Vitamin D status and risk factors among pregnancy of shanghai in China

Abstract Background This study was to assess vitamin D nutritional status and risk factors among pregnancy of shanghai in China. Methods A cross-sectional study conducted in the Sixth Affiliated People’s Hospital of Shanghai Jiao Tong University. All pregnancy was measured for plasma vitamin D, total blood cholesterol (TCh), high-density lipoprotein (HDL), low-density lipoprotein (LDL) or very-low-density lipoprotein (VLDL) cholesterol and triglycerides, and completed OGTTs test. Age, height, and weight variables came from their electronic medical records. Criteria for vitamin D status were: <12 ng/ml: severe deficiency; 12–19 ng/ml: deficiency; 20–29 ng/ml: insufficiency; 30–50 ng/ml: normal; and > 50 ng/ml (particularly > 60 ng/ml): possibly leading to adverse effects. Vitamin D was measured from December 2016 to April 2017. Results Our study included 953 pregnant women. The mean vitamin D level of pregnancy was 16.06 (range 10.90 to 20.60) ng/ml,and severe vitamin D deficiency was 31.79%(303); vitamin D deficiency was 40.71 %(388); vitamin D insufficiency was 25.08%(239); normal vitamin D was 2.42%(23). Vitamin D deficiency risk factors were age over 30, parity over 2, overweight, obese, gestational diabetes mellitus, and hyperglycemia. Conclusions It is a high prevalence of vitamin D deficiency of Chinese pregnancy in shanghai. Aging more than 30 years, the parity of more than 2, overweight and obesity, gestational diabetes mellitus and hyperglycemia are risk factors for vitamin D deficiency. Public health strategies should focus on the population of pregnancy in shanghai in China.