 - 50 patients with 25 OH D levels 37.5 nmolL will be recruited. Patient demographics, anthropometric data and pertinent clinical history would be obtained upon enrollment. Blood will be collected for calcium, phosphate, parathyroid hormone levels, bone alkPO4, and high sensitivity C reactive protein hsCRP. Biomarkers of cardiac fibrosis serum PICP, ECM turnover MMP1 and TIMP1 and cardiac function plasma NT proBNP will be measured. Transthoracic Echocardiography will be performed at baseline to fulfill recruitment criteria and diastolic function. Cardiac TDI function and CMR will be performed at baseline for systolic function and LVM, respectively. 