Iran Press/ Asia: The study, published in Frontiers in Psychology, surveyed more than 1100 young adults from New Zealand and the United States about their sleep, physical activity, diet, and mental health.
Lead author Shay-Ruby Wickham, who completed the study as part of her Master of Science, says the research team found sleep quality, rather than sleep quantity, was the strongest predictor of mental health and well-being.
"This is surprising because sleep recommendations predominantly focus on quantity rather than quality. While we did see that both too little sleep -- less than eight hours -- and too much sleep -- more than 12 hours -- were associated with higher depressive symptoms and lower well-being, sleep quality significantly outranked sleep quantity in predicting mental health and well-being."
"This suggests that sleep quality should be promoted alongside sleep quantity as tools for improving mental health and well-being within young adults," Wickham says.
"Sleep, physical activity, and a healthy diet can be thought of as three pillars of health, which could contribute to promoting optimal well-being among young adults, a population where the prevalence of mental disorders is high and well-being is suboptimal," Wickham says.
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