Rhonda Patrick· PhD
Human studies show exercise increases brain tryptophan transport, prevents formation of a neurotoxin linked to depression, increases crucial immune factors, increases BDNF, and boosts endocannabinoids and endorphins.
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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.
Human studies show exercise increases brain tryptophan transport, prevents formation of a neurotoxin linked to depression, increases crucial immune factors, increases BDNF, and boosts endocannabinoids and endorphins.
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