In this study, 575 HIV & hepatitis C co-infected women were followed for an average of 11 years. 56% reported no THC (marijuana) use, 25% reported less than weekly use, 12% reported weekly use, and 7% reported daily use at the beginning of the study.
The analysis was looking for association of THC (marijuana) use and progression to liver fibrosis.
In this large cohort the authors conclude that THC was not associated with progression to significant liver fibrosis, however alcohol use was independently associated with liver fibrosis.
Again, using THC, (marijuana) was NOT associated with progression of liver disease in these immunocompromised and infected women.