There is a hypothesis.
"Excess dietary iron is the root cause for increase in childhood Autism and allergies"
"We investigated for the first time the levels of non-protein-bound iron (NPBI)"
"NPBI levels were significantly increased (1.98- and 3.56-folds) in autistic patients"
“Hyperandrogenemia is prevalent in autistic patients and increases with autistic severity.”
“Reduction of the body iron stores can improve hyperandrogenemia”
Annnd, there is a higher than normal rate of sexual ambiguity in those with Autism.
“hyperandrogenism" "may be one of the factors contributing to the sexual orientation"