Forbes (10/30) contributor Alice G. Walton writes that a new study published in the American Journal of Preventive Medicine found that “excessive TV-watching is linked to mortality from diseases researchers already knew to be linked to it, like cancer and heart disease, but also to some new ones, like COPD and Parkinson’s disease.” The study, “which was carried out by a team at the National Cancer Institute,” found that “people who watched 3-4 hours of TV had a 15% greater risk of mortality overall.”