Vitamin D Deficiency

Published Recommendations which has the following

Reasons for Vitamin D deficiency 35+ reasons



Incidence of 22 health problems related to vitamin D have doubled in a decade
Criteria to associate a health problem with low vitamin D
Many reasons why vitamin D deficiency has become epidemic 20 of the 35 are new in past few decades
Diseases that may be related via low vitamin D
Vitally important to restore vitamin D levels if have one vitamin D related disease so as to reduce risk of comorbid diseaes

Deficiency of Vitamin D category listing has 452items along with related searches

EVIDENCE OF VITAMIN D

Random Controlled Trials

Evidence for D 60 items  Overview Diseases TREATED 40 items Overview Meta-analysis of Vitamin D 641 meta-analysis

Proofs that vitamin D works 60+ Random Controlled Trials (as of May 2018)

Intervention - Vitamin D category listing has 799 items along with related searches

VITAMIN D DEFICIENT GROUPS

Dark skin Overview

10 Most-visited pages in Dark Skin category in VitaminDWiki

Pregnant Overview

10 Most-visited pages in Prednancy category in VitaminDWiki

Dark Skin AND Pregnant Overview

Obese Overview

10 Most-visited pages in Obesity category in VitaminDWiki

Seniors Overview 

10 Most-visited pages in Seniors category in VitaminDWiki

Shut-in 39 items

List of High Risk Groups 64 items

GLOBAL VITAMIN D

Australia & NZ 68 items

Canada 51 items Europe 227 items Far from Equator 124 items Middle East 151 items   Overview

Category Optimum Vitamin D 99 items

Estimate (predict) vitamin D levels without a test

Predict Vitamin D category has the following
It is very difficult to predict the response to supplementation of Vitamin D, or additional sun/UV
There are a huge number of factors involved.
 
This page also has studies predicting deficiency without Vitamin D tests

Examples of 79 studies that Predict Vitamin D levels

• Vitamin D deficiency predicted with 91% accuracy ( AI, age, paywall) - April 2024
• Predictors of low vitamin D: race, age, and BMI (confirmed now by Machine Learning) – Feb 2024
• Low Vitamin D screening with just 5 questions (for less than 12 ng) – June 2022
• Top 10 signs of Vitamin D Deficiency (9 minute Video) - Oct 2021
• Estimate Vitamin D levels based on questionnaires (12 studies) – July 2020
• Is a senior Vitamin D insufficient - a 2 minute questionnaire is 85 percent accurate – Nov 2019
• Simple Vitamin D deficiency scoring system – Feb 2016
• Toward predicting vitamin D levels without a blood test. by VitaminDWiki
• Excellent prediction of very low vitamin D in elderly from just 16 questions (analyzed by ML) – June 2017
• Quick, free, self test of vitamin D deficiency 90% chance <20 ng

People die sooner if have low vitamin D

[https://www.vitamindwiki.com/tiki-browse_categories.php?parentId=138&sort_mode=created_desc| All items in category Mortality and Vitamin D] 79 items

All items in category Testing Vitamin D 156 items

Big increase in number of Vitamin D tests

Big differences in 1090 test results of the same blood sample - 2013