The Justice Department reclassified marijuana as a Schedule III drug, a shift that affects research and taxes but not legalization ...

Cannabis use has become more prevalent as legalization and decriminalization make it more accessible. While some studies show that cannabis could have some benefits, research also indicates that ...

The government recently loosened medical marijuana rules. Experts separate fact from fiction about the drug’s safety and ...

Your recent article on permitting recreational cannabis sales mentions that a second pot store will be allowed to open a block from Lincoln Middle School. There is an epidemic of cannabis abuse by ...

Add Yahoo as a preferred source to see more of our stories on Google. Photo illustration: Celina Pereira for Yahoo News; photo: Getty Images When Naomi's daughter was 14, she had her first encounter ...

A new study confirms the robust link between cannabis use and schizophrenia among men and women but suggests that young men may be especially susceptible to schizophrenia from cannabis abuse. Of note, ...

Even in states, from Maine to California, that have legalized cannabis, researchers have published paper after paper showing its risks, particularly to heavy or daily users. I do not mean the munchies ...

A Yale-led analysis of the genomes of more than 1 million people has shed light on the underlying biology of cannabis use disorder and its links to psychiatric disorders, abuse of other substances ...

Acting Attorney General Todd Blanche made a sweeping change to marijuana policy on April 23, when he signed an order ...

Cannabis use during adolescence and young adulthood was linked to lower academic performance, a systematic review and meta-analysis suggested. Among 63 studies that comprised 438,329 participants, ...

Sean Noble scraps plan to challenge Arizona's recreational marijuana law, citing changing political climate and federal reclassification.