Is sugar secretly destroying your brain through inflammation? The wellness internet says yes—but what does the actual research show? We examine the explosive claim that sugar causes inflammation, triggering brain fog and weight gain, only to discover a critical gap: the observational studies showing correlation are full of confounders, while the controlled trials testing causation either found the opposite effect or simply don't exist. The inflammatory pathway is plausible in mice, but vanishes in human studies. And "brain fog" itself has never been tested as an outcome of sugar consumption. Discover why the tidy mechanism everyone believes—sugar causes this, which causes that—hasn't actually been demonstrated in healthy humans, and what the evidence really suggests about why reducing sugar might actually help.

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