Immune abnormalities in patients with autism.

Doctors looked at white-blood-cell tests from 31 autistic patients. They counted T-cells and checked how well the cells responded to germs.

Most patients had weak lymphocyte responses and odd T-cell ratios. The numbers were outside the normal lab range, but the kids did not look sick.

Schneider et al. (2006) later pooled many papers and still saw these immune quirks, so the 1986 picture held up.

Zhou et al. (2018) moved the lens to the gut and found high stool IgA, showing the immune story also lives in the intestines.

Miot et al. (2023) tracked adults with ASD plus ID and found that immune-gut problems cluster together for years, proving the 1986 signal lasts into adulthood.

You cannot fix immune cells with ABA, but knowing these patterns helps you read medical charts and advocate for GI or allergy work-ups when problem behavior spikes. Share the 1986 findings with the child’s doctor if frequent illness or gut issues show up. It gives the team a biologic reason to look deeper instead of blaming "autism behaviors" alone.