
Dr. Thomas Starzl, the "Father of Transplantation," performed the first successful liver transplant in 1967 while at the University of Colorado. Since then, thousands of similar operations are performed every year, with a record-breaking 9,200 liver transplants executed in 2021.
But people who use cannabis are often excluded from receiving liver transplants. That might seem odd, given how many people use in the United States; indeed, the Centers for Disease Control and Prevention estimates that 18 percent of Americans, or 48.2 million people, used cannabis in 2019.