Nutrient Database

DHA

fatty acid

Approved

General information about nutrients. No diagnosis, no medical advice. If you take medication, are pregnant or have a medical condition, talk to your doctor before taking supplements.

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Overview

Omega-3 fatty acid, the main omega-3 in the brain. DHA contributes to maintenance of normal brain function. DHA contributes to the maintenance of normal vision.

Research status

Primary structural omega-3 in brain and retina.

Top 5 food sources

Salmonmackerelsardinestroutoysters

Expert opinions

Dr. Peter Attia

Attia writes that he targets a red-blood-cell EPA + DHA level (omega-3 index) of at least 8 % in his patients, ideally above 10 %. This is a blood-level target, not a daily dose.

Source: Peter Attia on X (@PeterAttiaMD) · as of 2021-04-24

Bryan Johnson Blueprint

Johnson takes approximately 1.2 g DHA within a total 2 to 3 g omega-3 daily. DHA contributes to maintenance of normal brain function. DHA contributes to the maintenance of normal vision. Paired with EPA and with phosphatidylcholine/choline for membrane synthesis. Omega-3 index and DHA-specific RBC fatty-acid panels are tracked to confirm incorporation.

Recommended dose: 500+ mg DHA

Source: Blueprint Protocol

Dr. Rhonda Patrick

Patrick recommends 1 to 2 g DHA daily and uses the omega-3 index as the actionable biomarker, targeting ≥8 %. She notes that phospholipid-form DHA (krill, roe) may cross the blood-brain barrier more efficiently than the triglyceride form in APOE4 carriers.

Recommended dose: 500+ mg DHA

Source: FoundMyFitness

Expert profiles summarise publicly available statements. The named people do not cooperate with Stackwell and have not authorised these summaries. Not medical advice.

Expert consensus: Strong

Algae-based forms available for vegans.

DHA — Stackwell