Change in your normal heart rate or rhythm and lightheadedness
Your heart rate may increase with illnesses, such as a cold
or flu, especially if you have a fever.
Lightheadedness can be common with these illnesses
because you may not be able to drink enough fluids to replace any fluid loss
from fever, vomiting, or diarrhea. A sudden drop in your blood pressure when
you change positions (orthostatic hypotension) also can cause
lightheadedness. Home treatment is usually all that is needed to relieve your
A very fast or very slow heart rate also can reduce the
amount of blood flow from the heart to the brain and cause lightheadedness.
This may be a sign of a heart problem and needs to be evaluated by a health
Atherosclerosis -- sometimes called hardening of the arteries -- can slowly narrow and harden the arteries throughout the body. When atherosclerosis affects the arteries of the heart, it’s called coronary artery disease.
Coronary artery disease is the No. 1 killer of Americans. Most of these deaths are from heart attacks, caused by sudden blood clots in the heart’s arteries.
Atherosclerosis can create life-threatening blockages, without you ever feeling a thing. Since we’re all at risk for coronary...