THURSDAY, Sept. 4 (HealthDay News) -- The first direct proof of how osteoarthritis destroys cartilage has been discovered by University of Rochester Medical Center researchers.

They said their finding could lead to preventive treatments for a disease that affects almost 21 million aging Americans and is the leading cause of disability in the United States.

MONDAY, May 26 (HealthDay News) -- What would you do if you suddenly became dizzy and had trouble seeing? Watch and wait? Call 911?

Most Americans don't act on warning signs of stroke, including sudden dizziness or loss of balance or coordination and loss of vision in one or both eyes. Yet experts say early treatment could avoid devastating consequences, including death and disability.

A study presented at a recent American Stroke Association meeting found more than half of people experiencing stroke symptoms don't seek treatment.

THURSDAY, March 20 (HealthDay News) -- One year after suffering major trauma, many patients have moderately severe pain, a U.S. study finds.

By Alan Mozes EmpowHer's HealthDay Reporter MONDAY, Feb. 11 (HealthDay News) -- Among Americans living to the ripe old age of 100 and counting, it is the ability to delay the onset of disability, and not the onset of disease, that seems to secure a long life. A new study reveals that 32 percent of centenarians struggle with age-related illness for 15 years or more before hitting the 100 mark. Yet mental or physical disability is no more prevalent among this group than among centenarians who stave off disease until later in life.