Typical American families run on the unspoken motto, "If Mamma's not happy, then nobody's happy." Can a depressed, expecting mom distress the health of her unborn child?

Can smoking while pregnant cause genetic changes which make the child more at risk for asthma development? Researchers answer with a resounding, "yes."

Ureaplasma bacteria, a primitive infection not normally tested for unless women are seeking fertility treatments, can also be passed from mother to child.

Since the early 1980s taking Tylenol (acetaminophen) has become increasingly common among women during pregnancy.  This increase coincided with a doubling of the prevalence of asthma among children.

Babies born prematurely face an increased risk of many health complications, including death. Even if a newborn's lungs are fully developed, the increased risk of death remains, according to a new study.