I'd like to add a little bit of water to this particular fire. I'm autistic and I've read numerous studies along this vein. In short, yes there's a strong link between gut flora and brain development however autism (and presumably ADHD) is a heterogeneous condition with a variety of interrelated causes.
Personally, I can say that this likely is a proximate cause for me as I got a bad staph infection at just a few months old and naturally I was treated by antibiotics. However, I also have quite a few genes that are associated with autism as well. So while there's an increasingly clear picture, I'd hesitate to say what exactly is and isn't a cause of being autistic.
Personally, I can say that this likely is a proximate cause for me as I got a bad staph infection at just a few months old and naturally I was treated by antibiotics. However, I also have quite a few genes that are associated with autism as well. So while there's an increasingly clear picture, I'd hesitate to say what exactly is and isn't a cause of being autistic.