Heart disease has haunted generations of Robin Drummond's family. "I have a
family history of
heart disease on both sides," says the 55-year-old African-American and
resident of Hammond, La. "I've had uncles, aunts, and grandparents who've died
heart attacks and heart disease, and two of my mother's brothers died four
months apart. One had a heart attack in church, and four months later, one had
a heart attack in the post office."
When Drummond's father succumbed to heart disease...
Fainting one time is usually nothing to worry about. But it is a good idea to see your doctor, because fainting could have a serious cause.
What causes fainting?
Fainting is caused by a drop in blood flow to the brain. After you lose consciousness and fall or lie down, more blood can flow to your brain so you wake up again.
The most common causes of fainting are usually not signs of a more serious illness. In these cases, you faint because of:
The vasovagal reflex, which causes the heart rate to slow and the blood vessels to widen, or dilate. As a result, blood pools in the lower body and less blood goes to the brain. This reflex can be triggered by many things, including stress, pain, fear, coughing, holding your breath, and urinating.
Fainting caused by the vasovagal reflex is often easy to predict. It happens to some people every time they have to get a shot or they see blood. Some people know they are going to faint because they have symptoms beforehand, such as feeling weak, nauseated, hot, or dizzy. After they wake up, they may feel confused, dizzy, or ill for a while.
Some causes of fainting can be serious. These include: