Kenneth Rockwood is Professor of Medicine (Geriatric Medicine & Neurology) and Kathryn Allen Weldon Professor of Alzheimer Research at Dalhousie University. He is a leader in Canadian geriatric medicine, and in particular, has pioneered work on the definition, measurement and management of frailty. As a clinical and epidemiological researcher on the dementias, he has focused on novel risk factors (such as the protective effects of exercise) and on individualized outcome measurement. The latter has provided a practicable means whereby patients with Alzheimers disease, and their families, have a meaningful say in whether treatments for dementia are effective.