# CBD research: original studies and public health sources

https://cbd.bike/research/

[Home](https://cbd.bike/)/The research

FOLLOW THE EVIDENCECompare 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](https://cbd.bike/guides/cbd-for-sleep/) discusses a small randomized pilot trial in which most sleep outcomes were similar between CBD and placebo. Our [safety guide](https://cbd.bike/guides/cbd-side-effects/) explains why an FDA-described randomized trial adds to the questions about liver safety. Neither paper provides a universal answer for every consumer product.

IN CONTEXTFormulation, participants and outcomeCheck the tested formulation, participants, comparator and measured endpoint before applying a finding to a claim.

[01 Sleep outcomes ↗](https://cbd.bike/guides/cbd-for-sleep/)[02 Pain evidence ↗](https://cbd.bike/guides/cbd-for-pain/)[03 Safety questions ↗](https://cbd.bike/guides/cbd-side-effects/)Illustrative composition · AI-generated

## Go to the original source.

[CDC · About CBD](https://www.cdc.gov/cannabis/about/about-cbd.html)[FDA · CBD: risks, side effects and unknowns](https://www.fda.gov/consumers/consumer-updates/what-you-need-know-and-what-were-working-find-out-about-products-containing-cannabis-or-cannabis)[NCCIH · Cannabis and cannabinoids](https://www.nccih.nih.gov/health/cannabis-marijuana-and-cannabinoids-what-you-need-to-know)[Narayan et al. · CBD and insomnia, randomized pilot trial (2024)](https://pubmed.ncbi.nlm.nih.gov/38174873/)[FDA · Randomized CBD liver safety trial](https://www.fda.gov/drugs/regulatory-science-action/cder-investigators-address-safety-cbd-randomized-trial)[Food Standards Agency · Analysis of CBD products (2022–23)](https://science.food.gov.uk/article/123685-analysis-of-cbd-products-2022-23)[FDA · Cannabis regulation, including animal products](https://www.fda.gov/news-events/public-health-focus/fda-regulation-cannabis-and-cannabis-derived-products-including-cannabidiol-cbd)[SAMHSA · Federal workplace drug testing FAQs](https://www.samhsa.gov/substance-use/drug-free-workplace/faqs)[FDA · Hemp seed ingredients in food](https://www.fda.gov/food/hfp-constituent-updates/fda-responds-three-gras-notices-hemp-seed-derived-ingredients-use-human-food)[FDA · Cannabis, CBD, pregnancy and breastfeeding](https://www.fda.gov/consumers/consumer-updates/what-you-should-know-about-using-cannabis-including-cbd-when-pregnant-or-breastfeeding)

## 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 the editorial approach](https://cbd.bike/editorial-policy/)

A CLOSER LOOK

## Read more about safety

[All safety & evidence guides](https://cbd.bike/safety/)

[Safety & evidence ### CBD for sleep: what does the research actually say? Why feeling sleepy, sleeping better, and treating insomnia are different outcomes. 3 min read](https://cbd.bike/guides/cbd-for-sleep/)[Safety & evidence ### CBD for pain: separate the product from the evidence How to tell research on CBD alone from research on THC–CBD medicines or cannabis. 3 min read](https://cbd.bike/guides/cbd-for-pain/)[Safety & evidence ### CBD side effects: what is known and what is not An introduction to safety signals, liver concerns, and the limits of consumer CBD evidence. 3 min read](https://cbd.bike/guides/cbd-side-effects/)