title: [Evaluation of prevalece of plasma 25(OH)D vitamin deficiency in residents of Lodz].
abstract: Only scarce data have been published regarding serum vitamin D status in adult population in Poland. Observational studies have suggested relationship between 25(OH)D deficiency and many diseases, such as cardiovascular diseases, autoimmunological diseases or cancers. Still little is known about plasma 25(OH)D deficiency in Polish healthy adults.
  
  
  OBJECTIVE
  The aim of the study was to assess plasma 25(OH)D vitamin deficiency in residents of Lodz.
  
  
  METHODS
  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 plasma level of 25(OH)D above 30 ng/ml was considered normal, between 21 ng/ml and 30 ng/ml - suboptimal (hypovitaminosis) and below 20 ng/ml - insufficient (deficiency).
  
  
  RESULTS
  Plasma 25(OH)D vitamin deficiency was observed in 23,01% participants, hipovitaminosis - in 46,32%, the recommended 25(OH)D concentration in the plasma was observed only in 30,67%. Plasma 25(OH)D vitamin deficiency was observed more often in men than women (25,64% vs. 20,59%, p<0,05);the highest percentage of patients with recommended 25(OH)D vitamin level was observed during summer months (60%).
  
  
  CONCLUSIONS
  Plasma 25(OH)D vitamin deficiency was very high in residents of Lodz, especially in men, people over 55 years and during winter months.
authors.affiliation: Medical University of Lodz, Poland: Department of Hygiene of Nutrition and Epidemiology.
authors.forename: Małgorzata
authors.initials: M
authors.lastname: Godala
authors.affiliation: Medical University of Lodz, Poland: Department of Internal Diseases and Nephrodiabetology.
authors.forename: Izabela
authors.initials: I
authors.lastname: Materek-Kuśmierkiewicz
authors.affiliation: Medical University of Lodz, Poland: Department of Internal Diseases and Nephrodiabetology.
authors.forename: Dariusz
authors.initials: D
authors.lastname: Moczulski
authors.affiliation: Medical University of Lodz, Poland: Department of Hygiene and Health Promotion, 5Department of Internal and Infectious Diseases.
authors.forename: Franciszek
authors.initials: F
authors.lastname: Szatko
authors.affiliation: Medical University of Lodz, Poland: Department of Hygiene and Health Promotion, 5Department of Internal and Infectious Diseases.
authors.forename: Ewelina
authors.initials: E
authors.lastname: Gaszyńska
authors.affiliation: Faculty of Medicine University of Rzeszow, Poland.
authors.forename: Sławomir
authors.initials: S
authors.lastname: Tokarski
authors.affiliation: Medical University of Lodz, Poland: Department of Internal and Infectious Diseases.
authors.forename: Jan
authors.initials: J
authors.lastname: Kowalski
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011044:Poland; D015995:Prevalence; D012621:Seasons; D012737:Sex Factors; D014807:Vitamin D / Q000031:analogs & derivatives* / Q000097:blood; D014808:Vitamin D Deficiency / Q000453:epidemiology*
chemical_list: D014807:Vitamin D; C104450:25-hydroxyvitamin D
keywords: deficiency; residents of Lodz; vitamin D