Hi @tundevet, thanks for paying close attention to the post. Yes, I did insinuate that a relative and close family member who is particularly high on one of the prevailing mental conditions could cause a child to be born with autism. And then, about the chemical imbalance, it's related to the genetic defect. Vaccines are the only external substances theorized to cause autism. And then, this in itself is an hypothesis. Thanks a lot for reading dear