There are nearly 500 natural compounds in marijuana and over 100 of those chemical compounds (thanks to a recent discovery) are called cannabinoids.

Knowing that morphine was isolated from the poppy and cocaine was isolated from the coca leaf, Dr. Mechoulam wondered about the main active component(s) in cannabis.

Insys Therapeutics Inc. announced Tuesday, July 5, that the United States Food and Drug Administration (FDA) has approved the company’s drug Syndros, an orally administered liquid formulation of the synthetic cannabinoid dronabinol, according to a release.

The receptor in the brain involved in the "high" people feel after smoking marijuana is revealed in a new, detailed, 3D image today, according to a new study.

(CNN) - Could medical marijuana treat Alzheimer's patients? One recent study found THC, the psychoactive ingredient in cannabis, stimulates the removal of toxic plaque in the brain, a common feature of the disease.

DALLAS – Researchers at UT Southwestern Medical Center report the most detailed 3-D structure to date of the brain receptor that binds and responds to the chemical at the root of marijuana’s high.

Salk Institute scientists have found preliminary evidence that tetrahydrocannabinol (THC) and other compounds found in marijuana can promote the cellular removal of amyloid beta, a toxic protein associated with Alzheimer's disease.