A new study show that there is no link between chronic marijuana use as an adolescent and their mental or physical health.

The study, conducted over the past 20 years, was published by the American Physiological Association. The researchers, from the University of Pittsburgh Medical Center and Rutgers University, took all of the initial teenage participants and divided them into four groups

One group almost never smoked marijuana, another used it only in the teenage years, the third didn’t start use until adulthood and the last group used marijuana from early in their teenage years straight through into the adult years, according to Daily Caller.

The study was ignited by the constant evidence that suggested regular marijuana use in teenagers was directly linked to later mental problems such as schizophrenia and depression.

Jordan Bechtold who led the research was also expecting similar results, but was caught off guard by what the study unfolded.

The data from the study revealed that “chronic marijuana users were not more likely than late increasing users, adolescence-limited users, or low/nonusers to experience several physical or mental health problems in their mid-30s.”

The study actually found that there were not any significant differences between any of the groups in terms of adult health outcomes.

The researchers concluded that there was in fact no link between teen marijuana use and lifetime anxiety, allergies, headaches, depression or high blood pressure.

The groundbreaking study tracked 408 participants as they grew up rather than studying adults looking back on the marijuana use and current health status.

The researchers of the study have responsibly stated that a single study should not be the only platform to look to, but it should ignite further studies to look into the same thing, which could in turn contribute to the debate surrounding marijuana legalization.

“Everyone wants to prevent teen marijuana use, but we don’t need to exaggerate its harms and arrest responsible adults in order to do it,” Mason Tvert, communications director at the Marijuana Policy Project said.

“Hopefully, this study will lead to a reevaluation of the tactics that are being used to discourage teens from trying marijuana,” he added.