CIRCADIAN RHYTHM DISORDERS

This study tests whether a supplement containing a beneficial gut bacterium (Akkermansia muciniphila) and a plant compound (berberine) can improve how night-shift workers process sugar. Two hundred healthcare and industrial workers will take either the supplement or a placebo for…

This study looks at whether being awake during the late-night hours (2:00-4:00 AM) makes people feel more hopeless, have worse decision-making, and experience more suicidal thoughts. Adults who have had suicidal thoughts in the past six months will be tested in a lab and at home …

This study looks at whether filtering out blue light at night in hospital rooms can reduce inflammation, protect thinking skills, and improve mood and sleep in 80 adults after elective heart surgery. Participants will have their blood tested for signs of inflammation and heart st…

This study aims to translate and validate a French version of the Sleep Regularity Questionnaire, a tool that measures how irregular a person's sleep patterns are. Researchers will enroll 50 adults with chronic insomnia or circadian rhythm disorders who already need a 14-day slee…

This study aims to understand why night shift workers are more likely to become obese. Researchers will compare 1,000 shift and day workers from five European countries. They will look at diet, sleep, and body samples to find the biological and behavioral reasons behind weight ga…