Pregnant women who have had prior preterm births may avoid a subsequent early birth if given progestogens, which are natural or synthetic forms of progesterone, a female hormone that naturally increases during pregnancy, a Vanderbilt analysis shows.

Attention Deficit Hyperactivity Disorder (ADHD) medications do not increase the risk for heart disease or heart attack in children and young adults, according to a Vanderbilt study of 1.2 million patients taking drugs including Ritalin, Adderall, Concerta and Strattera between 1998 and 2005.