Risk factors for ADHD may include:

  • Blood relatives (such as a parent or sibling) with ADHD or another mental health disorder
  • Exposure to environmental toxins — such as lead, found mainly in paint and pipes in older buildings
  • Maternal drug use, alcohol use or smoking during pregnancy
  • Maternal exposure to environmental poisons — such as polychlorinated biphenyls (PCBs) — during pregnancy
  • Premature birth

Although sugar is a popular suspect in causing hyperactivity, there's no reliable proof of this. Many things in childhood can lead to difficulty sustaining attention, but that is not the same as ADHD.

Mar. 05, 2013