In fact, those who are pregnant and using cannabis may actually distrust the content of warning signs altogether. "Mandatory ...

A study published in the Journal of Studies on Alcohol and Drugs suggested that mandatory warning signs at dispensaries about the potential health risks of cannabis use in pregnancy may not be ...

A lit cigarette burns on a package of cigarettes revealing the mandatory warning labels, in the 1960s. Credit - Bettmann Archive/Getty Images Vocal opponents of the tobacco industry, such as Sens.

In fact, those who are pregnant and using cannabis may actually distrust the content of warning signs altogether. "Mandatory ...