Pol. Merkur. Lek (Pol. Med. J.), 2016, XL/237: 160-163 Maximize

Pol. Merkur. Lek (Pol. Med. J.), 2016, XL/237: 160-163

Title: Estimation of plasma 25(OH)D vitamin level in residents of Lodz 

Authors: Godala M, Materek-Kuśmierkiewicz I, Moczulski D, Szatko F, Gaszyńska E, Tokarski S, Kowalski J. 

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Estimation of plasma 25(OH)D vitamin level in residents of Lodz

Godala M1, Materek-Kuśmierkiewicz I2, Moczulski D2, Szatko F3, Gaszyńska E3, Tokarski S4, Kowalski J5.

Medical University of Lodz, Poland: 1Department of Hygiene of Nutrition and Epidemiology, 2Department of Internal Diseases and Nephrodiabetology, 3Department of Hygiene and Health Promotion, 5Department of Internal and Infectious Diseases; 4Faculty of Medicine, University of Rzeszow, Poland;

Recent evidence for the pleiotropic differentiated effects of vitamin D, coupled with recognition that vitamin D deficiency is common, has revived interest in this hormone. Vitamin D is produced by skin exposed to ultraviolet B radiation or obtained from dietary sources, including supplements. Persons commonly at risk for vitamin D deficiency include those with inadequate sun exposure, limited oral intake, or impaired intestinal absorption.
The aim of this study
was to evaluate plasma 25(OH)D level in residents of Lodz.
Material and method
. The study included 326 residents of Lodz, 156 men and 170 women, aged 30-65 years (mean 57,25±8,24 years). The study group was divided according to the age and season. The concentration of 25-hydroxy vitamin D (25-OH-D) was assessed with the application of the LIAISON® test using chemiluminescent immunoassay (CLIA) technology.
. The mean plasma level of 25(OH)D was 24,96±9,84 ng/ml in studied population and it was not significantly higher in women than men (25,24 ±3,31 ng/ml vs. 23,97±3,71 ng/ml, p>0,05); The highest 25(OH)D concentration was noted in the oldest age group (29,12±2,78 ng/ml)and in summer months (33,21±2,91 ng/ml).
. The concentration of vitamin D in the plasma of residents of Lodz was significantly lower than its recommendations. Age and season of the year were the factors strongly affecting the level of 25(OH)D in studied group.

Key words: residents of Lodz, vitamin D, seasonal variations

Pol Med J, 2016; XL (237); 160–163