Swollen feet usually respond well to a combination of elevation, movement, and simple changes to your daily routine. The swelling happens when fluid builds up in the tissues of your feet and ankles, a condition called edema. Most of the time it’s temporary and manageable at home, but certain patterns of swelling signal something more serious that needs medical attention.
Elevate Your Legs Above Your Heart
The single most effective thing you can do right now is lie down and prop your feet up so they’re above the level of your heart. This lets gravity pull trapped fluid back toward your core, where your body can process and eliminate it. Keep your legs elevated for about 15 minutes at a time, and aim to do this three to four times throughout the day. A stack of pillows or a wedge cushion works well. If you only do one thing on this list, make it this one.
Cut Back on Sodium
Salt causes your body to hold onto water, and that extra fluid tends to pool in your feet and ankles. The average American takes in about 3,700 mg of sodium per day, which is well above the 2,300 mg general recommendation. The American Heart Association suggests an even lower target of 1,500 mg per day. For people who already have heart failure or chronic kidney disease, guidelines typically recommend staying under 2,000 mg daily.
The biggest sodium sources aren’t the salt shaker on your table. They’re processed foods, restaurant meals, canned soups, deli meats, and sauces. Reading nutrition labels and cooking more meals at home are the most practical ways to bring your intake down. Many people notice a visible difference in swelling within a few days of reducing salt.
Try Compression Stockings
Compression stockings apply gentle, graduated pressure to your lower legs, which helps push fluid upward and prevents it from settling in your feet. They come in different pressure levels measured in mmHg:
- 15 to 20 mmHg: Good for mild, achy, slightly swollen legs and everyday use.
- 20 to 30 mmHg: Better for mild edema that’s more persistent.
- 30 to 40 mmHg: Designed for moderate to severe edema and lymphedema, typically fitted by a professional.
For the best fit, measure your ankles at the thinnest point and your calves at the thickest point. Take measurements first thing in the morning, when swelling is at its lowest. Shoe size also factors into sizing. If you’re dealing with more than mild puffiness, consider getting fitted by a trained fitter who can match the compression level to your needs.
Move More Throughout the Day
Sitting or standing in one position for long stretches lets fluid collect in your lower legs. Even small movements, like flexing your ankles, circling your feet, or taking a short walk every hour, activate the calf muscles that act as a pump to push fluid back up through your veins. If you work at a desk, setting a timer to get up and move every 30 to 60 minutes can make a noticeable difference by the end of the day.
Check Your Medications
Several common medications cause foot and ankle swelling as a side effect. Blood pressure drugs called calcium channel blockers (such as amlodipine) are among the most frequent culprits. They work by relaxing blood vessels, but that relaxation can increase pressure in tiny capillaries and push fluid into surrounding tissues. Diabetes medications in the thiazolidinedione class (like pioglitazone) cause the body to retain sodium and fluid, which also leads to swelling.
If your swelling started or worsened after beginning a new medication, that connection is worth bringing up with whoever prescribed it. Don’t stop taking a prescribed medication on your own, but your doctor may be able to adjust the dose or switch to an alternative with fewer side effects.
Protect Swollen Skin
Swollen feet are more vulnerable to injury than you might expect. The stretched skin is more prone to cracking, and even small cuts or scrapes can become infected. Keep the skin moisturized with lotion or cream, and always wear socks and shoes when your feet are swollen. Keeping the area clean and dry between moisturizing helps prevent breakdown.
Swelling During Pregnancy
Some foot swelling during pregnancy is completely normal, especially in the third trimester. Your body retains more fluid, and the growing uterus puts pressure on veins that return blood from your legs. Elevation, gentle walking, and staying hydrated all help.
What’s not normal is sudden, severe swelling after the 20th week of pregnancy, particularly if it comes with headaches, blurred vision, dark spots in your vision, or rapid weight gain. These are warning signs of preeclampsia, a condition involving high blood pressure and protein in the urine that can become dangerous quickly. Preeclampsia requires immediate medical evaluation.
When Swelling Signals Something Serious
Most foot swelling is harmless, but certain patterns point to conditions that need prompt attention. Swelling in only one leg, especially when paired with calf pain, cramping, warmth, or a change in skin color to red or purple, can indicate a deep vein thrombosis (DVT), which is a blood clot in a deep vein. A clot can break free and travel to the lungs, causing a pulmonary embolism.
Seek emergency care if you experience sudden shortness of breath, chest pain that worsens when you breathe deeply or cough, a rapid pulse, dizziness, fainting, or coughing up blood. These are signs of a pulmonary embolism.
Persistent swelling in both feet that doesn’t improve with elevation and salt reduction can also be a sign of heart, kidney, or liver problems. One way to get a quick read on what type of swelling you have: press a finger into the swollen area for a few seconds. If the indent stays after you release (called pitting edema), it often points to fluid overload from conditions like heart failure or vein problems. If the skin bounces right back and feels firm or spongy (non-pitting edema), it may suggest lymphedema or a condition called lipedema, where fat tissue distributes abnormally. Both types benefit from professional evaluation if they persist.