With the legalization of recreational marijuana in many states, we anticipate more women will be using and self-reporting marijuana use in pregnancy. Marijuana is the most common illicit drug used in pregnancy, with a prevalence of use ranging from 3% to 30% in various populations. Marijuana freely crosses the placenta and is found in breast milk. It may have adverse effects on both perinatal o...

BACKGROUND Marijuana potency has risen dramatically over the past two decades. In the United States, it is unclear whether state medical marijuana policies have contributed to this increase. METHODS Employing a differences-in-differences model within a mediation framework, we analyzed data on n=39,157 marijuana samples seized by law enforcement in 51 U.S. jurisdictions between 1990 and 2010, ...

OBJECTIVES This study presents information on the status and impact of medical and legalized marijuana, and the latest data on attitudes and prevalence of use since implementation of these laws. Recent reports from epidemiologists in Denver and Seattle are summarized to give the readers a sense of the changes as these laws have taken effect in their communities. METHODS The status of these la...

Approximately 15% of all couples are unable to conceive after a year and are labeled infertile. In recent years, increasing attention has been given to lifestyle factors that may impact fertility. In the United States, it is estimated that there are more than 17 million current users of marijuana with 4.6 million using marijuana almost daily. Although common, to date, little data exist on the i...

Although possession and use of marijuana is prohibited by federal law, legalization in four states (Alaska, Colorado, Oregon, and Washington) and allowance for palliation and therapy in 19 others may reposition the drug away from the fringes of society. This evolving legal environment, and growing scientific evidence of its effectiveness for select health conditions, requires assessment of the ...