Rhonda Patrick· PhD
Injection with a specific probiotic strain of bacteria (called Mycobacterium vaccae) prevents inflammation in the brain caused by stress and reduces stress-induced anxiety behavior in mice.
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
Injection with a specific probiotic strain of bacteria (called Mycobacterium vaccae) prevents inflammation in the brain caused by stress and reduces stress-induced anxiety behavior in mice.
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Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
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