- Genetic Restrictions in Nutrient Metabolism: Population Impact Analysis
- VitaminDWiki – Genetics category contains
Genetic Restrictions in Nutrient Metabolism: Population Impact Analysis
Perplexity AI - Deep Research April 2025
This report examines the genetic factors that restrict nutrient metabolism, absorption, transport, and function for five key nutrients. For each nutrient, we identify the relevant genes involved and estimate the percentage of the population affected by genetic variations that may limit optimal nutrient utilization.
Vitamin D: The Sunshine Nutrient
Key Genetic Factors Restricting Vitamin D
- VDR (Vitamin D Receptor): Contains several polymorphisms including FokI, BsmI, ApaI, and TaqI that affect receptor function and sensitivity [1] [19]
- CYP2R1: Converts vitamin D to 25(OH)D (calcidiol), the main circulating form [2] [13]
- CYP27B1: Converts 25(OH)D to the active 1,25(OH)₂D (calcitriol) [2] [20]
- CYP24A1: Catalyzes vitamin D catabolism, affecting vitamin D levels [13] [20]
- GC: Encodes Vitamin D Binding Protein (VDBP), critical for vitamin D transport [2] [13]
- DHCR7: Involved in vitamin D synthesis pathway from 7-dehydrocholesterol [13] [20]
Population Affected – 40-50% at blood level (higher % at cellular level)
Approximately 40-50% of the general population shows some genetic predisposition to vitamin D insufficiency. In specific populations, the prevalence varies significantly:
- Female children (53.1%) have higher rates than male children (41.75%) [3]
- Individuals with specific genetic variants in the top quartile of risk scores have 2-2.5 fold higher odds of vitamin D insufficiency [13]
- Vitamin D deficiency is particularly prevalent in Middle Eastern and Asian populations [1]
Magnesium: The Essential Mineral
Key Genetic Factors Restricting Magnesium
- TRPM6: Encodes a magnesium-permeable ion channel critical for intestinal absorption and renal reabsorption [4] [5]
- TRPM7: Regulates cellular magnesium homeostasis and is ubiquitously expressed [5] [14]
- CNNM4: Mediates basolateral magnesium extrusion in intestinal cells [5]
Population Affected – 20-30%
Approximately 20-30% of the population carries genetic variants potentially affecting magnesium metabolism:
- About 31.5% are heterozygous for the rare G allele of rs2274924 in TRPM6 [4]
- Approximately 22% are heterozygous for the A allele of rs3750425 in TRPM6 [4]
- Population frequencies of these variants range from 7-21% for rs3750425 A allele and 15-36% for rs2274924 G allele across different ethnic groups [4]
Vitamin K: The Coagulation Vitamin
Key Genetic Factors Restricting Vitamin K
- VKORC1 (Vitamin K Epoxide Reductase Complex Subunit 1): Particularly the 1173C>T polymorphism affects vitamin K recycling and utilization [6] [15]
Population Affected
A substantial portion of the population carries genetic variants affecting vitamin K metabolism:
- The T allele frequency of VKORC1 1173C>T polymorphism is 38.8% in studied populations [15]
- Approximately 62.8% of individuals carry at least one T allele (48% heterozygous CT and 14.8% homozygous TT) [15]
- Carriers of the T allele have a 19% increased risk of aortic calcification, suggesting impaired vitamin K-dependent protein function [15]
Vitamin C: The Antioxidant Nutrient
Key Genetic Factors Restricting Vitamin C
- SLC23A1: Encodes SVCT1, the sodium-dependent vitamin C transporter responsible for dietary absorption and renal reabsorption [7] [16]
- SLC23A2: Encodes SVCT2, responsible for cellular vitamin C accumulation [8] [16]
Population Affected – varies
While the exact percentage is difficult to determine from available data, genetic variations affecting vitamin C transport appear common:
- The rs1279683 SNP in SLC23A2 is significantly associated with lower plasma vitamin C concentrations in carriers of the GG genotype [17]
- Approximately 15-25% of studied populations carry genetic variants in SLC23A2 that may affect vitamin C accumulation in tissues [8]
- Variants in SLC23A2 have been associated with increased disease risk when combined with low vitamin C intake [8]
Omega-3 Fatty Acids: The Essential Fats
Key Genetic Factors Restricting Omega-3
- FADS1 (Fatty Acid Desaturase 1): Involved in the biosynthesis of highly unsaturated fatty acids [9] [10]
- FADS2 (Fatty Acid Desaturase 2): Critical for conversion of essential fatty acids to longer-chain polyunsaturated fatty acids [9] [18]
Population Affected - wide: 1% to 55%
The prevalence of genetic restrictions varies widely by ancestry:
- TT genotype at rs174537 (associated with limited LC-PUFA biosynthesis) ranges from <1% in African-ancestry populations to 40-55% in high Amerind-ancestry Hispanic populations [10]
- Approximately 11% of European-ancestry populations carry the TT genotype [10]
- The frequency of minor alleles in FADS polymorphisms ranges from 22.7% to 32.2% among pregnant women in studies [18]
- AI ancestry accounts for approximately 12% of variation in EPA, DHA, and ARA levels in Hispanic populations [10]
Conclusion
Genetic factors substantially influence our ability to utilize essential nutrients, with population-wide effects ranging from approximately 20% to over 60% depending on the nutrient and specific population studied. These genetic restrictions highlight the importance of personalized nutrition approaches that account for individual genetic variations in nutrient metabolism.
[Note: These percentages represent estimates based on available research and may vary across different populations and studies.]
Citations:
[1] https://pmc.ncbi.nlm.nih.gov/articles/PMC10136052/
[2] https://journals.physiology.org/doi/full/10.1152/ajpendo.00279.2012
[3] https://www.nature.com/articles/s41598-022-07661-y
[4] https://pmc.ncbi.nlm.nih.gov/articles/PMC5047867/
[5] https://www.frontiersin.org/journals/oncology/articles/10.3389/fonc.2022.947899/full
[6] https://pmc.ncbi.nlm.nih.gov/articles/PMC6714692/
[7] https://onlinelibrary.wiley.com/doi/abs/10.1111/jcpe.12253
[8] https://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0070421
[9] https://pmc.ncbi.nlm.nih.gov/articles/PMC6024808/
[10] https://www.nature.com/articles/s42003-021-02431-4
[11] https://www.nature.com/articles/s41598-024-79994-9
[12] https://pmc.ncbi.nlm.nih.gov/articles/PMC8677352/
[13] https://pmc.ncbi.nlm.nih.gov/articles/PMC3086761/
[14] https://pmc.ncbi.nlm.nih.gov/articles/PMC2637850/
[15] https://www.ahajournals.org/doi/10.1161/atvbaha.107.159913
[16] https://www.tandfonline.com/doi/abs/10.1080/01635580802033110
[17] https://pubmed.ncbi.nlm.nih.gov/22171153/
[18] https://pmc.ncbi.nlm.nih.gov/articles/PMC8912382/
[19] https://pubmed.ncbi.nlm.nih.gov/37189820/
[20] https://pmc.ncbi.nlm.nih.gov/articles/PMC10531002/
[21] https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2023.1070808/full
[22] https://pmc.ncbi.nlm.nih.gov/articles/PMC11161438/
[23] https://www.pnas.org/doi/10.1073/pnas.0402490101
[24] https://pmc.ncbi.nlm.nih.gov/articles/PMC9919096/
[25] https://www.frontiersin.org/journals/endocrinology/articles/10.3389/fendo.2018.00448/full
[26] https://pmc.ncbi.nlm.nih.gov/articles/PMC10057500/
[27] https://www.nature.com/articles/s41430-020-0558-y
[28] https://pubmed.ncbi.nlm.nih.gov/38847864/
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[35] https://www.mygenefood.com/genes/gastrointestinal-genes/trpm6/
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[44] https://www.uniprot.org/uniprotkb/P38435/entry
[45] https://en.wikipedia.org/wiki/Vitamin_K
[46] https://onlinelibrary.wiley.com/doi/10.1155/2023/8898922
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[52] https://www.genecards.org/cgi-bin/carddisp.pl?gene=SLC23A2
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VitaminDWiki – Genetics category contains
see also
- Vitamin D Receptor has
537 items - Vitamin D Binding Protein = GC has
178 items - CYP27B1 has
64 items - CYP24A1 in title of 39+ items
- CYP2R1 25+ items
- Calcidiol has
49 items - Calcitriol has
64 items - Topical Vitamin D
- Nanoemulsion Vitamin D may be a substantially better form
- 1289 genes changed with higher doses of Vitamin D - RCT Dec 2019
- CYP3A4 (7 as of Dec 2022)
- Getting Vitamin D into your blood and cells
Vitamin D blood test misses a lot
- Vitamin D from coming from tissues (vs blood) was speculated to be 50% in 2014, and by 2017 was speculated to be 90%
- Note: Good blood test results (> 40 ng) does not mean that a good amount of Vitamin D actually gets to cells
- A Vitamin D test in cells rather than blood was feasible (2017 personal communication) Commercially available 2019
- However, test results would vary in each tissue due to multiple genes
- Good clues that Vitamin D is being restricted from getting to the cells
1) A vitamin D-related health problem runs in the family
especially if it is one of 51+ diseases related to Vitamin D Receptor
2) Slightly increasing Vitamin D shows benefits (even if conventional Vitamin D test shows an increase)
3) DNA and VDR tests - 100 to 200 dollars $100 to $250
4) PTH bottoms out ( shows that parathyroid cells are getting Vitamin d)
Genes are good, have enough Magnesium, etc.
5) Back Pain
probably want at least 2 clues before taking adding vitamin D, Omega-3, Magnesium, Resveratrol, etc- The founder of VitaminDWiki took action with clues #3&5
Genes restrict Vitamin D, Vitamin K, Omega-3, Magnesium, etc.77 visitors, last modified 06 Apr, 2025, This page is in the following categories (# of items in each category) - Vitamin D Binding Protein = GC has