Most people ignore their feet until pain or discomfort forces attention. Yet swelling, color changes, warmth, or skin impressions can signal underlying health issues. Persistent or unexplained foot swelling is one of the clearest warning signs that something deeper may be happening.

Swollen feet, medically called edema, occur when excess fluid collects in the lower limbs. Gravity causes fluids to pool in the feet and ankles. Mild swelling can make shoes feel tight, while severe edema visibly enlarges the feet and ankles. Temporary causes include long periods of standing, warm weather, minor injuries, or tight shoes.

Common causes of swelling include poor circulation. Sedentary lifestyles, long hours of sitting, smoking, or vascular issues can slow blood flow and allow fluid to accumulate. Elevating the legs or moving regularly may help, but chronic issues require medical evaluation.

Heart, kidney, or liver problems can also cause edema. Heart weakness can reduce blood circulation, leading to swelling in both feet. Kidney dysfunction may cause fluid retention, while liver damage can allow fluid to leak from blood vessels. Accompanying symptoms like shortness of breath, fatigue, or jaundice are red flags.

Medications such as steroids, hormone therapy, and certain blood pressure drugs may contribute to swelling. Pregnancy increases blood volume and pressure on vessels, which is usually normal, but sudden swelling in hands or face may indicate preeclampsia.

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