When most people think of being wrinkle-free, their main concern is aesthetics. However, new research show that more wrinkles can be an indication of poor bone density. The study, part of the Kronos Early Estrogen Prevention Study, measured the amount and depth of wrinkles in certain areas of the body, and compared them with the bone density of the patients studied. The result was a noticeable association between fewer wrinkles and healthier bones. A lower bone density puts individuals at a higher risk for fractures and osteoporosis. The researchers did not identify the cause of the relationship between wrinkles and bone density, though they suspect it has to do with levels of collagen proteins in the body. While the utility of the results is disputed, perhaps the results of the study will encourage more patients to get their bone densities checked.