IBD-Sleep: A Pilot Study Looking at Changes in Sleep Timing and IBD Symptoms

This research study is testing whether changes in sleep timing and morning light treatment may have an impact on symptoms related to inflammatory bowel disease.

Inclusion Criteria: * Biopsy-proven IBD * Active IBD symptoms * Impaired IBD quality of life * Age \>/=18 years old * Fluency in English * Physically able to travel for study visits Exclusion Criteria: * Ileostomy, colostomy, ileoanal pouch, or ileorectal anastomoses, are planned for imminent surgery and/or have short bowel syndrome * Other significant chronic disease * Retinal pathology, history of eye surgery, taking photosensitizing medications * Recent history of light treatment * Lifetime psychotic or bipolar disorder * Acute suicidal ideation * Substance use disorder in the past 3 months, cannabis use \>1/week * High risk for or diagnosed with obstructive sleep apnea, and/or narcolepsy * Severe hearing problem, intellectual disability or serious cognitive impairment * Pregnant, trying to get pregnant, or breastfeeding * Night work or travel outside the eastern time zone in the past month