Your brain fog probably starts in your gut #AaronHartmanMD #BrainHealth #GutHealth #BrainFog

23 Jan 2026 · 1 min
0:52

Aaron Hartman argues that brain fog often originates in the gut, which produces 90% of your serotonin and 50% of dopamine. Even mild or invisible gut symptoms like bloating can trigger memory problems, and Parkinson's and Alzheimer's may start in the gut 20 to 30 years before diagnosis.

Questions this video answers

75% (claimed)

90% (claimed)

50% (claimed)

20–30 years before diagnosis (claimed)

Chapters

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