DHA
An essential omega-3 fatty acid for brain and eye health.
Also known as: Docosahexaenoic Acid
Overview
Docosahexaenoic acid (DHA) is a long-chain omega-3 fatty acid that is a primary structural component of the human brain, cerebral cortex, skin, and retina. It is essential for the growth and functional development of the infant brain and is also required for the maintenance of normal brain function in adults. The inclusion of plentiful DHA in the diet improves learning ability, whereas deficiencies of DHA are associated with deficits in learning. DHA is found in high concentrations in the brain and retina, where it plays a crucial role in neurotransmission and vision. It is also a key component of cell membranes, helping to maintain their fluidity and function. DHA is primarily obtained from fatty fish and fish oil supplements, as well as from algae-based supplements.
Key Benefits
Supports Brain Health
DHA is a major building block of the brain and is essential for cognitive function, memory, and mood.
Promotes Eye Health
DHA is a key component of the retina and is crucial for healthy vision.
Supports Cardiovascular Health
DHA may help reduce triglycerides, lower blood pressure, and reduce the risk of heart disease.
Dosage & How to Take
The recommended daily intake of DHA varies depending on age and health status. A common recommendation is 250-500 mg of combined EPA and DHA per day for healthy adults.
| Purpose | Dose | Notes |
|---|---|---|
| General Health | 250-500 mg of EPA and DHA per day | From fish oil or algae. |
| Cognitive Support | 500-1000 mg of DHA per day | Higher doses may be beneficial for cognitive function. |
Best Time to Take
Best taken with a meal that contains fat to enhance absorption.
With or Without Food
With food.
Forms & Bioavailability
| Form | Absorption | Best For | Notes |
|---|---|---|---|
| Fish Oil | High | General use | Choose a high-quality, purified fish oil to avoid contaminants. |
| Algae Oil | High | Vegetarians and vegans | A sustainable and plant-based source of DHA. |
Side Effects & Safety
Common
- Fishy aftertaste
- Bad breath
- Heartburn
Rare
- Nausea
- Diarrhea
Contraindications
- Bleeding disorders
Interactions
May increase the risk of bleeding.
May enhance the effects of blood pressure-lowering drugs.
Scientific Research
Omega-3 Fatty Acids EPA and DHA: Health Benefits Throughout Life
Fish-derived omega-3 fatty acids EPA and DHA have been associated with fetal development, cardiovascular function, and Alzheimer's disease.
Health benefits of docosahexaenoic acid and its bioavailability
DHA is critical for all life stages from fetal development to elderly health.
Food Sources
Products With DHA
46 products in our database contain this ingredient
Frequently Asked Questions
Medical Disclaimer
This content is for educational and informational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any supplement regimen, especially if you have pre-existing health conditions or are taking medications. The statements on this page have not been evaluated by the Food and Drug Administration.