Pregnancy studies used algal or fish-oil DHA 200–600 mg/day from mid-pregnancy to delivery
Reviewed · Published
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
Claims that DHA alone prevents or treats disease, or invariably improves health without deficiency, are unsupported.
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.
View detailsWhat safety detail matters specifically for DHA?
anticoagulants, antiplatelets In pregnancy avoid vitamin-A-rich liver oils and choose contaminant-tested products.
View details