Fainting

Whether you have fainted because of low blood sugar or an illness, it can be a scary experience. A decrease in the blood flow to the brain causes fainting, or syncope. A decrease in blood flow can occur for several reasons: the heart doesn't pump enough blood to the brain, there isn't enough blood moving through the blood vessels or a combination of these reasons.

The most common cause of fainting is heart-related. When the heart rhythm changes suddenly, fainting occurs. Fainting can be life-threatening, especially if the heart experiences tachycardia (rapid heart rate). However, illness, fatigue, dehydration and migraine headaches also can cause fainting spells. For diabetics, low or high blood-sugar levels can cause dizziness and fainting spells, which could potentially lead to a diabetic stroke.

Physical issues aren't always the cause of fainting episodes. Emotional stress and environmental factors such as small, enclosed, hot environments also can cause fainting spells.

Most people who experience fainting episodes usually resume normal activity the same day or the next day. However, if a person experiences frequent fainting spells, he should immediately consult with a medical professional. Fainting shouldn't be taken lightly, and if a person remains unconscious for a long period, call emergency services.

Those who suffer from diabetes and other heart-related conditions should maintain a healthy lifestyle and take their prescribed medication to prevent fainting spells. Fainting could be an indication of a more serious, life-threatening disease or illness.