GROWTH DEVELOPMENT CHILD
ADHD
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Heredity
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Structural differences in the brain
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Environmental causes
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All of the above
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Detailed explanation-1: -Causes of ADHD Recent studies link genetic factors with ADHD. In addition to genetics, scientists are studying other possible causes and risk factors including: Brain injury. Exposure to environmental risks (e.g., lead) during pregnancy or at a young age.
Detailed explanation-2: -It is not known what causes ADHD. ADHD is often seen in families, and genes appear to play a role, but other factors may contribute or make symptoms worse. For example, some environmental exposures have been linked to increased ADHD symptoms, but the evidence has been inconsistent.
Detailed explanation-3: -As you know, one trademark of ADHD is low levels of the neurotransmitter dopamine-a chemical released by nerve cells into the brain. Due to this lack of dopamine, people with ADHD are “chemically wired” to seek more, says John Ratey, M.D., professor of psychiatry at Harvard Medical School in Boston.