Why Do I Get Dizzy When I Stand Up?
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Why Do I Get Dizzy When I Stand Up?
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Why do we sometimes feel dizzy or see everything go dark for a few seconds after standing up quickly? In this episode, we explore how gravity affects circulation and what the body does to keep enough blood flowing to the brain when we move from lying or sitting to standing. We explain how pressure sensors detect the change, why the heart speeds up, how blood vessels adjust automatically, and why dehydration or heat can make the sensation more noticeable. We also clarify what orthostatic hypotension is and why dizziness, vertigo, and fainting are not exactly the same thing.
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