Swollen Legs & Ankles? Doctors Reveal the Real Cause (MUST SEE) If you’ve been battling swelling, heaviness, or tightness in your legs… The problem might not be what you think. Most people blame age, salt, or weight… But new research shows that poor lymphatic flow through your knees could be the real reason your legs hold onto excess fluid. When the “knee junction” becomes blocked, fluid builds up below it. This is what’s causing swelling, pressure, and that painful, heavy feeling that never see