A substance known as kratom is becoming increasingly common in smoke shops and convenience stores across California, prompting concern from some public health advocates about newer, more concentrated products derived

A growing number of Americans report they are unable to quit or cut down.

Brands selling intoxicating hemp products are rarely warning about health risks or age limits, according to a new study.

Carlos Dominguez started legally using cannabis at age 19. Four years later and with schizophrenia, he went on a stabbing spree in Davis.

Congress is trying to delay a law that would effectively kill the $28 billion intoxicating hemp industry.

Using marijuana doubles the risk of dying from heart disease, especially from stroke and heart attacks, a large new study found.

A JAMA Health Forum study of 463,396 teens found cannabis use doubles the risk of psychosis and bipolar disorder. Cannabis typically preceded psychiatric diagnosis by 1.7–2.3 years.

Review reveals rise in users and rates of psychosis in countries where cannabis is sold commercially

Gov. Abigail Spanberger on Tuesday vetoed legislation that would have created Virginia’s long-delayed adult-use cannabis retail market, halting an effort lawmakers spent months negotiating five years ...

A federal lawsuit accuses three big cannabis companies of lying about pot’s medical benefits and hiding its serious harms.

Analysis of data from 11,000 youth shows slower cognitive progress for those who used cannabis

OPINION – California voters were promised something simple and reasonable when they approved cannabis legalization under Proposition 64: a tightly regulated industry that would fund youth programs, pr...

Cannabis marketing exposure has been shown to influence use among youth by increasing positive cannabis perceptions and interest. However, little is known about what specific cannabis advertising f...

A study found cannabis use was associated with a doubled risk of psychotic and bipolar disorders.

EUREKA, Calif. — A recent study conducted by the Kaiser Permanente Research Institute suggests that teenagers who use cannabis may face a higher risk of developing certain mental health conditions

A new study published in the Journal of the American Medical Association associates adolescent cannabis use with increased risk for serious mental health conditions.

Researchers followed more than 400,000 teens until they were adults. It found that those who used marijuana were more likely to develop serious mental illness, as well as depression and anxiety.

This cohort study assesses the association of past-year cannabis use by adolescents with the risk of incident psychiatric, bipolar, depressive, and anxiety disorders by age 26 years.