Murder and violent crime found to have decreased most in states bordering Mexico as drug cartels lose business to regulation.

The introduction of medical marijuana laws has led to a sharp reduction in violent crime in US states that border Mexico, according to new research.

According to the study, Is Legal Pot Crippling Mexican Drug Trafficking Organizations? The Effect of Medical Marijuana Laws on US Crime, when a state on the Mexican border legalised medical use of the drug, violent crime fell by 13% on average. Most of the marijuana consumed in the US originates in Mexico, where seven major cartels control the illicit drug trade.

– Read the entire article at The Guardian.