Parental reproductive problems and gestational hormonal exposure in autistic and schizophrenic children.

Funderburk et al. (1983) wrote short medical stories about autistic and schizophrenic children. They noted each child’s birth history, any fertility drugs the mother took, and family mental-health records.

The paper is a case series. It simply describes patterns; it does not prove cause.

More mothers of these children had trouble getting pregnant. They also used hormone shots or pills during early pregnancy more often than families in the doctors’ general files.

The authors list the problems but say they cannot yet blame the hormones or infertility for autism.

Gillberg et al. (1983) looked at the same year and also saw more pre-birth complications in autism, giving early support. Cryan et al. (1996) later ran a matched control study and found no extra complications—an apparent contradiction. The clash fades when you see the 1983 paper used small, hand-picked cases while the 1996 study used strict matching; the looser method likely over-counted rare events.

Peters et al. (2013) widened the lens. They linked moms’ on-the-job chemical exposures—exhaust and disinfectants—to doubled autism odds, showing the hormone idea fits a broader “outside chemicals in pregnancy” theme.

Connolly et al. (2016) and Chien et al. (2019) kept the thread alive. Obesity, diabetes, preeclampsia and six other prenatal events now predict both autism diagnosis and tougher stereotypy scores. The 1983 hunch about pregnancy environment grew into a steady risk signal.

When you take a new client’s history, ask two quick questions: “Any fertility treatments?” and “Pregnancy complications like high blood pressure or diabetes?” Positive answers don’t change the autism diagnosis, but they flag a subgroup that may show more rigid or repetitive behaviors. You can plan for extra behavior-flexibility training and share the medical risk list with the family’s physician for closer developmental watch.