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Evidence-graded guides

Every guide is labeled by evidence level so you always know what's established science, emerging research, or an open hypothesis.

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Emerging ResearchNervous System

The Brain–Skin Axis: What the Research Says About Stress and Flares

Skin and the nervous system stay in constant contact throughout life. Here's what human studies actually show about that connection — and where the evidence runs out.

9 min read

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The Brain–Skin Axis: What the Research Says About Stress and Flares