Is it genes or is it the environment? or is it a combination? This question has plagued researchers and scientists and caused a lot of confusion in families about what caused their own or their child’s ASD. This week we review the mechanisms by which de-novo mutations could be the work of gene x environment interactions, and share new evidence of how SSRI’s do or don’t contribute to ASD through gene x environment interactions. We also want to recognize the valuable work of scientist Li-Ching Lee to these efforts. Dr. Lee recently passed away but will be sorely missed. https://pubmed.ncbi.nlm.nih.gov/34002022/ https://pubmed.ncbi.nlm.nih.gov/34116791/