Swollen feet and ankles usually respond well to a combination of elevation, movement, compression, and dietary changes. Most cases stem from fluid pooling in the lower legs after prolonged sitting or standing, and simple adjustments can make a noticeable difference within hours. The specific approach that works best depends on what’s causing the swelling in the first place.
Why Feet and Ankles Swell
Swelling in the feet and ankles happens when excess fluid accumulates in the tissue beneath the skin. Your body constantly moves fluid between blood vessels and surrounding tissue, and several forces keep this exchange in balance: blood pressure pushing fluid out, proteins in the blood pulling it back in, and the lymphatic system draining whatever’s left over. When any part of this system gets overwhelmed or sluggish, fluid builds up and gravity pulls it downward into your feet and ankles.
The most common cause in adults over 50 is venous insufficiency, where the veins in the legs lose their ability to efficiently push blood back up toward the heart. The swelling typically worsens after long periods of sitting or standing and improves with elevation. Pregnancy is another frequent cause, driven by an increase in overall blood volume and pressure on pelvic veins. Other contributors include high salt intake, medication side effects (especially from blood pressure drugs and anti-inflammatory medications), and reduced physical activity.
Elevate Your Legs (Even a Little)
Elevation is the simplest and fastest way to reduce swelling. Raising your legs above heart level lets gravity work in your favor, helping fluid drain back toward your core. But you don’t need to prop your legs dramatically high to get results. Research on post-surgical ankle swelling found that elevating the leg just 10 centimeters (about 4 inches) on a pillow produced swelling reduction comparable to elevating it 30 centimeters, and the lower position was significantly more comfortable.
Even 20 minutes of elevation can produce measurable changes in leg volume. For the best results, try to elevate several times throughout the day rather than doing one long session. Lying on the couch with your feet on a pillow or two works well. If you’re at a desk, even resting your feet on a low stool can slow the rate of fluid accumulation, though lying down with legs raised is more effective.
Move Your Ankles and Calves
Your calf muscles act as a pump for the veins in your lower legs. Every time the calf contracts, it squeezes blood upward through the veins and back toward the heart. When you sit or stand still for hours, that pump barely activates, and fluid pools in your feet.
Ankle pumps are one of the easiest exercises to counteract this. Sit or lie with your legs extended, then alternately point your toes toward your knees and away from you, moving as far as you comfortably can in each direction. Do this for two to three minutes, and repeat two to three times per hour when you’re sedentary. Walking is even better if it’s an option, since each step engages the full calf pump. Even short walks of five to ten minutes can help move fluid out of the lower legs.
Try Compression Stockings
Compression stockings apply gentle, graduated pressure to your lower legs, with the tightest squeeze at the ankle and decreasing pressure moving upward. This design helps push fluid back into circulation and prevents it from settling in your feet.
You don’t need heavy-duty medical compression to see a benefit. Stockings in the 10 to 15 mmHg range are effective at preventing and reducing swelling caused by prolonged sitting or standing. This is the lightest category, available without a prescription at most pharmacies. Stockings in the 15 to 20 mmHg range offer slightly more support and are a good choice for people who already have noticeable daily swelling. Higher-pressure stockings (20 to 30 mmHg) appear to be particularly effective for people who sit most of the day, though they’re tighter and take some getting used to.
Put compression stockings on in the morning before swelling starts, since they’re harder to pull on over already-swollen ankles. Knee-high styles are sufficient for most people with foot and ankle swelling.
Cut Back on Salt
Sodium causes your body to hold onto water. When you eat a salty meal, your kidneys retain extra fluid to keep sodium concentrations balanced, and that extra fluid can show up as puffiness in your feet and ankles. Reducing sodium intake to around 2,000 mg per day is a widely used guideline for managing fluid retention. For reference, a single teaspoon of table salt contains about 2,300 mg of sodium, and most processed and restaurant foods are loaded with it.
The biggest sodium sources for most people aren’t the salt shaker but packaged foods: canned soups, deli meats, frozen meals, bread, condiments, and fast food. Reading nutrition labels and choosing lower-sodium versions of staple foods can make a significant dent. Potassium-rich foods like bananas, sweet potatoes, and leafy greens can also help your kidneys excrete excess sodium more efficiently.
Stay Hydrated
It sounds counterintuitive, but drinking enough water actually helps reduce swelling rather than making it worse. When your body senses dehydration, it responds by releasing hormones (primarily one called vasopressin) that tell your kidneys to conserve water, producing smaller amounts of concentrated urine. This keeps more fluid in your system. When you’re well hydrated, the opposite happens: your brain signals the kidneys to release excess water freely, and fluid balance normalizes.
Your kidneys also function more efficiently with adequate water. When forced to concentrate urine due to low water intake, the kidneys work harder and expend more energy. Over time, this added stress can reduce their ability to manage fluid balance effectively. There’s no magic number for daily water intake since it varies by body size, activity level, and climate, but consistently drinking throughout the day rather than letting yourself get thirsty is a practical target.
Other Remedies Worth Trying
Soaking swollen feet in cool water can temporarily reduce swelling by constricting blood vessels near the surface. Epsom salt baths are popular, and while the evidence for magnesium absorption through the skin is limited, many people find the warm water and gentle pressure soothing. Gentle massage, working from the feet upward toward the knees, can help push fluid back into circulation manually.
Sleeping with a pillow under your lower legs keeps fluid from pooling overnight. If you wake up with normal ankles but they swell as the day goes on, that pattern points to gravity-related fluid accumulation and suggests compression stockings and regular movement breaks will help the most. Avoiding tight clothing around the thighs or waist, which can restrict blood flow returning from the legs, is another easy fix people often overlook.
When Swelling Is a Warning Sign
Most foot and ankle swelling is harmless, especially when it affects both sides equally and improves with elevation. But certain patterns signal something more serious. Swelling in only one leg, particularly when accompanied by pain, warmth, or redness along the calf, is a classic presentation of a deep vein thrombosis (blood clot). Specific red flags include tenderness along the deep veins of the leg, a calf that measures 3 cm or more larger than the other side, and pitting edema (where pressing a finger into the skin leaves a temporary dent) confined to one leg.
Sudden swelling in both legs paired with shortness of breath could indicate a heart or kidney problem. Swelling that doesn’t improve at all with elevation, or that progressively worsens over weeks, also warrants medical evaluation. Chronic venous insufficiency can eventually cause skin changes, including a reddish-brown discoloration on the lower legs from iron deposits in the tissue, and in advanced cases, open sores that are slow to heal. If you notice any of these patterns, getting evaluated sooner rather than later leads to better outcomes.