Sitting during long flights or standing all day can cause dependent edema — fluid pooling in the legs due to gravity
Usually improves with elevation and movement
✅ Often temporary and not serious.
2. 🤰 Pregnancy
Hormonal changes and increased blood volume can cause mild leg swelling
Most common in the third trimester
Should be monitored — sudden swelling in hands or face can signal preeclampsia
✅ Report rapid or one-sided swelling to your OB-GYN.
3. 💊 Medication Side Effects
Certain drugs can cause fluid retention:
Blood pressure medications (like calcium channel blockers)
Steroids
NSAIDs (ibuprofen, naproxen)
Diabetes medications (thiazolidinediones like pioglitazone)
Hormone therapy or birth control pills
✅ Talk to your doctor before stopping any medication.
4. 🧂 High Salt Intake
Eating too much sodium causes your body to retain water
Can lead to puffiness in legs, hands, and face
✅ Reducing salt often improves swelling within days.
⚠️ Serious Medical Conditions Linked to Leg Swelling
When edema is persistent, painful, or worsening, it could signal an underlying disease.
1. ❤️ Heart Failure
The heart can’t pump effectively, causing fluid to back up into the legs, lungs, and abdomen
Swelling is often worse at the end of the day
Other signs:
Shortness of breath (especially when lying flat)
Fatigue
Rapid weight gain
📊 Called peripheral edema — one of the most common signs of heart failure.
