A cutting-edge treatment developed in Japan helps patients' bodies grow new blood vessels. Complications from diabetes and other diseases can compromise blood flow to the extremities. If this causes the cells to die, amputation can become necessary. In a clinical trial now in progress, injecting patients with cultured cells taken from their own blood has halted necrosis and saved limbs. In this episode, we'll also share some simple exercises for activating blood vessels and promoting better circulation.