Postnoon | Short course: Headrushes may lead to heart failure-Study Indian Express Beware, you may have a higher risk of developing heart failure, scientists say. According to researchers, dizzy spells experienced after standing up suddenly are caused by a rapid drop in blood pressure known as orthostatic hypotension. Sudden BP drop tied to chances of heart failure Dizzy when you stand up? Heart failure a risk Lightheadedness when standing signals heart risk |