to date there is insufficient evidence from mechanistic human studies to make conclusions about causality between a specific diet and microbially mediated brain function.
That's because there's not a straight line between correlation and causation. The controlled experiments haven't been done yet. But that's not all there is to science.
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tldr:
A line from the abstract is not a fair summary of this article
That's because there's not a straight line between correlation and causation. The controlled experiments haven't been done yet. But that's not all there is to science.