# The \#1 Nutrient For Brain Health (It's Not Even Close)

- Channel: [Nick Norwitz MD PhD](https://www.youtube.com/channel/UCLTZUJSEulehPtF_ytFiU_A)
- Published: 2026-05-26
- Source video: [Watch on YouTube](https://youtube.com/watch?v=dgGNk7jUv50)
- Read on ReadTube: https://www.read.tube/p/videos/dgGNk7jUv50
- Language: Original (source language)

## Summary

**DHA Urged for Brain Health**

DHA is presented as the top nutrient for brain health, especially for people at high genetic risk for Alzheimer’s disease. The video argues that APOE4 carriers may burn through DHA faster, making early and sustained intake crucial before brain pathology takes hold.

DHA is framed as the most important nutrient for the brain because it is a core structural fat in gray matter and myelin, and it also supports glucose metabolism, BDNF, and anti-inflammatory signaling. The speaker connects this to his own APOE4 status and argues that Alzheimer’s disease begins long before symptoms, with lipid metabolism declining early and setting the stage for later amyloid, tau, and cognitive decline.

A major theme is that APOE4 carriers may both lose DHA faster and, when young and cognitively healthy, show increased DHA uptake as a possible compensation. The speaker interprets this as a reason to emphasize prevention rather than treatment after decline begins, since DHA trials may fail when given too late. He also explains how APOE4 may shift lipid processing toward more inflammatory omega-6 pathways, while omega-3 pathways generate resolving mediators that help protect the brain.

He then outlines his personal protocol, which includes daily low-mercury fatty fish such as sardines and sockeye salmon, avoidance of industrial seed oils, and regular testing of omega-3 status and the omega-6:3 balance. He also takes a specialized form of DHA, LPC-DHA, along with a minimum target of 2,000 mg combined EPA and DHA per day, plus microdose lithium orotate and consideration of NAD-boosting strategies for older adults. The overall message is that genetics cannot be changed, but diet and supplementation may help preserve brain health if started early and kept consistent.