Autism and brain receptors

10.1001/jamapsychiatry.2018.2728

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3890432/

BTW Fetal Alcohol Syndrome is also associated with an increase of ASD...

"In total, 401 children were diagnosed with ASD and 157 with infantile autism. No association was found between average alcohol consumption and ASD or infantile autism, respectively. For binge drinking, the adjusted hazard ratio (HR) for ASD was 0.72 [95% confidence interval (CI): 0.53-0.97] among women who binge drank once during pregnancy compared with women who did not binge drink. The corresponding HR for infantile autism was 0.61 (95% CI: 0.36-1.02). However, the HR for ASD was 0.84 (95% CI: 0.51-1.36) when restricting the analysis to first-time pregnancies conceived within 6 months of trying. No estimate was made for infantile autism due to low number of cases. No association was seen for more than one binge episode and for the timing of binge drinking."

https://www.ncbi.nlm.nih.gov/pubmed/20371506

https://academic.oup.com/ije/article/39/4/1074/791136
In this paper only a trend but NS association...