BOSTON, March 4 (UPI) -- A U.S. study finds stimulant drugs used to treat children with attention deficit hyperactivity disorder has no effect on future substance abuse risk.

ATLANTA, May 25 (UPI) -- A Harvard Medical School study suggests teenage girls with attention deficit/hyperactivity disorder have a higher risk of developing mental illness by age 17.

WASHINGTON, May 24 (UPI) -- Survey results released Monday suggest untreated attention-deficit hyperactivity disorder in adults may be one of the costliest medical conditions in the United States -- accounting for nearly $77 billion in lost income each year.

WASHINGTON, May 23 (UPI) -- A new study suggests untreated attention-deficit hyperactivity disorder in U.S. adults may account for nearly $77 billion in lost income each year.

ATLANTA, May 23 (UPI) -- People who suffer from attention-deficit hyperactivity disorder lose an estimated $77 billion in income a year, a U.S. researcher said Monday.

NEW YORK, Sept. 9 (UPI) -- Attention deficit hyperactivity disorder in American adults costs $77 billion a year in lost income, a study released Thursday indicated.

A new technique can accurately detect metastatic disease; single dose of timed-release medication works well in children with attention deficit disorder, and other news of modern health.

BOSTON, Aug. 5 (UPI) -- A reformulated and longer-lasting drug helps children with attention deficit hyperactivity disorder who struggle to comply with their current treatment schedules, a new study announced Monday reveals.