New Delhi, Jan. 29 -- If you think quitting cannabis means your brain will bounce back immediately, think again. A groundbreaking new research suggests that heavy marijuana use could leave lasting marks on your memory, long after your last hit.

As cannabis legalisation expands and marijuana products become more potent, scientists are racing to understand the drug's long-term effects. Researchers from the National Institute on Alcohol Abuse and Alcoholism, the University of Colorado School of Medicine and the University of Toronto recently published one of the largest studies ever conducted on how cannabis affects brain function.

Their findings, featured in JAMA Network Open, suggest that heavy cannabis users may experience persistent co...