PST
מתוך המדריך של קירקמן: Phenol sulfotransferase (PST) is an enzyme system that is normally involved in Phase II liver detoxification. Researchers have proposed that PST is compromised in autistic children.20 A recent study performed by Rosemary Waring in England demonstrated that the PST enzyme system was functioning at sub-optimal levels in more than half of the autistic children tested.21 The result of a PST system that is not functioning normally is a deficiency of sulfur in the bloodstream, which was shown to be the case in the majority of autistic children evaluated in another study by Waring.22 Since the deficiency of sulfur in the bloodstream and impairment of the PST system interferes with the body’s ability to process and eliminate phenols, this may explain why many children with autism are so sensitive to phenols ingested through certain foods. These phenol-containing foods include apples, bananas, grapes, chocolate, food colorings, and some herbs and spices
