ADD | ADHD

Harvard University Study Links ADHD and LDs to Toxic Chemicals (2014)   Six new chemicals are linked to neurotoxicity, Autism, ADHD, and Dyslexia: Manganese diminishes intellectual function and impairs motor skills; fluoride; chlorpyrifos and DDT (pesticides) may cause cognitive delays; tetrachloroethylene - solvents are are linked to hyperactivity and aggressive behavior; and polybrominated diphenyl ethers (flame retardants). 

Dyscalculia and ADHD (Totally ADD blog, 1-7-2020) 

ADD| ADHD Attention Deficit Hyperactivity Disorder: Home-School Management a paper by Renee M. Newman (1998)