Harvard Heart Letter

After standing, a fall in blood pressure

Known as orthostatic hypotension, this condition can leave people dizzy and lightheaded. For some, it may also be a harbinger of heart disease. Have you ever felt a bit woozy just after standing up? When you transition from sitting to standing, gravity causes blood to pool in your legs. Sometimes — especially if you’re dehydrated or overheated — it takes your body a moment to push blood upward, causing a brief delay…

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