Comment by austin-cheney

1) Serotonin reception explained - https://balancewomenshealth.com/wp-content/uploads/2020/03/T...

2) Serotonin and ADHD - https://pubmed.ncbi.nlm.nih.gov/25684070/

3) Dopamine cycle explained in context of ADHD - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2626918/

4) ADHD and sugar explained - https://www.verywellmind.com/the-sugar-and-adhd-relationship...

5) ADHD and sugar study - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3133757/

That last one mentioned coloring agents multiple times. Different research has show artificial colors, as derived from petro-chemical processing like reds and yellows, are strongly linked with neurotransmitter disruption in all people, but the effect is an order of magnitude more significant in high risk children.