This book will become an indispensable medical reference in your home. Here you will find a specific answer to almost any health-related question. The creation of this book was based on questions from our TV viewers, and all the advice was successfully applied by numerous heroes of the program “About the Most Important Thing”, led by the famous doctor Sergei Agapkin. How to quickly reduce blood pressure if there are no medications at hand? How to get rid of a headache, if it caught you on the road? What will help identify the disease at the earliest stages? How to improve the quality of life and learn to live with a chronic disease, avoiding its exacerbations? What actions should be taken in the event of an acute attack? Hundreds of symptoms of various diseases that may bother you are described here you and your loved ones, and numerous recommendations are given on what to do in these cases. Simple, accessible and essential information, received on time, can help avoid serious health problems.