- Manuscript - A new study provides evidence that the cannabis compound CBD can block infections of COVID-19 in human cells and mice. The study was led by American researchers from the University of Chicago. Marsha Rosner led the team. She is a professor in the university’s Ben May Department of Cancer Research. Rosner told Reuters the research showed that CBD was able … [Read more...] about Study: Cannabis Compound CBD May Help Prevent, Treat COVID