Poynteronline, Jan. 9, 2007 The Beaumont Enterprise examines how prisons are filling up with old folks. Not only are seniors the fastest-growing age group in prison, but their health and dietary needs can make them expensive to care for.  The story points out: The 3,534 inmates older than 60, who are the fastest-growing group in Texas' prisons, use health care resources at a rate of four or five times that of younger offenders, according to statistics provided by the University of Texas Medical Branch, which provides health care for all prison inmates. Dr. Owen Murray, chief physician executive of correctional managed care at UTMB, said the increase in older inmates arises from a combination of longer sentences and the number of older people who are being convicted.