Some people think hormonal birth control is linked to autism.
Freegards
As the prevalence of ASD has risen in the last sixty years, so has the prevalence of the usage of the oral contraceptives and other modern hormonal delivery methods.
https://www.sciencedirect.com/science/article/pii/S0306987714003521
Would not be surprised.
Was my thought too - lots use extra estrogen as a main ingredient....and they aren’t so effective as to prevent all pregnancies which would have some pregnant women with very elevated levels.