Causes of ADHD
Attention deficit hyperactivity disorder does not have a single cause as research suggests that is more of a combination of multiple factors. The main causes are:
1.
Genetics
Genes play a large role
in ADHD. Studies show that children with parents or siblings who have
ADHD are at higher risk.
- Multiple genes working together, not just one.
- Some genes can increase the risk for ADHD and
other disorders like autism.
- Genes affecting dopamine and other
neurotransmitters influence ADHD.
- Genetics can affect sensitivity to
environmental risks like smoking during pregnancy.
- Even with all this knowledge there no specific gene test available to diagnose ADHD
2.Brain Structure
Certain parts of the
brain, like the frontal cortex may be smaller or function differently in
people with ADHD. These areas are responsible for attention, impulse
control, and functioning.
- Dopamine and norepinephrine neurotransmitters
may function differently.
- These differences help explain why people with
ADHD struggle to maintain focus and control impulsive behavior.
3.Environment
Environmental factors also contribute to ADHD:
- Low birth weight or severe early deprivation.
- Exposure to smoking or stress during pregnancy (may interact with genetics)
Genes and environment
work together. A child with genetic risk may be more sensitive to
environmental stress, increasing the severity of symptoms.