Effects of eggs on plasma lipoproteins in healthy populations.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing mechanism-based reasoning and existing literature without systematic review methodology.
PubMed 21776466 · doi:10.1039/c0fo00088d
What was done
Narrative review synthesizing evidence on the relationship between dietary cholesterol from egg consumption, plasma lipoprotein alterations (including LDL and HDL subclasses and particle size), and coronary heart disease risk in healthy populations.
What was found
The review notes that approximately 75% of the population experiences mild or no alterations in plasma cholesterol concentrations when challenged with high amounts of dietary cholesterol (hypo- and normal responders). In hyper-responders, dietary cholesterol increases both circulating LDL and HDL cholesterol. Egg consumption is reported to promote larger LDL and HDL subclasses and shift LDL particle profiles from pattern B to the less atherogenic pattern A. No specific numerical effect sizes, confidence intervals, or study counts are provided in the abstract.
Why it matters
It highlights physiological mechanisms—specifically concurrent HDL elevation and favorable LDL particle size shifts—explaining why dietary egg intake does not consistently correlate with coronary heart disease risk in healthy individuals.
Limits
This is a narrative review lacking a systematic search strategy, quality appraisal, or meta-analytic data pooling. The abstract provides no quantitative data or sample size information, and the conclusions are limited to healthy populations rather than individuals with pre-existing metabolic or cardiovascular disease.
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