Hormones clearly influence a women's health, but figuring out how is a tricky business. Andrew Ostrovsky/iStockphoto.com hide caption

itoggle caption Andrew Ostrovsky/iStockphoto.com

Children under age 2 can reason abstractly, researchers say. Jandrie Lombard/iStock hide caption

itoggle caption Jandrie Lombard/iStock

Gary Mihelish and his wife now teach classes for families that are coping with mental illness. Courtesy of Gary Mihelish hide caption

itoggle caption Courtesy of Gary Mihelish

Researchers stroked babies' faces with a paintbrush while they watched the same thing happening to a baby in a video. How long the babies in the experiment watched the screen gave clues to what they were thinking. Courtesy of Maria Laura Filippetti hide caption

itoggle caption Courtesy of Maria Laura Filippetti

A hearse leaves the Deeds family home in Millboro, Va., on Tuesday, after 24-year-old Austin "Gus" Deeds died in an apparent suicide. Don Petersen/AP hide caption

itoggle caption Don Petersen/AP

President Obama has pledged millions of dollars to fuel research into understanding the workings of the human brain. Zephyr/Science Source hide caption

itoggle caption Zephyr/Science Source

When researchers at Weill Cornell Medical College scanned teenage brains, they found that the area that regulates emotional responses has to work harder to keep impulses in check. Courtesty Kristina Caudle/Developmental Neuroscience hide caption

itoggle caption Courtesty Kristina Caudle/Developmental Neuroscience

Ronald Heifetz draws on his training as a psychiatrist to coach aspiring leaders at Harvard's John F. Kennedy School of Government. Ben de la Cruz/NPR hide caption

itoggle caption Ben de la Cruz/NPR

The mental health parity law passed in 2008, but it didn't cover people in smaller health plans. iStockphoto.com hide caption

itoggle caption iStockphoto.com

In epilepsy, the normal behavior of brain neurons is disturbed. The drug valproic acid appears to help the brain replenish a key chemical, preventing seizures. David Mack/Science Source hide caption

itoggle caption David Mack/Science Source