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Related Experiment Video

Updated: Jun 2, 2026

A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data

A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data

Published on: December 9, 2015

Vitamin D: Lessons from the veterans population.

Tariq Islam¹, Prith Peiris, Rebecca J Copeland

¹Department of Internal Medicine, East Tennessee State University, Johnson City, TN, USA.

Journal of the American Medical Directors Association

|April 30, 2011

Summary

Vitamin D deficiency affects 40% of veterans, increasing healthcare costs. Higher doses than currently recommended may be needed to achieve adequate vitamin D levels for optimal health benefits.

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Last Updated: Jun 2, 2026

A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data

A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data

Published on: December 9, 2015

Area of Science:

Endocrinology
Public Health
Geriatrics

Background:

Vitamin D deficiency (25(OH)D < 20 ng/mL) is prevalent in approximately 40% of veterans, correlating with elevated healthcare expenditures and service utilization.
Higher prevalence is observed in specific veteran subgroups, including ethnic minorities, individuals with chronic illnesses, and nursing home residents.
Inadequate sunlight exposure and poor dietary intake are primary contributors, with deficiency noted even in those adhering to recommended supplement dosages.

Purpose of the Study:

To highlight the significant prevalence of vitamin D deficiency in the veteran population.
To underscore the inadequacy of current testing and monitoring practices for vitamin D status.
To emphasize the recognized health benefits of achieving vitamin D repletion and the need for improved management strategies.

Main Methods:

Review of existing literature on vitamin D deficiency prevalence and management in veterans.
Analysis of factors contributing to vitamin D deficiency, including sunlight exposure, diet, and supplementation.
Evaluation of current testing and monitoring guidelines and their impact on patient outcomes.

Main Results:

A substantial percentage of veterans exhibit vitamin D deficiency, leading to increased healthcare costs.
Current recommended daily intake may be insufficient to achieve therapeutic 25(OH)D levels (30-100 ng/mL) in many individuals.
Suboptimal testing and monitoring protocols hinder the effective management of vitamin D deficiency.

Conclusions:

Achieving adequate vitamin D status in US veterans is a critical health objective with potential to improve longevity.
Evidence-based guidelines for vitamin D testing and monitoring are urgently needed to optimize patient care.
The recognized benefits of vitamin D repletion across cardiovascular, immunological, infectious, and oncological systems necessitate improved management strategies.