(CNN) — If you are pregnant and use any form of cannabis product, consider stopping. That's the takeaway from a new study that found a significant health impact of marijuana use on fetal development ...

Findings suggest early pregnancy may be a critical window for maternal vitamin D in supporting fetal growth and reducing preterm birth risk Study: Maternal vitamin D status, fetal growth patterns, and ...

Babies exposed to pollution, especially vehicle exhaust, during the first trimester of pregnancy had worse language skills at 18 months, according to a study. The research, published in the Journal of ...