Most baby-boomers are not aging well, and as they enter their golden years, the burden and cost of their health care will only increase according to a new Emory University study that found only one in five adults has good, comprehensive mental and physical health.

Baby-boomers composed the largest demographic portion of the survey, and a majority of them fell within the "incompletely healthy" category, signaling that only a few are aging with their health intact, and many have the potential to develop serious illnesses, says Corey Lee Keyes, lead researcher and assistant professor of sociology at Emory. The study appears in the November/December issue of the "American Journal of Health Promotion."