This study was done on mice, but the results were largely positive at specific daily THC isolate doses that equate to about 100-200mg in humans. As with other studies of THC & CBD, the most effective MEDICAL doses are higher than the average dose considered standard in the industry.
"Interestingly, daily treatments with THC (2 mg/kg) alleviate mechanical hypersensitivity and pain unpleasantness, modify uterine innervation and restore cognitive function without altering the anxiogenic phenotype. Strikingly, THC also inhibits the development of endometrial cysts."
The research published in early 2020 is here.