The study focused adults in Michigan who were seeking medical cannabis recertification or a new certification for chronic pain in 2014 and 2015.
Whether changes can be reversed or are passed on to children is still unknown
The lab will start its international expansion by opening up testing operations for local consumers and cannabis exporters in Colombia.
The authors of the paper point out that regulation in a legalized market could help control these risks and improve consumer safety.
A new study conducted on laboratory animals shows that exposure to cannabis and stress during adolescence may lead to long-term anxiety disorders characterized by the presence of pathological fear.
The study, which was conducted in mice, specifically found that CBD caused an increase in pressure inside the eye of 18 percent for at least four hours after use.
Adolescent marijuana use may alter how neurons function in brain areas engaged in decision-making, planning, and self-control, according to researchers at the University of Illinois at Chicago.