Below are links to clinical trials on CBD:
1. Use of CBD to treat Alzheimers. An Australian research team conducted the test on mice.
https://www.medicaljane.com/2014/03/08/study-cannabidiol-cbd-may-help-fight-cognitive-impairments-from-alzheimers/
2. Use of CBD to treat inflammation. It was done on mice, with EAF (effectively Multiple Sclerosis in humans).
https://www.medicaljane.com/2015/11/25/study-topical-cbd-treatment-may-reduce-central-nervous-system-inflammation/
3. Use of CBD to treat anxiety. This was done on people, small sample size, but effective results.
https://www.ncbi.nlm.nih.gov/pubmed/20829306
4. Use of CBD to treat menstrual pain (cramping).
https://www.medicaljane.com/2017/10/05/treating-menstrual-cramps-and-pmdd-with-medical-marijuana/
5. Use of CBD to suppress chronic pain and inflammation.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3371734/
6. Use of CBD to suppress later stages of breast cancer.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4209152/
Just as a FYI:
This is a study that shows CBD helps those using marijuana chronically and encountering challenges with psychological conditions and damaged cognition – see: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5870061/