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DHA

A long-chain omega-3 concentrated in brain and retinal membranes.

Established functions

  • A long-chain omega-3 concentrated in brain and retinal membranes.

Dietary sources

  • tuna
  • yellowtail
  • eggs

Claims and evidence

Japanese reference amounts

  • Japanese adults (age and sex as specified): Adult dietary goal: at least 1 g/day EPA+DHA

Amounts studied

  • Pregnancy studies used algal or fish-oil DHA 200–600 mg/day from mid-pregnancy to delivery

Tolerable upper limits

  • No separate UL; assess combined EPA+DHA and bleeding risk

Forms and bioavailability

Supplement forms: algal DHA triglyceride, fish-oil DHA

  • Algal oil supplies DHA without fish; dietary fat improves absorption.

Safety and interactions

Adverse effects

  • burping
  • gastrointestinal symptoms
  • bleeding tendency

Medicine and nutrient interactions

  • anticoagulants, antiplatelets

Contraindications and cautions

  • In pregnancy avoid vitamin-A-rich liver oils and choose contaminant-tested products.

Practical selection

  • Compare DHA amount per serving, form, allergens, and batch testing; prefer a single-ingredient product suited to the intended use.

Sources and review

Daiki Minaki (editorial and evidence review) ·

Frequently asked questions

How is DHA different from its broader supplement category?

A long-chain omega-3 concentrated in brain and retinal membranes. Compare its named form and amount rather than assuming every category product supplies it.

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What safety detail matters specifically for DHA?

anticoagulants, antiplatelets In pregnancy avoid vitamin-A-rich liver oils and choose contaminant-tested products.

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