India, May 27 -- New research published on May 6 in the Proceedings of the National Academy of Sciences explores the relationship between sleep duration and health across different cultures. The study suggests that sleep needs are not universal and that cultural factors play a significant role in determining optimal sleep duration. Also read | No fixed bedtime? Study shows it could increase your risk of heart attacks and strokes by 26%, even if you sleep 8 hours

The study found that the optimal amount of sleep for health differs from country to country, and people who sleep in alignment with their culture's norms tend to report better health. The findings also highlighted that longer sleep is associated with better health, but too much s...