Daily use of cannabis has now surpassed daily use of alcohol. Understanding how it affects mental functioning can help users ...

Many Americans use medical marijuana for chronic pain, sleep, and depression. But new research in JAMA says it may not really work. Instead, it may cause new health problems.

Saliva and plasma could be crucial in detecting recurrences or relapses of head and neck cancers, negating the need for a ...

When Leah Willingham began exploring the rise in daily marijuana use, she envisioned a story that could explain the medical ...