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I wonder how two identical twins with the same DNA might not both have autism. If it is environmental, having different gut flora seems more like an effect rather than a root cause since twin babies are usually given identical foods.

I think it would be really ironic if the cure for autism was a vaccine though.

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My partner and I, from two different continents and two vastly different ecosystems, both come from generationally autistic families. So excuse my skepticism.

Yes, gut flora is definitely disrupted in people with ASD. But it's a real long stretch to suggest it's the cause.

I also think there is probably not a single cause for either ASD or ADHD -- there is probably both a genetic component and an environmental component involved. At the same time, it's very hard to tease these things apart, especially with whether the microbiome plays a role because that too is significantly hereditary.

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