You are on the right trail once you get into porphyria.
Any overgrowth (the endotoxins) can lead to a higher level of porphyria.
Includes: chlamydia, Lyme's, Candida, protozoan parasites.
See at wellatlast dot com
Porphyria is the key.
You are on the right track.
Please look for the link between autism and porphyria. especially if mercury compounds were involved.
See wellatlast dot com
If one then has mercury-induced porphyria, one then react to many foods, env. chemicals, EMF, drugs, vitamins etc. Many reactions may occur due to Cytochrome P450 deficiency/defect.