Most people overlook their feet, but “your feet can reveal early signs of what’s happening inside your body.” Changes like swelling, tightness, warmth, or skin marks are not always harmless. While temporary swelling can come from long days, heat, or tight shoes, ongoing or unexplained swelling may signal a deeper health issue. As the article warns, “Your feet aren’t just tired—they may be trying to warn you.”

Swollen feet, also called edema, happen when excess fluid collects in lower tissues. Gravity makes the feet and ankles a common place for this to show up first. Mild swelling can be normal, but swelling that appears suddenly, affects only one foot, worsens over time, or comes with pain or redness should not be ignored.

Several conditions can cause persistent swelling. Poor circulation can allow fluid to pool in the feet, while heart problems may lead to swelling in both feet along with fatigue or shortness of breath. Kidney and liver issues can also disrupt fluid balance, causing swelling in the feet and elsewhere. Medications, pregnancy, injuries, infections, and chronic vein problems are other common causes.

Certain signs are clear red flags. Seek medical care if swelling appears suddenly, affects one foot, comes with chest pain or breathing trouble, or does not improve with rest. “Foot swelling combined with breathing difficulty or chest discomfort may indicate a medical emergency.”

While simple steps like elevating your feet or moving regularly may help mild swelling, lasting or worsening symptoms need medical evaluation. Swelling is a symptom, not a diagnosis, and paying attention early can protect your health.