Dietary sugar intake directly feeds and accelerates infections
Evidence indicates that high dietary sugar intake contributes to metabolic inflammation and alters immune and inflammatory responses associated with infection susceptibility.
The provided papers support the link between dietary sugar/fructose intake, metabolic dysregulation, and altered immune or inflammatory responses that increase infection risk, leading to a SUPPORTED verdict.
Hugo Charles-Messance, K. Mitchelson, E. de Marco Castro, Frederick J. Sheedy, H. Roche. Regulating metabolic inflammation by nutritional modulation.. 2020. https://doi.org/10.1016/j.jaci.2020.08.013
Paper [0] notes that adverse dietary factors including certain sugars drive metaflammation and that obese diabetic patients with metabolic disorders have a higher risk of infection.
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Raphaela Staltner, Katja Csarmann, Amelie Geyer, Anika Nier, Anja Baumann, Ina Bergheim. Fructose intake enhances lipoteichoic acid-mediated immune response in monocytes of healthy humans.. 2025. https://doi.org/10.1016/j.redox.2025.103729
Paper [7] demonstrates that dietary fructose intake enhances bacterial toxin-induced immune responses and alters inflammatory cytokine release in humans.
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