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A chemical found in marijuana, known as tetrahydrocannabinol, or THC, has been found to potentially slow the process in which mental decline can occur in…

As marijuana legalization gains momentum in the United States, researchers worry about keeping the public safe, particularly on the roads. Recent studies have identified new…

Several studies have shown an association between legalizing medical marijuana and lower death rates from opioids. A new study finds that link is more complex…

Recent results indicate that the effects of recreational marijuana legalization on Oregon teens’ use depends on whether the teens were already using marijuana when legal…

While cigarette smoking has declined in the US for the past several decades, since 2002 the prevalence of smoking has increased significantly among people with…

Marijuana use — by either men or women — does not appear to lower a couple’s chances of getting pregnant, according to a new study.

With states rapidly legalizing cannabis for medicinal and recreational use, physicians will be increasingly pressed to counsel patients on their frequency of use and dosage,…

A study of four medical marijuana outlets in California suggests that many of their customers don’t fit the profile expected for businesses focused on sick…

A new study found cannabis therapy is safe and efficacious for elderly patients who are seeking to address cancer symptoms, Parkinson’s disease, post-traumatic stress disorder,…

US drivers are more likely to be in a fatal traffic crash during the annual April 20 cannabis celebration. Twenty-five years’ worth of data from…

A new medical guideline suggests Canada’s family physicians should take a sober second thought before prescribing medical cannabis to most patients.

Two papers published today look at the current evidence of the effects of medical marijuana laws and conclude there is little support that such laws…

Individuals who report having resolved a problem with cannabis use appear to have done so at younger ages than those who resolved problems with alcohol…

Smoking at least ten cigarettes a day is linked to a higher risk of psychoses compared to non-smoking young people. The risk is also raised…

Coffee affects your metabolism in dozens of other ways besides waking you up, including your metabolism of neurotransmitters typically linked to cannabis, a study reports.…

Researchers found marijuana shopping searches nearly tripled in the United States from 2005 to 2017, peaking between 1.4 and 2.4 million searches each month. Mail-order…

While cigarette smoking is declining, marijuana use is rising and, disproportionately, marijuana users also smoke cigarettes. Our new study reports that cannabis use was associated…

Alternative methods of pain management have been a topic of discussion as the United States grapples with the opioid and heroin epidemic. New research finds…

U.S. states that have approved medical cannabis laws saw a dramatic reduction in opioid use, according to a new study.

Few older adults use medical marijuana, a new national poll finds, but the majority support its use if a doctor recommends it, and might talk…

Few older adults use medical marijuana, a new national poll finds, but the majority support its use if a doctor recommends it, and might talk…

Medical cannabis and synthetic marijuana extracts should not be used for the treatment of obstructive sleep apnea, according to a position statement from the American…

Can medical marijuana help to fight the opioid epidemic? Many believe that it can. But a new study finds that people who use medical marijuana…

Managing symptoms such as pain, nausea, and psychiatric illness can be challenging as people age. A new review highlights what’s currently known about the indications…

In a first-of-a-kind study, scientists examined how peoples’ self-reported levels of stress, anxiety and depression were affected by smoking different strains and quantities of cannabis…

A preclinical study in rats has shown that there might be value in using a non-psychoactive and non-addictive ingredient of the Cannabis sativa plant to…

New research indicates that opioid misuse and the use of cannabis and other drugs may compromise the effectiveness of treatments for alcohol use disorder.

Researchers have developed a new method of measuring phytocannabinoids — the primary bioactive molecules in cannabis — that will lead to faster, safer and more…

With marijuana use during pregnancy on the rise, a new study shows that prenatal cannabis use was associated with a 50 percent increased likelihood of…

Researchers have developed a prototype app called ‘Am I Stoned’ that could help cannabis users understand how the drug is affecting them through a series…

A study shows up to 65 percent of older adults who use medical marijuana significantly reduced their chronic pain and dependence on opioid painkillers.

Marijuana is the most commonly used illicit substance in the US. Secondhand marijuana smoke (SHMS) exposure and its subsequent impact on child health have not…

Researchers find that boys who start smoking pot before 15 are much more likely to have a drug problem at 28 than those who start…

More young people are turning to marijuana as their first substance of choice, rather than smoking cigarettes or drinking alcohol, an expert says. He says…

As prohibitions on the sale and use of marijuana ease, one result is more advertising about cannabis. A new study suggests that may have consequences…

Smoking during pregnancy has well-documented negative effects on birth weight in infants and is linked to several childhood health problems. Now, researchers have found that…

Cannabis use increased among parents who smoke cigarettes, as well as among non-smoking parents, according to a new study. Cannabis use was nearly four times more…

While a wide majority of oncologists do not feel informed enough about medical marijuana’s utility to make clinical recommendations, most do in fact conduct discussions…

Pregnancy and birth rates continue to decline for 15-19-year-olds in Minnesota, with rates decreasing the most among youth from communities of color. Researchers attribute the…

Results from some of the first studies to examine hemp’s ability to fight cancer show that it might one day be useful as plant-based treatment…