Researchers examine the effectiveness of consuming hemp oil extracted from the whole cannabis plant using a chronic neuropathic pain animal model. Researchers showed that legal cannabis hemp oil reduced mechanical pain sensitivity 10-fold for several hours in mice with chronic post-operative neuropathic pain.

The optimal minimum legal age for non-medical cannabis use is 19 years of age, according to a new study.

Taking antibiotics alongside opioids may increase the risk of opioid abuse, according to research in rats.

Health practitioners are constantly developing new ways to help those with drug and alcohol addictions wean themselves from their substance of choice. Most such programs have limited success, however. A new study finds that interventions that take a multidimensional approach -- tackling the biological, social, environmental and mental health obstacles to overcome while also addressing a person's substance use -- work best for those hoping to stop using drugs.

A new study explains how cocaine modifies functions in the brain revealing a potential target for therapies aimed at treating cocaine addiction.

Cannabis use makes young brains more sensitive to the first exposure to cocaine, according to a new study on rodents. By monitoring the brains of both adolescent and adult rats after giving them synthetic psychoactive cannabinoids followed by cocaine, the research team identified key molecular and epigenetic changes that occurred in the brains of adolescents -- but not adults.

Scientists have discovered a new role for the brain chemical dopamine that is independent of classic neurotransmission. The new role appears to be critical to changes in gene expression related to chronic exposure to, or abuse of, cocaine.

Medical marijuana users who say they have high levels of pain are more likely than those with low pain to say they use cannabis three or more times a day, a new study finds. However, daily marijuana users with severe pain also reported their health had become worse in the past year.

Female eggs exposed to THC, the psychoactive ingredient in marijuana, have an impaired ability to produce viable embryos, and are significantly less likely to result in a viable pregnancy, according to an animal study.

Those who consume alcohol and drive are often subjected to roadside stops, breathalyzer tests and stiff penalties if their blood alcohol content exceeds certain limits. Currently, no such test exists for cannabis intoxication, although the substance can impair driving. Now, scientists report a convenient saliva test for cannabis levels that might someday be used at roadside stops.

Coughing fits, anxiety and paranoia are three of the most common adverse reactions to cannabis, according to a recent study.

More than 90% of the legal marijuana products offered in medical dispensaries are much stronger than what clinical studies have shown that doctors recommend for chronic pain relief, according to a new study.

Researchers found that white males ages 30 to 39 were most at risk of fatal overdoses in Ohio. The study also identified 12 clusters in the state where overdose rates were highest.

Children and teens with epilepsy who were treated with pharmaceutical cannabidiol (CBD) had much better seizure control than those who were treated with artisanal CBD, according to a preliminary study.

The research team found that CBG had antibacterial activity against drug-resistant MRSA. It prevented the ability of that bacteria to form biofilms, which are communities of microorganisms that attach to each other and to surfaces; and it destroyed preformed biofilms and cells resistant to antibiotics. CBG achieved this by targeting the cell membrane of the bacteria. These findings in the laboratory were supported when mice with an MRSA infection were given CBG.

Adolescents who are bullied about their weight or body shape may be more likely to use alcohol or marijuana than those who are not bullied, according to new research.

A common variation in a human gene that affects the brain's reward processing circuit increases vulnerability to the rewarding effects of the main psychoactive ingredient of cannabis in adolescent females, but not males, according to preclinical research. As adolescence represents a highly sensitive period of brain development with the highest risk for initiating cannabis use, these findings in mice have important implications for understanding the influence of genetics on cannabis dependence in humans.

Few cannabis consumers understand what the THC numbers on packages of cannabis edibles really mean, according to a new study. The study, which surveyed nearly 1,000 Canadians aged 16 to 30, found that most consumers could not identify whether a cannabis edible contained 'low' or 'high' levels of THC based on the label.

Steroids should be avoided in the treatment of the current novel coronavirus, experts have advised. A commentary article published in The Lancet concludes that, based on evidence from previous outbreaks of similar types of infection such as SARS, steroids provide little benefit to patients and could do more harm than good. They say that clinicians should still administer the treatment for conditions such as asthma and other inflammatory diseases.

An experimental fingerprint detection approach can identify traces of cocaine on human skin, even after someone has washed their hands -- and the test is also smart enough to tell whether an individual has actually consumed the class A drug, or simply handled it.