Try Googling "Medicinal benefits of Cannabis". I'll be surprised if you get any negative hits.
Big Pharma are peddling drugs to counteract the side effects of other drugs they've already mugged us off with.
Anti-biotics are over-prescribed and as a result, bacteria are becoming immune to them.
The Western World is currently addicted to prescription pain-killers.
Check out the excellent mini-series Dopesick (starring Michael Keaton) to get an idea of why Big Pharma and the Tories fight natural remedies tooth and nail.