Could the vitamin D in mom's diet during pregnancy affect her children's future health? Regarding asthma, that question might have been answered.

Asthma rates of children in the US have risen steadily over the past 30 years, but specific causes for the increase have remained unclear.

Secondhand smoke can be harmful to children. But it may also harm children before they're even born.

There’s an established and complex link between asthma and obesity. But which one comes first in children?