What causes foot swelling in the elderly?

Generally, foot swelling in elderly individuals may be caused by age-related edema, dietary factors, drug-induced edema, kidney dysfunction, heart failure, or other reasons. If necessary, it is recommended to seek medical attention promptly. Specific causes are analyzed as follows:

1. Age-Related Edema

With advancing age, the elasticity of blood vessel walls may decrease and venous valve function may decline, potentially leading to impaired venous return, which can result in foot swelling in the elderly. Regular lower-limb exercises such as walking or tai chi are recommended to help improve circulation.

2. Dietary Factors

Excessive salt intake may lead to water and sodium retention in the body, a condition that is particularly pronounced in older adults with reduced kidney function, potentially causing foot swelling. Adjusting the diet to reduce salt intake is important in daily life.

3. Drug-Induced Edema

Long-term use of certain medications may cause drug-induced edema due to fluid retention, leading to foot swelling in the elderly. This may be accompanied by symptoms such as weight loss and dizziness. If a medication is suspected as the cause, the suspected drug should be discontinued as soon as possible. However, consult a physician before stopping any medication; the doctor will determine whether and when to discontinue the drug based on the patient's specific condition.

4. Kidney Dysfunction

Kidney dysfunction may be triggered by trauma, chronic sleep deprivation, or other factors, resulting in decreased renal excretory function, water and sodium retention, and protein loss in urine, thereby causing the aforementioned symptoms. It may be accompanied by reduced urine output and proteinuria. Patients should follow medical advice and take medications such as furosemide tablets, sodium bicarbonate tablets, and enalapril maleate tablets for treatment.

5. Heart Failure

Heart failure may be caused by genetic factors, excessive fatigue, or other reasons, leading to obstruction of venous return and triggering foot swelling in the elderly. It is often accompanied by symptoms such as chest tightness and shortness of breath. Under medical guidance, patients may take medications such as digoxin tablets, spironolactone tablets, and metoprolol tartrate tablets to improve cardiac function.

In daily life, individuals should pay attention to bodily changes, maintain moderate physical activity, eat a balanced diet, and avoid maintaining the same posture for prolonged periods to prevent discomfort such as foot swelling.