Old age is associated with a number of medico-social problems such as: hypertension, diabetes mellitus, thyroid disorders, osteoarthritis, tremor, pain, gait and balance impairment, incontinence, urinary tract infection, sarcopenia, osteoporosis, polypharmacy, pressure ulcers, sleeping problems, cardiocerebrovascular disorders, fluid and electrolyte disturbance, nutritional disorders, immunization and disease prevention rehabilitation and care. The management of these problems differs significantly between younger and older adults. All of these problems are evaluated in this book in two parts with the contributions of experienced clinicians and researchers. In addition, cellular aging, comprehensive geriatric assessments, and medicolegal and ethical principles in geriatric medicine are also evaluated. This book will be a valuable tool for all clinicians involved in the management of elderly people.