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 as early ...

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 ...

The first trimester of pregnancy lasts from weeks 1 through 12. During the first trimester, the fetus will grow to about the size of a lime. Common symptoms during your first trimester include tender ...

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 ...