Why You Feel Dizzy When You Stand Up
Dizziness upon standing often results from a drop in blood pressure as your body adjusts to gravity.
When you stand up quickly, gravity pulls blood downward into your legs, temporarily reducing blood flow to your brain. Your body normally compensates by increasing heart rate and constricting blood vessels to maintain adequate blood pressure. However, this response can lag or be insufficient, especially in cases of dehydration, medication use, or aging. The brain may then signal a lack of oxygen or blood flow, triggering dizziness. This is commonly called orthostatic hypotension. Factors like prolonged sitting, heat, or certain medications can exacerbate the condition. While occasional lightheadedness is normal, frequent episodes might indicate an underlying issue, such as heart problems or nerve dysfunction. Staying hydrated, moving slowly when standing, and wearing compression stockings can help mitigate symptoms. If dizziness persists or worsens, consulting a healthcare provider is advisable to rule out chronic conditions.