A new study conducted at the University of California revealed that smoking marijuana may just be the secret to a healthy relationship. The new study showed that there's a link between a chemical produced in the brain known as oxytocin and marijuana, especially when there is close contact with another person. The IFLScience suggest that oxytocin may allow for social interactions to be more pleasurable by stimulating the humans' own, built in cannabinoid system. [ 289 more words. ]