Even the great forefather of the United States, George Washington, understood the infinite benefits of the marijuana plant. At one point in the 1760's Washington speculated that hemp would be a more lucrative cash crop than tobacco. While the forefathers used the plant for it's strong fibers; today, marijuana has become one of the premier solutions to a wide array of medical conditions. Continue reading to learn more about the top uses and implications of medical marijuana in Chesterfield. What Does Medical Marijuana Treat? One of the top reasons people utilize medical marijuana in Utica and around the world is to treat illnesses resulting in severe pain. Medical marijuana is used for migraine headaches, cancer, or longer term conditions, such as nerve pain or glaucoma.