Serum vitamin D levels of individuals with and without Type 2 Diabetes

In this study, it was aimed to investigate the relationship between T2DM and vitamin D by comparing serum vitamin D levels of individuals with Type 2 Diabetes (T2DM) and individuals without diabetes (DM) with their dietary habits, anthropometric measurements and physical activity levels. The study was carried out on 150 individuals with T2DM and 150 without DM, aged 18-45 years, who were diagnosed with T2DM in the last 5 years, who came to the Nutrition and Diet Polyclinic of Ankara Dışkapı Training and Research Hospital between February and April 2021. The general information, health status, nutritional habits, food consumption frequency, physical activity levels of the participants were questioned with a questionnaire and anthropometric measurements of the individuals were taken. The serum vitamin D level is routinely measured from each patient who applied to the Dışkapı Training and Research Hospital Nutrition and Diet Polyclinic. Data on serum vitamin D were obtained from the files of the patients after their examinations were performed. 55.3% of the individuals participating in the study were female and 44.7% were male; The mean age is 36.73±7.51 years in individuals with T2DM and 30.1±7.6 years in individuals without DM. While there was no difference between the groups in terms of gender, marital status and the number of individuals in the family (p>0.05); There is a difference between age groups, education levels and occupational groups and case-control groups (p<0.05). The rate of using vitamin and mineral supplements in the case group was higher (p<0.05); smoking and alcohol consumption were similar (p>0.05). When weight changes in the last 6 months were examined, more changes were found in the case group (p<0.05). Sunlight exposure times were similar in both groups (p>0.05). There was no difference between the number of main meals and the groups (p>0.05), but the consumption of snacks was higher in the case group (p<0.05). Body mass index (BMI) values of T2DM individuals participating in the study were found to be higher than individuals without DM (p<0.05). It was determined that the majority of individuals with and without T2DM had deficient serum vitamin D levels (78% and 53%, respectively) at a statistically significant level. A negative correlation was found between vitamin D level and age and BMI (r=-0.262, -0.190, p<0.05,respectively). Keywords: Type 2 Diabetes, vitamin D deficiency, dietary habits