At first, it might seem harmless — a little puffiness around the ankles after a long day. Maybe your shoes feel tighter than usual. Maybe you notice faint indentations in your skin when you press your finger against it. Swollen feet are common, and often temporary. But in some cases, they can be a clear sign that something deeper is going on inside your body.
Swelling in the feet and ankles, medically known as edema, happens when excess fluid becomes trapped in the body’s tissues. Gravity naturally pulls fluid downward, which is why swelling is most noticeable in the lower legs and feet. While occasional swelling can result from standing too long, hot weather, or minor injuries, persistent or sudden swelling should never be ignored.
Common Causes of Swollen Feet
One of the most frequent causes is simple fluid retention. Long hours of sitting or standing — especially during travel or work shifts — can slow circulation, allowing fluid to pool in the lower extremities. Pregnancy can also cause swelling due to increased blood volume and pressure on veins.
However, swollen feet can also signal more serious health concerns:
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