trauma makes the predisposition to it come forth

genetics still plays an important role itself, due to gene expression.

just like gestational exposure of air pollution to a mother can increase the odds of autism spectrum disorder.

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Causes of ADHD

Brain injury.

Exposure to environmental risks (e.g., lead) during pregnancy or at a young age.

Alcohol and tobacco use during pregnancy.

Premature delivery.

Low birth weight.

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https://www.cdc.gov/ncbddd/adhd/facts.html

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lemme tell you traumatic brain injuries suck

had one at 9, 17, 20 and a huge one at 37 (the perils of being a lumberjack. no one gets out of that industry unscarred unless they only work one day).

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Prenatal exposure to polycyclic aromatic hydrocarbons, or PAH, a component of air pollution, raises the odds of behavior problems associated with attention deficit hyperactivity disorder, or ADHD, at age 9, according to researchers at the Columbia Center for Children's Environmental Health at the Mailman School of ...Nov 5, 2014

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https://www.publichealth.columbia.edu/public-health-now/news/adhd-air-pollution-link

boys tend to have the greatest risk of inheriting or ending up adhd

air pollution is liable to be one of the main causes of why so many more kids are being born neurodivergent

never mind all the chemicals in the water, especially here in illinois with the coal ash and pesticides/herbicides which end up back in the water supplies (this is also why kidney disease is the largest death machine in illinois)

brains are sensitive organs. it does not take much to mess them up

and ptsd/cptsd/neglect/sexual abuse/physical abuse can mess up a young mind like a grenade will mess up an apple tree