(2 of 2)
Thousands of researchers are searching for the cause, but the answer still eludes them. Autopsies of victims turn up characteristic brain lesions and abnormal accumulations of the protein beta amyloid. It's unclear, though, whether the telltale protein is a cause or effect of the disease. Researchers are now trying to prove that certain genes increase susceptibility.
Reagan's act of candor will undoubtedly raise public awareness of Alzheimer's and give support for research a powerful boost. In that way, he will walk in distinguished company once again. Franklin Roosevelt launched the March of Dimes that ultimately conquered polio. Dwight Eisenhower's frankness about his heart disease changed the way the world treated this affliction. The publicized bouts of Betty Ford and Nancy Reagan with breast cancer led thousands of women to undergo mammograms.
Ronald Reagan's successful battles with ill health over the years have been an inspiration to all, even those who disagreed with his politics. He may not be able to win this battle, but the way he's fighting it -- with candor and courage -- could be one of his most important legacies.