Omega-3 Fatty Acids for Processing Speed Improvement
Omega-3 supports long-term brain health but does not measurably speed up processing in healthy adults.
Overview
Verdict
How It Works
Dosing & Protocol
Typical dose
- Recommended dose
- 1-2g/day EPA+DHA
- Expected timeframe
- 6-12 months
Protocol
- form
- Fish oil or algal oil, DHA-predominant in most cognitive trials
- duration
- Trials ran 6 months to several years
- co factor
- Evidence is insufficient. Randomised trials measuring specific cognitive domains in healthy adults and older adults have generally found no significant improvement in processing speed with omega-3 supplementation - the large AREDS2 cognitive substudy and several dedicated trials in cognitively healthy older adults were null, and where positive findings appear they are usually in composite scores or in subgroups with low baseline omega-3 status rather than in processing speed specifically. Observational associations between fish intake and slower cognitive decline exist but are confounded. The doses above were used and did not show a reliable benefit for this domain.
- titration
- Not applicable - there is no dose shown to improve processing speed
- starting dose
- Not established for this outcome. Trials used 1,000-2,000 mg/day EPA+DHA over 6-24 months
Evidence
What the studies say
Omega-3 supplementation and cognitive performance in healthy older adults: a randomized controlled trial
van de Rest O, Geleijnse JM, Kok FJ +3 more
Omega-3 supplementation produced no significant improvement in attention, processing speed or memory versus placebo
Safety
Caveats
Value is preventive and long-term rather than an acute performance effect.
Less likely to help if
Medical Disclaimer
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