Rhonda Patrick· PhD
Just 20 minutes of exercise increases serum BDNF levels by 32% in humans...
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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.
Just 20 minutes of exercise increases serum BDNF levels by 32% in humans...
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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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physical activity resulted in an average 32% increase in serum BDNF levels compared to baseline and that resulted in about a forty-five percent increase compared to controlled conditions
the more intense the exercise, the more BDNF that you're going to make.