Swollen ankles usually respond well to a few simple strategies you can start at home: elevating your legs, moving more, wearing compression socks, and cutting back on salt. Most ankle swelling is caused by fluid pooling in your lower legs after long periods of sitting or standing, and the fix is essentially helping that fluid drain back toward your heart. If the swelling is new, only in one leg, or accompanied by chest pain or shortness of breath, that’s a different situation requiring urgent medical attention.
Elevate Your Legs Above Your Heart
Gravity is the main reason fluid collects in your ankles. When you sit or stand for hours, blood and lymph fluid naturally settle downward. The simplest counter to this is elevation: lie down and prop your legs on pillows so your ankles sit above the level of your heart. This lets gravity work in reverse, pulling fluid back toward your core where your body can process and redistribute it.
Aim for about 15 minutes per session, three to four times a day. You don’t need to be perfectly flat. A recliner works, or you can stack two or three pillows at the foot of your bed. The key is getting your ankles genuinely higher than your chest, not just resting them on an ottoman at hip height. Many people notice a visible difference after just a day or two of consistent elevation.
Use Compression Socks
Compression socks apply graduated pressure to your lower legs, squeezing tightest at the ankle and loosening toward the knee. This mimics the pumping action your calf muscles provide when you walk, pushing fluid upward through your veins even when you’re sitting still. For general ankle swelling, a pressure rating of 20 to 30 mmHg is a common starting point. Lighter “fashion” compression socks or basic copper-infused options often don’t provide enough pressure to make a meaningful difference.
Put them on first thing in the morning before swelling has a chance to build. If you wait until your ankles are already puffy, the socks will be harder to pull on and less effective. If 20 to 30 mmHg socks don’t seem to help after a week or two, a doctor can prescribe a higher grade (30 to 40 mmHg), which requires a proper fitting to ensure they work without being uncomfortably tight.
Cut Back on Sodium
Salt makes your body hold onto water, and that extra fluid often shows up first in your ankles and feet. If you’re dealing with persistent swelling, keeping your sodium intake below 2,000 mg per day is a practical target. For context, a single fast-food meal can easily contain 1,500 mg or more, and many canned soups, frozen dinners, and deli meats pack 600 to 900 mg per serving.
You don’t need to eliminate salt entirely. Focus on the biggest sources: processed and restaurant food accounts for roughly 70% of the sodium most people consume. Cooking at home with fresh ingredients and seasoning with herbs, citrus, or spices instead of salt can cut your daily intake dramatically without making every meal feel bland. Reading nutrition labels becomes important here, since many foods that don’t taste salty (bread, cereal, condiments) still contain surprising amounts.
Move Throughout the Day
Your calf muscles act as a pump for your circulatory system. Every time you take a step, those muscles squeeze the veins in your lower legs and push blood back up toward your heart. When you sit at a desk or on a plane for hours without moving, that pump shuts off and fluid accumulates.
If you have a sedentary job, set a reminder to stand and walk for two to three minutes every hour. Even small movements help: flexing and pointing your feet, making circles with your ankles, or doing calf raises at your desk all activate that pumping mechanism. A short walk after meals serves double duty, both reducing swelling and helping with digestion and blood sugar regulation.
Check Your Shoes and Clothing
Tight shoes can act like a tourniquet around your foot, compressing blood vessels and slowing circulation. When blood and lymph fluid can’t flow freely back up the leg, it pools in the ankle. Shoes that pinch, squeeze, or restrict natural foot movement are common culprits, especially narrow dress shoes, pointed-toe heels, and stiff boots that don’t allow your foot to flex while walking. That flexing motion is part of what helps pump fluid out of your lower legs with each step.
Opt for shoes with a roomy toe box and enough flexibility to let your foot move naturally. If your feet tend to swell during the day, shop for shoes in the afternoon when your feet are at their largest. Tight socks with constrictive elastic bands around the calf can also impede drainage, so avoid anything that leaves deep marks on your skin.
Consider Magnesium
Magnesium plays a role in regulating fluid balance, and some people find that supplementing with 200 to 400 mg per day helps reduce ankle swelling. This is especially worth trying if your diet is low in magnesium-rich foods like leafy greens, nuts, seeds, and whole grains. Cleveland Clinic physicians have recommended this range as a reasonable starting dose for people with swollen feet and ankles. If you have kidney or heart problems, check with your doctor first, since your kidneys are responsible for clearing excess magnesium and may not handle the extra load well.
Medications That Cause Ankle Swelling
If your ankle swelling started around the same time you began a new medication, the drug itself may be the cause. Blood pressure medications called calcium channel blockers are well-known for triggering ankle edema, with somewhere between 1% and 15% of people on these drugs experiencing it. The swelling happens because these medications relax blood vessels, which can allow more fluid to leak into surrounding tissue. Certain diabetes medications, steroids, and hormonal treatments (including birth control and hormone replacement therapy) can also cause fluid retention in the ankles.
Don’t stop a prescribed medication on your own, but do mention the swelling at your next appointment. In many cases, switching to a different drug in the same class or adding a low-dose companion medication resolves the problem without sacrificing the benefit the original drug was providing.
When Swelling Signals Something Serious
Most ankle swelling is harmless and related to gravity, salt, or inactivity. But certain patterns warrant immediate attention. Swelling in only one leg, especially if it’s accompanied by warmth, redness, or pain in the calf, can indicate a blood clot in a deep vein. This is a medical emergency because the clot can break loose and travel to the lungs.
Swelling in both legs that develops gradually and doesn’t fully resolve with elevation may point to problems with the heart, kidneys, or liver. These organs all play roles in managing fluid balance, and when one of them struggles, fluid tends to accumulate in the lowest parts of the body first. Call emergency services immediately if ankle swelling is accompanied by shortness of breath, chest tightness or pain, a racing heartbeat, lightheadedness, or coughing up blood. These symptoms together can signal a blood clot in the lungs or acute heart failure, both of which need hospital treatment right away.