NYU Langone Oct 7 2025 A noninvasive device that delivers weak electrical currents to the brain may help those with multiple sclerosis cut back on excessive cannabis use, a new NYU Langone Health study of women with the condition shows. More than half of people with multiple sclerosis use cannabis products to ease sleep problems, chronic pain , and muscle spasms, among other common symptoms. Experts say up to 20 percent may develop cannabis use disorder, a condition marked by disruptive, hard