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Monthly vitamin D helped hearts with low vitamin D a bit (need it more frequently) – RCT March 2022


Effect of monthly vitamin D supplementation on cardiac biomarkers: a post-hoc analysis of a randomized controlled trial

J Steroid Biochem Mol Biol. 2022 Mar 7;106093. doi: 10.1016/j.jsbmb.2022.106093 (behind paywall)
Zhenqiang Wu 1, John Sluyter 2, Oi Wah Liew 3, Jenny Pek Ching Chong 3, Debbie Waayer Med 2, Carlos A Camargo 4, A Mark Richards 5, Robert Scragg Mbbs 2

The effects of vitamin D supplementation on cardiovascular diseases are controversial. Data on effects of vitamin D upon cardiac biomarkers, as surrogate endpoints of cardiovascular diseases, are limited and inconclusive. Therefore, we carried out a post-hoc analysis of sub-samples of a randomized, double-blinded, placebo-controlled trial with community-based older adults who were randomized to receive monthly 100,000-IU vitamin D or placebo, to determine effect of monthly vitamin D supplementation on high-sensitivity cardiac troponin I (hs-cTnI), troponin T (hs-cTnT) and N-terminal-pro-B-type natriuretic peptide (NT-proBNP). Adjusted relative difference (aRD) of follow-up geometric mean of biomarkers and adjusted relative risk (aRR) of elevated biomarkers between two groups were calculated. A total of 779 participants aged 50-84y, randomized to vitamin D (n=395) or placebo (n=384) groups underwent sampling for measurement of plasma biomarkers at baseline and after one or two years treatment. Over a mean follow-up of 1.6years, we did not find significant relative difference of geometric mean levels of three biomarkers at follow-up between vitamin D and placebo groups: hs-cTnI (aRD=1.03, 95%CI=0.97-1.09), hs-cTnT (aRD=0.99, 95%CI=0.95-1.04), and NT-proBNP (aRD=1.01, 95%CI=0.92-1.10). No significant differences were found in likelihood of clinically elevated biomarkers between two groups: hs-cTnI (aRR=0.92, 95%CI=0.51-1.69), hs-cTnT (aRR=1.11, 95%CI=0.86-1.42), and NT-proBNP (aRR=1.03,95%CI=0.89-1.20). However, among participants with initial low vitamin D status (<50 nmol/L, n=200), follow-up NT-proBNP were significantly lower in the vitamin D group compared to placebo (geometric mean 75.9 vs 94.5pg/mL, respectively; aRD=0.84, 95%CI=0.71-<1.00). The same results were observed for the NT-proBNP levels change from baseline between two groups. Overall, in older adults, monthly vitamin D supplementation did not reduce concentrations of hs-cTnI, hs-cTnT, and NT-proBNP.
In those with low vitamin D status, vitamin D treatment was associated, on follow up and change from baseline, with lower plasma NT-proBNP compared with placebo. This potentially signals reduced risk of subsequent heart failure within this sub-group. However, we acknowledge that these findings need to be considered exploratory. Further research is required to replicate them.


VitaminDWiki - Cardiovascular category

460 items In Cardiovascular category

Cardiovascular category is associated with other categories: Diabetes 31, Omega-3 31 , Vitamin K 25 , Intervention 22 . Mortality 20 , Skin - Dark 18 , Magnesium 17 , Calcium 14 , Hypertension 14 , Trauma and surgery 13 , Stroke 13 , Kidney 12 , Metabolic Syndrome 11 , Seniors 10 , Pregnancy 8 as of Aug 2022

Cholesterol, Statins


VitaminDWiki - Take vitamin D3 daily, weekly, or bi-weekly

Notional chart of Vitamin D benefit vs dosing frequency for >50 nanograms
see wikipage http://www.vitamindwiki.com/tiki-index.php?page_id=2475


VitaminDWiki - monthly Injection might be OK

61 items in Vitamin D Injection category

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  • Injections are currently made by medical professionals into muscle
  • Home injection of Vitamin D appears to be possible in the future
  • Injections are useful for people who might forget to take their periodic supplement (children, elderly, etc) and those who cannot swallow or have poor digestion
  • While Vitamin D2 is historically the common form, Vitamin D3 is far better
  • Should check (if there is time) for possible allergic reaction to Vitamin D or lack of Magnesium for both for loading dose and injection
  • Note 600,000 IU Vitamin D loading dose via capsules is 1/20th the cost($2.40) of an injection, and does not require a prescription
  • 100,000 IU single dose of vitamin D - 2010 has the following
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  • Vitamin D injection lasts longer and has bigger response than weekly oral – Jan 2017 has the following
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