Getting rid of that spare tire around your middle could help your heart in more ways than you might expect, according to a San Diego biotechnology company. Cytori Therapeutics has developed a machine that pulls stem cells and other regenerative cells out of fat so they can be re-injected into the body to repair tissue damaged by heart attack or disease. Several studies, including some in which Cytori scientists have participated, have shown that stem cells and other regenerative material from fat can help build blood supply and restore blood flow to cardiac muscle that has been damaged by a...