IntrOductIOnVitamin D Deficiency (VDD) is a pandemic, affecting populations across the globe [1]. Despite its favourable tropical location and perennial ample sunshine, India is not immune to this public health menace [2]. VDD is more likely to occur in women and elderly [3]. In particular, VDD is exacerbated in Post-Menopausal Women (PMW) owing to the loss of estrogen and age-related changes in the vitamin D receptor and vitamin D synthesis. No wonder, prevalence of VDD ranges from 50% to 90% in PMW in western world [4,5]. Similar results have been found in few studies from India as well [6][7][8].Hypovitaminosis D is increasingly being recognized as a potential novel cardiovascular risk factor. Low levels predispose to conventional cardiovascular risk factors like hypertension (HTN), adiposity, dyslipidaemia and diabetes [9][10][11][12]. Epidemiological studies also provide speculation over a possible inverse association between vitamin D status and metabolic syndrome (MetS) [13][14][15]. However, there is limited evidence regarding this relationship in Asian populations, who are at risk for cardiovascular diseases (CVDs) at lower body mass index (BMI) [16][17][18][19][20]. Additionally, prevalence of CVD risk factors has been reported to be increased after menopause owing to the risk of central obesity resulting from estrogen deficiency [21,22]. Yet, studies investigating the association between vitamin D levels and cardio-metabolic risk factors including MetS in Asian Indian PMW are scarce [6,7].
AImThe objective of our study was to determine the correlation of vitamin D levels with conventional cardiovascular risk factors like obesity, HTN, hyperglycaemia and dyslipidaemia in PMW. It also aimed to investigate the association between vitamin D status and MetS.
mAterIAls And methOdsThis cross-sectional study was carried out at a teaching hospital over one year from January 2014 to December 2014. The study was approved by the ethical committee of the institute. All subjects gave their informed consent before participating in the study. Total of 64 PMW attending the outpatient clinic of Gynaecology department as well as Menopause clinic were recruited. Postmenopausal status was defined as cessation of menstruation for at least 1 year. Hysterectomised women were included if aged 45-52 years, provided they had elevated serum follicular stimulating hormone (> 40 IU/L). None of our patients were taking hormone replacement therapy. Exclusion criteria were chronic liver or kidney disease, previous or current cancer, malabsorption, sunlight allergies, endocrine disorders like Cushing syndrome, hyperthyroidism, hypothyroidism and primary hyperparathyroidism, those on drugs like oral contraceptives, statins, anti-epileptics, rifampicin, vitamin D or calcium supplementations, current or past treatment with glucocorticoids > 6 months, addiction to alcohol or drugs and those who were diagnosed to have PCOS previously.Detailed history was elicited with respect to symptoms of VDD. Clinical and anthropometric data were record...