Hendrik Strick, a recognized expert in the field of immunology, talks clearly and humorously about immunity - one of the most mysterious parts of our body. Where is our immune system located? Why does she sometimes overreact and how can you keep her safe and sound? What are these things called antibodies, and what is the difference between viruses and bacteria anyway? Hendrik Strick presents a guide to our immune system: with scientifically based information, presented in a popular and accessible way for the layman. The author explains which pathogens trigger our body's signaling system and why, for example, the herpes virus attacks precisely when we want to look our best. You will learn how many bacteria live in our mouths and why, despite this, kissing is good for our health; why the temperature rises and why vaccines are needed. The book also contains practical advice, following which you will be able to increase your body’s defenses. For whom the book will be of interest to anyone who is interested in health issues and wants to get an expert opinion.