Frequent cannabis use linked to worse epilepsy

Adults with hard-to-treat epilepsy who used cannabis most days had more than twice as many convulsive seizures per year and more rapidly became resistant to antiseizure medications compared with nonusers, according to new research.

The authors examined 64 adults with drug-resistant epilepsy—when two or more antiseizure drugs haven’t controlled seizures—who were admitted to a specialized inpatient unit ...