Study to Evaluate Subclinical Atherosclerosis (an Early Sign of Heart Disease) in Healthy Adult Immigrant Asian Indians

Non-invasive assessment of flow-mediated dilation (FMD) will be performed using brachial artery ultrasound.

Nitroglycerin 0.4 mg (a small tablet that dissolves under the tongue) will be given to dilate the arteries. Images of the arm will be recorded via non-invasive flow-mediated doppler for 5 minutes to assess for endothelium dysfunction. as outlined above.