Swollen feet usually result from fluid pooling in the tissue of your lower legs, and in most cases you can bring the swelling down with a combination of elevation, movement, compression, and dietary changes. The technical term is peripheral edema, and it happens when fluid leaks out of tiny blood vessels faster than your lymphatic system can drain it back. Here’s what actually works to reduce it and keep it from coming back.
Elevate Your Legs Above Your Heart
The single fastest way to reduce foot swelling is gravity. Lying down and propping your legs up so your feet sit above the level of your heart lets fluid drain back toward your core instead of settling in your ankles. Aim for about 15 minutes at a time, three to four times a day. A stack of pillows or the arm of a couch works fine. If you can only manage it once, do it at the end of the day when swelling peaks.
Move Your Ankles and Calves Regularly
Your calf muscles act as a pump that pushes blood back up through your veins. When you sit or stand still for hours, that pump shuts off and fluid accumulates. Ankle pumps are the simplest fix: while sitting or lying down, point your toes toward your knees, then away from you, alternating back and forth for two to three minutes. Repeat this two to three times per hour, especially during long flights, car rides, or desk work.
Walking is even better. A 10-minute walk engages the full calf pump and gets fluid moving. If your job keeps you seated, set a timer to stand and walk around every 30 to 45 minutes. If you use a standing desk, don’t stand in one place for hours either. Prolonged standing can worsen leg swelling just as much as sitting. The key is alternating positions throughout the day.
Use Compression Socks
Compression socks apply graduated pressure to your legs, squeezing tightest at the ankle and loosening as they go up. This helps push fluid upward and prevents it from pooling. They come in different pressure levels measured in mmHg:
- 15 to 20 mmHg (mild): good for everyday swelling from sitting or standing too long, travel, or very early edema
- 20 to 30 mmHg (moderate): the most commonly recommended range for persistent swelling
- 30 to 40 mmHg (firm): typically used for more significant swelling or lymphedema that doesn’t respond to lighter compression
Start with 15 to 20 mmHg if you’ve never worn them before. Put them on first thing in the morning before swelling builds. They should feel snug but not painful, and you shouldn’t wear them to sleep unless specifically told to.
Cut Back on Sodium
Excess sodium causes your body to hold onto water, and much of that extra fluid ends up in your feet. The American Heart Association recommends staying under 1,500 mg of sodium per day, though many guidelines suggest 2,000 mg as a practical ceiling. For context, a single fast-food meal can easily contain 1,500 mg or more.
The biggest sodium sources aren’t the salt shaker. They’re processed and packaged foods: deli meats, canned soups, frozen meals, soy sauce, bread, and restaurant dishes. Reading labels and cooking more at home gives you far more control. You don’t need to eliminate salt entirely, but cutting your intake by even a third can make a noticeable difference in how much your feet swell.
Stay Hydrated
It sounds counterintuitive, but drinking more water can reduce swelling. When you’re mildly dehydrated, your body releases hormones that signal your kidneys to conserve water, which leads to more fluid retention. When you drink enough, those hormones drop. Your kidneys begin producing more urine within about 30 minutes of drinking a large glass of water, flushing out excess sodium and the fluid that comes with it. Consistent water intake throughout the day keeps this system running smoothly.
Check Your Medications
Several common drug classes cause foot swelling as a side effect. Blood pressure medications called calcium channel blockers are one of the most frequent culprits. Others include NSAIDs like ibuprofen and naproxen, steroids, certain diabetes medications, nerve pain drugs, and some antipsychotics. If your swelling started or worsened around the time you began a new medication, that connection is worth discussing with your prescriber. Don’t stop any medication on your own, but a dose adjustment or switch to a different drug in the same class often resolves the problem.
Swollen Feet During Pregnancy
Some degree of foot and ankle swelling is normal in pregnancy, especially in the third trimester. The extra blood volume and the pressure of the uterus on pelvic veins slow the return of fluid from your legs. Elevation, compression socks, and staying active all help.
What isn’t normal is sudden swelling in your face or hands, particularly if a ring that used to fit becomes tight. These are more specific signs of preeclampsia, a serious blood pressure condition that develops after 20 weeks. Other warning signs include a persistent headache that doesn’t respond to medication, visual changes like blurring or seeing spots, and pain in the upper right side of your abdomen. Preeclampsia requires immediate medical evaluation because it can progress rapidly.
When Swelling Signals Something Serious
Most foot swelling is harmless and responds to the strategies above. But certain patterns point to something that needs medical attention. Swelling in only one leg, especially if it’s accompanied by pain, warmth, or redness in the calf, can indicate a blood clot in a deep vein. This is a medical emergency.
Swelling in both legs that develops gradually and doesn’t fully resolve overnight can be a sign of heart, kidney, or liver problems. In heart failure, the heart can’t pump efficiently enough, so pressure builds in the veins and pushes fluid into the tissue. Kidney disease reduces your body’s ability to excrete sodium and water. Liver disease lowers production of a protein that keeps fluid inside blood vessels, letting it leak out into surrounding tissue.
If your swelling is new and persistent, leaves a visible dent when you press on it for several seconds, or comes with shortness of breath, pay attention. These patterns deserve a workup to rule out an underlying condition rather than just symptom management at home.