The marijuana compound THC may be linked to improved memory during aging, a new study in older mice finds.
Marijuana is an age-old drug made from parts of the Cannabis plant. It contains the mind-altering chemical tetrahydrocannabinol, or THC. Several countries, and a number of U.S. states, have legalized the drug for medical or recreational purposes. Here's the latest news on marijuana, from how it affects the brain and body, to its potential medical benefits or harms, to possible impacts of legalization.
The number of marijuana-related ER visits made by teens and young adults more than quadrupled at one Colorado hospital after the state legalized the drug.
In recent years, illegal marijuana use has risen faster in states that have legalized medical marijuana than in states without such laws, a new study finds.
Though there are many urban legends out there, the origins of 4/20 as an international holiday to smoke marijuana are shrouded in a haze of smoke, naturally.
The findings of the new study could have implications for helping people quit smoking, the researchers said.
Cannabidiol could be used in addition to talk therapy to treat anxiety disorders, researchers say, although more study of the compound is needed.
A new long-term study could show scientists how first exposures to marijuana affect the teenage brain.
Teens who use marijuana don't behave in quite such risky ways as teens who use synthetic cannabis, a new study finds.
Adults who use marijuana may have an increased risk of stroke and heart failure, according to a new study.
As marijuana use becomes increasingly legal, researchers need to explore new ways to make the drug safer for people to use, some experts say.
Synthetic marijuana compounds, sometimes called K2 or Spice, are actually chemically different from marijuana, and are more dangerous, according to a new review.
A marijuana ingredient may help heroin users resist the urge to use the drug and alleviate withdrawal symptoms, but more research should be done in this area, researchers say.
Many anecdotal reports suggest cannabis can help alleviate MS symptoms, but research with cannabis is difficult to carry out.
Older Americans are among the fastest growing groups of pot users, and now researchers are trying to figure out why.
A middle-age man in Canada with oral cancer found that medical cannabis oil may have helped to slightly reduce the size of a wound on his cheek.
Are there more or fewer doctors than ever before? How many people are really smoking weed? Are people opting for the flu vaccine in greater numbers?
From the elimination of measles in the U.S. to the advance of potential new treatments for Alzheimer's disease, 2016 was a jam-packed year for health news.