Why Do I Get Light Headed When I Stand up?

Answer

If you have ever felt a sudden wave of dizziness after abruptly standing up, you are not alone. Lightheadedness upon standing up can be caused by a low heart rate. When you stand up quickly, the blood in your brain travels towards your feet due to gravity, and it may not return to the brain for a few heartbeats if you have a slow pulse. This causes the brain to undergo a transient lack of oxygen, causing you to feel dizzy for a few seconds. If this happens to you occasionally, there is no need to worry, but if it happens constantly and is really severe you should see a doctor to make sure it isn't caused by an underlying condition.

Be sure to see your doctor immediately if you dizziness co-occurs with chest pain, loss of speech or a change in vision.
1 Additional Answer
Ask.com Answer for: why do i get light headed when i stand up
Why Do I Get Light Headed When I Stand Up?
Changing postures from sitting to standing too quickly drops blood pressure; if blood isn't pumped quickly enough back up to the head, dizziness or lightheadedness from lack of blood supply may occur.... More »
Difficulty: Easy
Source: www.ehow.com
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