DHA
fatty acidDocosahexaenoic acid (DHA) is a long-chain polyunsaturated omega-3 fatty acid that acts as a structural component of cell membranes. It is found in high concentrations in the brain, retina, and testes. This nutrient is important for the development and ongoing function of the brain and eyes across all life stages. DHA has anti-inflammatory properties that can help reduce chronic inflammation, a factor in many health conditions. It also contributes to cardiovascular function by supporting healthy blood pressure and triglyceride levels, while aiding endothelial health. This fatty acid is primarily obtained from fatty fish or supplements like fish and algal oils. While the body can synthesize some DHA from alpha-linolenic acid (ALA), this process is often inefficient, making direct intake through diet or supplementation helpful for maintaining optimal levels.
Natural sources
Fatty fish (salmon, mackerel, tuna, sardines)AlgaeFish oilAlgal oilSome fortified foods (e.g., eggs, milk)
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Safety & Toxicity
4 safety notes
- Individuals with bleeding disorders or those on anticoagulant medications should consult a healthcare professional before use due to potential increased bleeding risk.
- People with known fish or shellfish allergies should be cautious when considering fish oil-derived DHA supplements.
- Pregnant or nursing women, or individuals with pre-existing health conditions, should consult a healthcare provider before starting DHA supplementation.
- High doses may temporarily elevate LDL ('bad') cholesterol in some individuals.
Studies
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Interactions
Positive Interactions
EPA (Eicosapentaenoic Acid)
DHA and EPA are synergistic omega-3 fatty acids, often co-administered to provide comprehensive benefits for cardiovascular health, inflammation reduction, and brain function.
Vitamin E
Vitamin E, an antioxidant, can help protect DHA and other omega-3 fatty acids from oxidation, preserving their stability and efficacy in the body.
Vitamin A
Both DHA and Vitamin A are crucial for eye health; their combined intake can support optimal vision and retinal function.
Coenzyme Q-10
DHA and CoQ10 both support cardiovascular health and cellular energy production; their combination may offer enhanced benefits for heart and mitochondrial function.
Lycopene
Lycopene, an antioxidant, can help protect DHA from oxidative damage, contributing to its stability and effectiveness in supporting cellular health.
Recommended products
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DHA: 665 mg
A broad anti-inflammatory and antioxidant softgel with meaningful DHA and well-chosen curcumin delivery. Missing EPA, curcuminoid yield, and individual fruit-polyphenol amounts reduce transparency.
Max DHA
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A high DHA softgel with clear active dosing and a focused marine-oil formula. Missing form or quality-control details keep it from being a fully transparent choice.
Omega 3 Platinum
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Best suited to heart health, with the clearest benefits coming from the disclosed active ingredients. The triglyceride-form fish oil also supplies other omega-3 fats without hiding the key EPA and DHA amounts.
Omega 3 Platinum+D
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DHA: 600 mg
Best suited to anti-inflammatory support, with the clearest benefits coming from the disclosed active ingredients. Purification or independent contaminant testing is not disclosed.
Ultra Omegas DHA/EPA
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Ultra Strength One-per-Day RxOmega-3 with Vitamin D3 25 mcg (1000IU)
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Concentrated omega-3 and vitamin D in one softgel are convenient, but duplicate DHA labeling and ethyl ester delivery weaken transparency.
Fish Oil 1400 mg
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A concentrated one-softgel dose provides strong EPA and useful DHA at good active efficiency. Ethyl ester form and limited sourcing and quality-control details are the trade-offs.
Kid's Chewable DHA 100 mg Bursting Orange Flavor!
Carlson
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A modest DHA-led chewable with useful triglyceride and vitamin E details, but incomplete safety and ingredient information for a child-focused product.
Kid's Chewable DHA 100 mg Bursting Orange Flavor!
Carlson
DHA: 100 mg
A small-bottle, child-oriented DHA chewable with clear actives but incomplete age, purity, and inactive-ingredient details.
Kid's Chewable DHA 100 mg Bursting Orange Flavor!
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A long-supply DHA chewable for children, with a sensible form but limited purity, flavoring, and age-use information.
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A concentrated EPA-and-DHA serving is clearly disclosed, but missing form and testing details limit confidence in oil quality.
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A modest EPA-and-DHA serving is clearly disclosed, but missing form and testing details limit confidence in oil quality.
DHA from Marine Algae 200 mg
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DHA: 200 mg
A modest DHA softgel with clear active dosing and a vegetarian source. Missing form or quality-control details keep it from being a fully transparent choice.
DHA 700 Pharmaceutical Grade Fish Oil 1000 mg
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A high DHA softgel with clear active dosing and a focused marine-oil formula. Missing form or quality-control details keep it from being a fully transparent choice.
RxOmega-3
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Omega Superb Lemon Berry Flavored
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A balanced low-dose cod liver oil with useful vitamins and a long supply, but limited potency and incomplete quality disclosure.
Ultra Strength One-per-Day RxOmega-3
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DHA: 600 mg
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Ultra Strength One-per-Day RxOmega-3
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DHA: 600 mg
A concentrated one-per-day dose is the main strength, while ambiguous EPA disclosure and ethyl ester delivery are the main trade-offs.
RxOmega-3
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The larger package offers practical value for a moderate omega-3 dose, but the duplicated DHA listing and ethyl ester form are meaningful drawbacks.
RxOmega-3
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DHA: 400 mg
A large, economical supply of moderate-strength omega-3 is useful for daily maintenance, but the active labeling is unclear and the oil uses an ethyl ester form.