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Night Owls Face Higher Heart Risks, Especially Women, Study Finds

New study links being a night owl to 79% higher poor cardiovascular health prevalence and 16% increased heart attack/stroke risk, especially in women, due to modifiable lifestyle factors.

This research matters because it connects our natural sleep-wake preferences—something many people consider just a personality trait—to concrete cardiovascular outcomes affecting millions. With heart disease remaining the leading cause of death globally, understanding how chronotype influences health behaviors provides crucial insights for personalized prevention strategies. The findings suggest that approximately 8% of adults who identify as definite evening types may need targeted support to overcome circadian challenges that make healthy habits more difficult. For healthcare providers, this research underscores the importance of considering patients' natural rhythms when designing treatment plans and lifestyle interventions. For individuals who struggle with evening preferences, the study offers both a warning about potential risks and practical hope—since the identified risk factors (smoking, poor diet, inadequate sleep) are modifiable through conscious effort and potentially through chronotype-aligned interventions. This bridges the gap between biological predisposition and personal agency in heart health management.