Using cannabis may cause changes in the human body's epigenome, a study of over 1,000 adults suggests. The epigenome functions like a set of switches, activating or deactivating genes to change how our bodies function. "We observed associations between cumulative marijuana use and multiple epigenetic markers across time," explained epidemiologist Lifang Hou from Northwestern … [Read more...] about Cannabis Use Linked to Epigenetic Changes, Study Finds