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[PMID 19185284] rs6564851(G) associated with higher beta-carotene (p = 1.6 x 10(-24)) and alpha-carotene (p = 0.0001) levels and lower lycopene (0.003), zeaxanthin (p = 1.3 x 10(-5)), and lutein (p = 7.3 x 10(-15)) levels, with effect sizes ranging from 0.10-0.28 SDs per allele.
Note that low plasma levels of carotenoids and tocopherols are associated with increased risk of chronic disease and disability, yet dietary intake of these lipid-soluble antioxidant vitamins is only poorly correlated with plasma levels, leading to the hypothesis that it isn't what you eat, it's your SNPs that regulate your carotenoid levels.[PMID 19185284]
This is one of the SNPs reported by NutraHacker.[PMID 19662379] Circulating beta-carotene levels and type 2 diabetes-cause or effect?
[PMID 20616999] Usefulness of Mendelian randomization in observational epidemiology.
[PMID 22113863] Single nucleotide polymorphisms upstream from the beta-carotene 15,15'-monoxygenase gene influence provitamin A conversion efficiency in female volunteers.
|qualified_impact||Insufficiently evaluated pathogenic|
[PMID 23468552] Genetic variants influencing biomarkers of nutrition are not associated with cognitive capability in middle-aged and older adults.