Cannabidiol (CBD) and Stress Response: Psychobiological Mechanisms
United States125 participantsStarted 2025-06-16
Plain-language summary
The aim of this study is to determine the effects of regular cannabidiol (CBD) use on the psychobiological mechanisms of the stress response. This will be achieved by comparing acute stress responses of adults who either use or do not use CBD regularly. Correlates of CBD use, including tobacco use, will be collected.
Who can participate
Age range
21 Years – 70 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Adults who are relatively healthy and aged 21-70 years.
* Must keep a normal sleep schedule (sleep during nighttime, awake during daytime).
* Must either (1) use CBD daily/regularly or (2) not use CBD regularly.
Exclusion Criteria:
* Participated in previous acute stress studies that included a similar stress induction.
* Current, unstable: major psychiatric disorder or medical condition (e.g., uncontrolled hypertension above 160/100).
* Self-reported current pregnancy.
* Self-reported current use of illicit substances (other than cannabis).
* Non-compliance with instructions for study visit (abstinence from alcohol, caffeine, physical activity, etc.)
* Students of the principal researcher
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Change in subjective states (stress, anxiety, positive affect)