99% of human blood vessels are said to be capillaries. With age, these tiny tubules break, becoming hollow "ghost" vessels that cause wrinkles in the skin. Scientists are now finding they are also tied to higher risks from age-related ailments, including osteoporosis and Alzheimer's disease. Using the latest in biological imaging and super-high-resolution 3D CGI, this program delves into the mechanism behind broken capillaries. It also examines how to slow down or even repair the damage to help people live longer, healthier lives.