The world population is ageing and the prevalence of age-related neurological diseases, such as stroke and neurodegenerative diseases, are continuously increasing. These diseases lead not only to impairment of motor function but also to the development of non-motor disorders, such as depression. In this book, the authors present current research in the study of depression in the elderly. Topics discussed include the links between geriatric depression and dementia; the physiological, psychological, social and environmental factors related to depression; depression in older adults with chronic kidney disease; and, physical activity and its anti-depressant effects for older people with depression.