What's on This Page. U.S. Census Data and Statistics. The United States Census Bureau provides data about the nationâs people and economy. Every 10 years, it conducts the Population and Housing Census, in which every resident in the United States is counted.
âThis can be caused by various diseases of the heart muscle, an abnormal heart rhythm, or a decrease in blood volume, which may cause inadequate blood flow from the heart,â Lotkowski said. Disequilibrium, the loss of balance or feeling unsteady when you walk, is also a condition many people refer to as being dizzy.
Lightheadedness-Feeling lightheaded now and again is pretty common. Usually it is not caused by a serious problem. What causes dizzy spells in the case of lightheadedness is often a drop in blood pressure and blood flow to the head from standing up too quickly after lying down or sitting. This is called orthostatic hypotension. There are many other causes of dizzy spells of this type, such as: