Association of serum vitamin d level with bmi ,phsicalactivity,nutrition and sun exposure i̇n patiants with obese andoverweigth ;Retrospectly study

In addition to the effect on bone health, vitamin D deficiency is well-known to accelerate many extraskeletal immune disorders, cardiovascular diseases, diabetes mellitus and the formation of certain cancers. In recent studies in obese people vitamin D levels have reported significantly lower than those of non-obese individuals. This impairment is associated with being trapped of vitamin D in the adipose tissue in obese patients and insulin resistance. In our study, a total of 2150 patient records whose admitted for the first time to family medicine and check-up clinic between August 2013- July 2014 were browsed retrospectively. According to research criteria, vitamin D requested 682 patients were divided into 3 groups as overweight, obese and morbidly obese. The relationship between anthropometric measurements, metabolic parameters, blood pressure, physical activity, nutrition and sunbathing and serum vitamin D level is aimed to investigate among groups. Acording to the results of our study, the mean age of the patients 39.55±12.1 years-old and body mass index was found to be 35.6±6 kg/m2. Serum vitamin D level is determined as an avarage of 9.1±5.62 ng/mL in all cases. Only 1.1% of cases level of vitamin D was found adequate, however 68.5% with severe vitamin D deficiency. Vitamin D levels and sun, consumption of dietary factors( egg, fish, meat and mushroom), physical activity status-that all affects vitamin D storage- were analyzed. In 58% of cases have enough sunbath while the rest 42% do not have enough sunbath. In only 5.9% weekly fish consumption is enough. 65.5% consume egg in sufficient quantities and only 18.9% red meat consumption is found enough. In 82.7% of cases there were no liver consumption and in only 3.3% adequate mushroom consumption was seen. Regular exercise was found in 26.9% of cases. There was no significant difference between nutrition, sunbathing and physical activity. In cases negative correlation was observed between vitamin D with BMI and insulin resistance (p<0.001). In nonobese group 1 patients, the highest vitamin D level was observed in autumn (12.2±8.3 ng/mL) while lowest vitamin D level was in spring semester(9.2±5.7 ng/mL). Cases in group 2 (BMI=30-40) were observed with highest vitamin D level in summer(10.9±7.2 ng/mL) and the lowest level in spring(8.4±5.6ng/mL).With the reasons we stand on in our study inadequate feeding with vitamin D-rich food and being benefitted unsufficiently from sun is known. In this situation importance of vitamin D enriched food or vitamin D supplementation is emerged.