The potency of street cannabis has jumped from 4% to more than 15% since the 1990s

The potency of cannabis sold on America's streets has jumped from 4 percent to more than 15 percent in recent years, raising the risks of addiction and psychiatric disorders, according to a leaked report from Washington state. The leaked document features research from the federal government's National Institutes of Health on the potency of cannabis samples seized by the Drug Enforcement Administration and by state and local police agencies between 1995 and 2021. These products, often called 'dabs', can have close to 100 percent purity of THC, the psychoactive ingredient in pot 'The botanical cannabis plant has a limit of THC percentage. The document features research from the federal government's National Institutes of Health on the potency of cannabis samples seized by the Drug Enforcement Administration and by state and local police agencies between 1995 and 2021. Pictured: child-friendly cannabis gummy packaging Experts have cautioned against America's speedy switch to legalized pot, amid a growing body of evidence that widespread availability leads to increased use, particularly among young people, together with addiction and mental health issues.