Omega-3 Polyunsaturated Fatty Acids and Their Health Benefits
Shahidi F, Ambigaipalan P
Published in Annual Review of Food Science and Technology
Abstract
Comprehensive review of omega-3 fatty acids effects on brain structure, function, and behavior, including cognitive performance and mental health.
Methodology
Comprehensive review of omega-3 polyunsaturated fatty acid chemistry, dietary sources, metabolism and epidemiological and clinical evidence across cardiovascular, neurological, inflammatory and metabolic outcomes.
Key Findings
Conversion of plant-derived ALA to EPA and especially DHA is inefficient in humans, so marine sources dominate tissue status. Evidence is strongest for triglyceride lowering and for DHA in neural development, while findings for cognition, mood and inflammatory conditions are mixed. Oxidation during processing and storage is a real quality problem for supplements.
Conclusions
Omega-3 intake from marine sources supports cardiovascular and neural health chiefly through defined mechanisms such as triglyceride lowering and membrane DHA supply; broader claims remain inconsistent across trials.
Limitations
Narrative review without systematic search or pooled effect estimates; combines mechanistic, epidemiological and trial evidence of unequal quality; product oxidation status is rarely reported in underlying trials.
Supplements Studied
Omega-3 fatty acids, particularly DHA, are essential structural components of neuronal membranes and influence brain function and behaviour.
Outcomes Measured
Omega-3 fatty acids are essential structural components of neuronal membranes and influence brain function and behaviour.
Related Health Concerns
Study Details
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This information is for educational purposes only. Always consult a healthcare professional before starting any supplement regimen.