Below is part of an article writeen by Bernard Rimland in 1988 regarding autism/yeast connection.http://autism.com/ari/editorials/candida.html
Bernard Rimland, Ph.D.
Autism Research Institute
4182 Adams Avenue
San Diego, CA 92116
Candida albicans is a yeast-like fungus which inhabits almost all humans. It lives on the moist dark mucous membranes which line the mouth, vagina and intestinal tract. Ordinarily it exists only in small colonies, prevented from growing too rapidly by the human host's immune system, and by competition from other microorganisms in and on the body's mucous membranes. When something happens to upset this delicate natural balance, candida can grow rapidly and aggressively, causing many unpleasant symptoms to the host. Some of the symptoms are widely known and acknowledged. Vaginal yeast infections, primarily caused by candida, present the most common case in point. Thrush, the white yeast infection of the mouth and tongue which is common in infants, is another well-known example of candida overgrowth.
In recent years a minority of physicians have begun to try to persuade their colleagues, and the public, that candida may present consequences far more devastating to human well-being than vaginitis and thrush. They cite Japanese studies showing that candida is able to produce toxins which cause severe long-term disruption of the immune system and may also attack the brain. In extreme cases, they claim, severe disorders, totally resistant to conventional treatment, can occur as a result of candidiasis. These include depression, schizophrenia and, in some cases, autism.