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Thyroid Cancer 1.9 X more likely if poor gene to generate Vitamin D from the sun (DHCR7) – July 2019

Association of Vitamin D Pathway Genetic Variation and Thyroid Cancer.

Genes (Basel). 2019 Jul 28;10(8). pii: E572. doi: 10.3390/genes10080572.
Carvalho IS1, Gonçalves CI1, Almeida JT1, Azevedo T2, Martins T2, Rodrigues FJ2, Lemos MC3.

Vitamin D Life

10 reasons why seniors need more vitamin D has the following

  1. Senior skin produces 3X less Vitamin D for the same sun intensity
  2. Seniors have fewer vitamin D receptors as they age
    (The effect of low Vitamin D receptor genes does not show up on vitamin D test results)
  3. Seniors are indoors more than when when they were younger
    not as agile, weaker muscles; frail, no longer enjoy hot temperatures
    (if outside, stay in the shade), however, seniors might start outdoor activities like gardening, biking, etc.
  4. Seniors wear more clothing outdoors than when younger
    fear skin cancer/wrinkles, sometimes avoid bright light after cataract surgery
  5. Seniors often take various drugs which reduce vitamin D (some would not show up on vitamin D test) statins, chemotherapy, anti-depressants, blood pressure, beta-blockers, etc
  6. Seniors often have one or more diseases which consume vitamin D ( osteoporosis, diabetes, MS, ...)
  7. Seniors generally put on weight at they age - and a heavier body requires more vitamin D
  8. Seniors often (40%) have fatty livers – which do not process vitamin D as well
  9. Seniors not have as much Magnesium needed to use vitamin D
    (would not show up on vitamin D test)
  10. Seniors with poorly functioning kidneys do not process vitamin D as well
    (would not show up on vitamin D test) 2009 full text online  Also PDF 2009
  11. Vitamin D is not as bioavailable in senior digestive systems (Stomach acid or intestines?)

 Download the PDF from Vitamin D Life

Vitamin D is mostly known for its role in bone and calcium metabolism. However, studies have suggested that it also has inhibitory effects on tumor development and progression. Genetic variants close to genes that encode crucial enzymes for the synthesis (DHCR7 rs12785878), metabolism (CYP2R1 rs2060793) and degradation (CYP24A1 rs6013897) of vitamin D have been associated with serum levels of vitamin D. The aim of this case-control study was to determine the effect of these variants in the vitamin D pathway on the susceptibility to thyroid cancer. Five hundred patients with differentiated thyroid cancer and 500 controls were genotyped for the DHCR7 rs12785878, CYP2R1 rs2060793, and CYP24A1 rs6013897 variants. Genotype and allele frequencies were compared between patients and controls. The DHCR7 rs12785878 minor allele was associated with thyroid cancer under an additive (OR 1.38, 95% CI 1.15-1.65, p = 0.0004) and codominant (OR 1.88, 95% CI 1.30-2.74, p = 0.0021) model. These findings suggest that DHCR7 polymorphisms may be associated with an increased risk of thyroid cancer due to an effect of this gene on circulating vitamin D levels.


Created by admin. Last Modification: Wednesday July 31, 2019 21:02:58 GMT-0000 by admin. (Version 5)

Attached files

ID Name Comment Uploaded Size Downloads
12415 Thyroid Cancer less D .pdf PDF 2019 admin 31 Jul, 2019 20:53 226.27 Kb 131
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