 A group of 10 obese normotensive subjects will be admitted to the Grady Clinical Research Center or to the Outpatient Research Unit in the Grady Diabetes Clinic on five occasions. In four of these admissions, research subjects will receive an 8-hour intravenous infusion, in random order, of increasing Intralipid concentration 10 ml, 20 ml, 40 ml per hour or normal saline 40 ml per hour. During the final admission, research subjects will receive an oral liquid fat diet every 2 hours for 8-hours. The effect of increased FFAs on blood pressure and endothelial vascular function via intravenous infusion and via oral fat load therapy will be assessed. 