A study tested the impact of consuming 400 mg of caffeine at 0, 3, and 6 hours before bedtime. Results showed that caffeine significantly disrupted sleep, reducing total sleep time and increasing...
Health > Sleep
Both short and long sleep durations linked to higher risk of cardiovascular-related mortality
This study, part of the Multiethnic Cohort (MEC) Study, investigates the link between sleep duration and mortality. Data from over 135,000 participants show that both insufficient (≤5 hours) and...
Shift work and sleep disorders increase health risks and accident likelihood
Shift work, particularly night shifts, significantly disrupts sleep patterns and increases the risk of fatigue, cardiovascular diseases, and some cancers. Circadian misalignment during shift work...
Heart rate dynamics reveal strong interaction between sleep stages and autonomic nervous system in sleep apnea patients
This study investigates the relationship between heart rate variability and sleep stages in healthy individuals and patients with obstructive sleep apnea. Sleep stages, defined by EEG patterns,...
Insufficient sleep in adolescents leads to cognitive and emotional impairments
Adolescents who lack sufficient sleep experience cognitive deficits like reduced attention span and impaired learning. Emotional consequences include increased anger, irritability, and difficulty...