Elevating your feet, staying active, and reducing salt intake are the most effective things you can do at home for swollen feet and ankles. Most swelling in the lower legs comes from fluid pooling due to gravity, prolonged sitting or standing, or excess sodium in your diet. The fixes are straightforward, but the details matter.
Elevate Your Feet Above Your Heart
Elevation is the fastest way to reduce swelling. The key is getting your feet above heart level, not just propping them on an ottoman. Lying on a couch or bed with your legs resting on two or three stacked pillows gets the angle right. Gravity then works in your favor, helping fluid drain back toward your core instead of pooling in your ankles.
Try to elevate for at least 20 to 30 minutes at a time, several times a day. If you work at a desk, even short elevation breaks during lunch or after work can make a noticeable difference. Sleeping with a pillow under your calves also helps prevent fluid from accumulating overnight.
Use Movement to Pump Fluid Out
Your calf muscles act as a pump for your circulatory and lymphatic systems. Every time they contract, they squeeze fluid upward through your veins and lymph vessels. Sitting or standing still for hours shuts that pump off, which is why long flights and desk jobs are notorious for causing puffy ankles.
Simple exercises can restart that pump without requiring a gym visit. Ankle pumps are the easiest: pull your toes up toward your shins, then point them toward the floor, repeating 5 to 10 times. Seated heel raises work the same muscles. Keep your toes on the floor and lift just your heels, again for 5 to 10 repetitions. If you’re able to stand, hold onto a counter or chair back and rise up onto the balls of your feet, then slowly lower back down. These exercises come from lymphedema treatment protocols at The Royal Marsden NHS Foundation Trust, and they’re effective precisely because they target the calf muscles that drive fluid drainage.
Walking is the most natural version of this. Even a 10-minute walk every hour or two keeps the pump working. If you’re stuck at a desk, flexing and circling your ankles under your chair is better than nothing.
Cut Back on Sodium
Sodium causes your body to hold onto water, and that extra fluid tends to settle in your feet and ankles. Most people eat well over 3,000 mg of sodium per day. For managing fluid retention, aiming for around 2,000 mg daily is a practical target. That’s roughly the equivalent of one teaspoon of table salt spread across everything you eat.
The biggest sources are rarely the salt shaker. Processed foods, canned soups, deli meats, restaurant meals, and condiments like soy sauce account for the bulk of sodium in most diets. Reading nutrition labels and cooking more meals at home are the two changes that move the needle most. You don’t need to hit a perfect number every day. Even a moderate reduction, like cutting out one or two high-sodium meals per week, can reduce how much fluid your body retains.
Compression Socks and Cold Soaks
Compression socks apply gentle, graduated pressure that helps push fluid back up your legs. They’re most effective when you put them on in the morning before swelling starts, rather than trying to pull them over already-swollen ankles. Knee-high socks with 15 to 20 mmHg of pressure are widely available at pharmacies and work well for mild everyday swelling.
Cold water soaks can also provide temporary relief by constricting blood vessels and reducing fluid leakage into tissues. Soaking in cool (not ice-cold) water for 15 to 20 minutes is a reasonable approach. Epsom salt baths are popular, but the science behind them is thin. There’s little research showing that magnesium sulfate absorbs through the skin in meaningful amounts. If a warm Epsom salt soak feels good, it’s unlikely to cause harm, but it’s the water temperature and the rest that are doing most of the work, not the salt itself.
Stay Hydrated (It Sounds Counterintuitive)
Drinking more water when you’re already swollen feels wrong, but dehydration actually makes fluid retention worse. When your body senses it’s not getting enough water, it holds onto what it has. Staying well hydrated signals your kidneys to release excess fluid rather than hoard it. Water also helps flush out sodium, which compounds the benefit.
When Swelling Signals Something Serious
Most foot and ankle swelling is harmless and responds to the strategies above. But certain patterns warrant prompt medical attention.
Swelling in one leg only is more concerning than swelling in both. About 40% of sudden single-leg swelling turns out to be a muscle strain or minor injury, but the primary concern is a blood clot (deep vein thrombosis). If one leg swells and also feels warm, painful, or looks reddish, get it evaluated. A clot that breaks loose can travel to the lungs, causing sudden shortness of breath, chest pain that worsens with breathing, a rapid pulse, dizziness, or coughing up blood. That’s a medical emergency.
Swelling in both legs is more commonly caused by chronic venous insufficiency, meaning the veins in your legs aren’t efficiently returning blood to your heart. Heart failure, kidney disease, and liver disease can also cause bilateral swelling, especially if it comes on suddenly or keeps getting worse despite home care. Medications are another frequent culprit: certain blood pressure drugs, hormone therapies, and anti-inflammatory medications can all cause fluid retention as a side effect.
During pregnancy, some ankle swelling is completely normal. What’s not normal is sudden swelling in your face and hands, rapid weight gain over a few days, or severe headaches. These can be signs of preeclampsia, a serious blood pressure condition that needs immediate medical attention.
What Doctors Can Do
If your swelling doesn’t improve with home measures or keeps coming back, a doctor can look for underlying causes. The workup typically involves checking your heart, kidneys, and liver function through blood tests, and sometimes an ultrasound of your leg veins to rule out clots or valve problems.
For persistent edema tied to an underlying condition, doctors sometimes prescribe diuretics, commonly called water pills. These medications help your kidneys flush out excess sodium and water. They’re effective but come with trade-offs, including more frequent urination, potential dehydration, and electrolyte imbalances, so they’re used when the cause of swelling justifies them rather than as a first-line fix for occasional puffiness.
Chronic venous insufficiency, which is the most common cause of long-term swelling in one or both legs, is typically managed with consistent compression therapy, regular movement, and sometimes procedures to address damaged vein valves. Skin changes like darkening, thickening, or ulceration around the ankles suggest venous disease that’s been progressing for a while.