How do diabetes and dementia develop? What is a stroke? How do blood-thinning medications work? These and many other questions are answered in this book in an easily understandable way. The authors, experienced teachers in home care, briefly and concisely describe the structure and functions of the human body as well as various processes related to the most common illnesses of those they care for. This provides essential foundational knowledge for the everyday work of home care assistants. Each chapter includes a knowledge check.