Dr. Greyson studies what people do with health information, and when this matters for health and social equity. In both the USA and Canada, cannabis (marijuana) is the most commonly used drug in pregnancy, both recreationally and for pregnancy-related ailments such as nausea and vomiting. Although research has found connections between prenatal cannabis smoking and some negative fetal and infant outcomes, there is still uncertainty regarding risks and benefits of cannabis use in pregnancy and lactation. Dr. Greyson’s study aims to understand how pregnant individuals make cannabis-use decisions amidst medical uncertainty, and how cultures, communities, and governments affect that decision-making process. The results will help clinical and public health professionals to better communicate with the public about the potential risks and benefits of cannabis use in pregnancy and lactation.