A recent study led by the Columbia University Mailman School of Public Health and Columbia University Irving Medical Center, set out to investigate what percentage of people who frequently use cannabis may experience cannabis withdrawal syndrome (CWS).
According to the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), a formerly frequent user of the drug has cannabis withdrawal syndrome when they experience at least three or more withdrawal symptoms within a week from cessation. Most frequently, the participants reported experiencing nervousness or anxiety (76%), hostility (72%), sleep problems (68%), and depressed mood (59%). In cases wherein physical symptoms did appear, the most commonly encountered were headaches, tremors, and sweating. CWS was significantly associated with how many joints somebody smoked per day.