CBD research: original studies and public health sources
Compare what CBD studies tested, what they found and which claims their results support.
Ask what was actually studied.
CBD alone, a THC–CBD medicine, a cannabis extract, and a retail gummy are different interventions. A finding about one should not silently turn into a promise about another. Look for the formulation, participants, comparison group, outcome, and treatment period.
Two examples worth a closer look.
Our sleep guide discusses a small randomized pilot trial in which most sleep outcomes were similar between CBD and placebo. Our safety guide explains why an FDA-described randomized trial adds to the questions about liver safety. Neither paper provides a universal answer for every consumer product.
Check the tested formulation, participants, comparator and measured endpoint before applying a finding to a claim.
Illustrative composition · AI-generatedGo to the original source.
How we use these sources.
Guides link to the public health material or original study behind their specific points. Product comparison checklists are editorial tools, not clinical validation. The library launched on October 19, 2026; the date on a guide records its source check, not medical review.
Read more about safety
CBD for sleep: what does the research actually say?
Why feeling sleepy, sleeping better, and treating insomnia are different outcomes.
CBD for pain: separate the product from the evidence
How to tell research on CBD alone from research on THC–CBD medicines or cannabis.
CBD side effects: what is known and what is not
An introduction to safety signals, liver concerns, and the limits of consumer CBD evidence.