Clinical trials
Circadian Rhythm Disorders clinical trials
Below are recruiting circadian rhythm disorders clinical trials, each written for real people, not researchers. We’re tracking 54 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07744711Enrolling by invitation
Testing a light therapy app on an iPad
This study tests an iPad app that provides light therapy, which may help with conditions like seasonal depression or sleep problems. You will use the app for a period of time, and you may also choose to provide blood samples for a biomarker sub-study.
New York, New YorkAges 18 years+ - NCT06743373Recruiting
Cannabis and sleep in young adults
This study looks at how cannabis affects sleep, daily rhythms, and sensitivity to light in young adults. You would either stop using cannabis for 4 weeks (if you are a regular user) or serve as a non-user control, to compare sleep patterns.
Pittsburgh, PennsylvaniaAges 18–25 - NCT06104280Recruiting
How opioid addiction meds affect sleep and eyes
This study tests how three common medications for opioid use disorder (methadone, buprenorphine, and naltrexone) affect eye function, sleep, and daily body rhythms. It may help find ways to improve treatment for opioid addiction.
Birmingham, AlabamaAges 18–80 - NCT07294781Recruiting
Circadian rhythm study in healthy adults during wakefulness
This study explores how your internal body clock and sense of time change during 36 hours of staying awake. You will stay in a lab and complete simple tasks to help researchers understand the link between circadian rhythms and time perception.
AarhusAges 23–45 - NCT06544018Recruiting
Sleep and body clock study for CAPS patients and family members
This study looks at how CAPS (a genetic condition that causes inflammation) affects sleep and daily body rhythms. It compares people with CAPS to healthy family members living in the same home, to understand differences without any treatment being tested.
BronAges 6 years+ - NCT07494084RecruitingPhase 4
How sleep loss and body clock disruption affect insulin resistance
This trial studies how losing sleep and disrupting your internal body clock may cause insulin resistance, a condition linked to diabetes. You will stay in a lab for several days to test your body's response to sleep changes and a morning drug called octreotide. The goal is to understand why shift work and jet lag can lead to health problems.
Spokane, WashingtonAges 18–45 - NCT06296823Recruiting
Daily rhythms in healthy young adults
This study looks at how your body's daily rhythms (your internal clock) work by measuring natural chemicals in your body. It's for healthy people aged 17-35 who live at or above Denver's altitude.
Boulder, ColoradoAges 17–35 - NCT07329283Recruiting
Nighttime nutrition and sleep health study
This study looks at how eating at night affects your sleep and body clock. You will spend two nights in a sleep lab to test the effects of a small meal before bed.
Salt Lake City, UtahAges 18–35 - NCT05184933Recruiting
Study sleep timing and blood pressure patterns in adults
This study looks at how your sleep schedule and body clock relate to blood pressure control. You may be asked to follow a study plan that helps researchers understand what sleep and daily timing changes do to hypertension.
Portland, OregonAges 25–64 - NCT04743271Recruiting
Test how food timing affects the body’s daily rhythms
This study looks at how the timing of meals (and daily timing habits) affects your body’s natural clock and related health measures. It involves healthy, generally low-risk participants and may help researchers understand how timing affects metabolism and sleep.
Portland, OregonAges 18–40 - NCT07138313Recruiting
How diet affects sleep and daily rhythms
This study looks at how what you eat affects your sleep and daily rhythms. Healthy young adults aged 18-32 are invited to join to help researchers understand this connection.
UppsalaAges 18–32 - NCT05807178Recruiting
Light treatment to stabilize sleep-wake rhythm in ICU delirium
This trial tests whether controlled bright light in the ICU can improve confusion and the sleep-wake rhythm in adults who develop delirium. If it works, it may help patients become more clear-minded sooner while they recover in intensive care.
BerlinAges 18 years+ - NCT07292597Recruiting
Circadian timing and time perception study for healthy adults
This trial looks at how your internal body clock affects the way you perceive time. It may help you understand your own sleep patterns and daily rhythms better.
AarhusAges 23–45 - NCT07715721Recruiting
Acupuncture and Traditional Chinese Medicine for Sarcopenia and Sleep Problems in Older Adults
This study looks at how Traditional Chinese Medicine body types and sleep patterns relate to muscle loss (sarcopenia) in older adults, and tests whether acupoint stimulation (like acupuncture without needles) can help.
TainanAges 20 years+ - NCT07049783Recruiting
How exercise timing affects blood pressure response
This study looks at how the time of day you exercise affects your blood pressure response. It is for young adults with slightly elevated blood pressure who are generally healthy, not on certain medications, and do not have sleep or chronic health issues.
Newark, DelawareAges 18–39 - NCT07339592Enrolling by invitation
How meal timing affects sleep in medical residents
This study tests whether changing when and what you eat for two weeks can improve sleep quality and how your body's natural clock works. It is for medical residents in Jordan who do not have chronic health issues or sleep disorders.
AmmanAges 25 years+ - NCT07685262Recruiting
Bright light therapy for better daytime function in students
This trial tests if morning bright light therapy can help university students feel more awake and function better during the day. You may be eligible if you live in shared student housing and don't have a diagnosed sleep problem.
Hung HomAges 18 years+ - NCT07677111Recruiting
Chronotype alignment and time perception study
This study explores how your natural sleep-wake pattern (chronotype) affects the way you perceive time. If you are a clear early bird or night owl, you may be invited to attend one early-morning and one late-evening session.
Hong KongAges 18–55 - NCT07558642Recruiting
Nerve Block to Reduce Confusion in Older ICU Patients
This study tests whether a nerve-blocking injection (stellate ganglion block) can reduce confusion and help restore normal sleep-wake cycles in older adults staying in the intensive care unit. Researchers hope this treatment may help patients recover faster and feel more alert.
Antalya, MuratpaşaAges 65–99 - NCT07545499Recruiting
Daily rhythms and physical recovery after COVID-19
This study looks at how your body's natural daily rhythms (sleep-wake cycles, energy patterns) affect physical function and daily activities in people recovering from long COVID. Understanding these patterns may help develop better recovery strategies.
Ankara, AltindağAges 18–65 - NCT07410936Recruiting
Self-Acupressure for Social Jet Lag in Female Students
This study tests whether a daily self-acupressure routine (gently pressing on specific points on your body) can help reduce social jet lag—the mismatch between your sleep schedule on school days versus free days—in female health-science students. It involves a 12-week home practice and tracking your sleep quality.
Niğde, MerkezAges 18–25 - NCT07315074Recruiting
Esketamine for better sleep after surgery in postmenopausal women
This trial tests if a low dose of esketamine, given during anesthesia, can improve sleep quality after lower-limb fracture surgery in postmenopausal women. It aims to find a safe way to help you rest better after your operation.
Jingjiang, JiangsuAges 45 years+ - NCT07249918Recruiting
Wearable devices for dementia care in rural Taiwan
This trial tests if wearable devices can help monitor and improve behavioral symptoms like agitation, depression, or sleep problems in people with Alzheimer's or mild cognitive impairment. It also involves their caregivers.
Beigang, YunlinAges Any age - NCT07222449Enrolling by invitation
Wearable devices and blood tests for sleep in Alzheimer's
This study uses wrist monitors and blood tests to understand sleep problems in people with Alzheimer's dementia. It aims to improve sleep management through digital therapy and personalized insights.
Beigang, YunlinAges Any age
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Common questions
- Are there clinical trials for circadian rhythm disorders?
- Yes. Clin2 currently lists 54 recruiting circadian rhythm disorders studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a circadian rhythm disorders trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a circadian rhythm disorders trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.