Peripheral Artery Disease (PAD) is caused by a build-up of plaque in the arteries that reduces blood flow to the legs. PAD can cause leg pain with exercise that improves with rest. Left untreated, PAD increases the risk of leg amputation and heart attack or stroke. The document provides information on diagnosing and treating PAD, including through exercise, quitting smoking, medication to control risk factors, and potentially invasive procedures. It aims to educate people about PAD and empower them to manage their condition and risks.