On average, women diagnosed with attention-deficit/hyperactivity disorder died almost nine years earlier, while men died almost seven years earlier, the U.K. study found.

A large study of 30,000 adults diagnosed with ADHD in the U.K. found women with ADHD died roughly nine years younger than women without a diagnosis. Men had about a seven-year shorter lifespan.

Learn more about why adults with ADHD may see a decreased life expectancy and why better treatment options need to be available.