Legalizing recreational marijuana does not cause adults to try other illicit drugs, nor does it lead to additional behavioral and financial problems, researchers find.

A new survey of 1,200 patients with chronic pain finds many are substituting medical marijuana for opioids and other pain relievers.

More pot smokers than tobacco smokers diagnosed with emphysema and other airway damage, researchers say.

Patients who treat chronic pain with medical marijuana face a slightly higher risk of heart arrhythmias, researchers say.

Regular pot users report fewer stuffy or runny noses and less sinus pain, researchers say.

Many CBD users are unknowingly consuming THC, which could pose health and legal problems, researchers say.

A new study finds CBD has no impact on driving or cognitive abilities even at high doses.

Cancer patients using medical marijuana report less pain, an improved quality of life and few side effects, researchers say.

More pets, especially dogs, are inadvertently ingesting cannabis products and becoming ill, researchers say.

Researchers find nearly 1 out of 10 marijuana edibles use the exact or similar branding as common snack products, including candy and chips.