Omega-3 supplementation increases brain-derived neurotrophic factor (BDNF) levels in the blood.

noli's read

The creator relies on a meta-analysis of randomized controlled trials (RCTs), which constitutes the most robust level of evidence in nutrition. Research indeed confirms a positive correlation between omega-3 (EPA/DHA) intake and the elevation of BDNF, a key protein for brain plasticity and neuronal support. However, it should be noted that BDNF circulating in the blood does not always perfectly reflect the actual concentration in the brain, although it is used as an indirect biomarker. The magnitude of this effect can vary considerably depending on the dosage, the duration of supplementation, and the initial health status of the participants. This is not an immediate 'miracle,' but rather metabolic support that is part of a comprehensive approach to cognitive health. The link is scientifically supported, while remaining one biological measure among others for assessing brain health.

the sources

No named source held this one up — that absence is part of the verdict.