of 47 and 59 examined the possible connection between sleep patterns and overall health. Participants shared information about their typical sleeping habits and were classified as early risers, night owls, or somewhere in between. Researchers also conducted health evaluations to identify possible differences among the groups.
The findings suggested that men who stayed up late were more likely to have diabetes or sarcopenia. Sarcopenia is the gradual loss of muscle mass and strength that can occur with age. Women who identified as night owls were more likely to have increased abdominal fat and a greater risk of metabolic syndrome.
Metabolic syndrome refers to a group of conditions that may include high blood pressure, elevated blood sugar, excess abdominal fat, and unhealthy cholesterol levels. Together, these conditions can increase the risk of heart disease, stroke, and diabetes.
Researchers noted that the increased health risks may not be caused by a late bedtime alone. Night owls may experience lower-quality sleep or be more likely to develop habits that affect their health, such as eating late at night, smoking, or spending long periods without physical activity.
Maintaining a consistent sleep schedule, staying physically active, eating balanced meals, and limiting late-night snacks may help support better health. Anyone experiencing ongoing sleep problems or concerns about diabetes, muscle loss, or metabolic health should speak with a healthcare provider.
Source:
Yu J, Yun C, Ahn J, et al. Evening chronotype is associated with metabolic disorders and body composition in middle-aged adults. The Journal of Clinical Endocrinology & Metabolism, 100 (4): 1494-1502.
