A new study finds combined use of pot edibles and alcohol leads to greater and longer-lasting driving impairment, and the combo could be missed by sobriety checks.

A large, new study finds kids who start using marijuana as teens experience slower gains in memory and thinking as they grow.

A new study involving more than 100 million people found recreational drugs like marijuana, cocaine and amphetamines significantly raise the risk of stroke – even in younger users.

A new study links spiritual or religious involvement to a significantly lower risk of harmful alcohol or drug use.

A new study finds family meals that include real conversation and fewer digital distractions lead to sharply lower rates of teen substance use.

A new study finds teens who use marijuana --- even just once or twice a month – face higher odds of poor grades, increased anxiety, aggression and low self-esteem.

A new clinical trial finds people who smoke weed drink less alcohol – at least in the short term. But researchers say the findings are preliminary and the drug should not be used as a substitute for alcohol just yet.

A new study finds more than 1 in 5 young adults are using marijuana or alcohol to help them fall asleep.

A new study finds nearly 42% of drivers killed in crashes in Ohio had high levels of THC in their blood.

National surveys conducted from 2021 to 2024 show more teens are vaping marijuana, and flavored versions are their drug of choice.

A new study finds pot users are nearly 4 times more likely to develop type 2 diabetes compared to the general public.

Marijuana products with high levels of THC increase the risk of psychosis and schizophrenia, according to a new evidence review, but their impact on anxiety and depression remains unclear.

A new study finds people with cannabis use disorder are more than three times as likely to develop oral cancer within five years.

In a new study, participants administered low doses of CBD for 28 days experienced liver enzyme elevations greater than 3 times the upper limit of normal.

A major analysis of data from 24 studies involving more than 200 million people finds those who used marijuana had significantly higher odds of acute coronary syndrome, stroke and death from heart disease.

More Americans 65 and older are using marijuana for chronic conditions like heart issues, diabetes, high blood pressure and cancer, according to a new study.