Three IDIBAPS investigators, Marcelina Párrizas, Rosa Gasa, Perla Kaliman, decided to design a book to provide a comprehensive view of how lifestyle affects chromatin and, as a result, gene function and ultimately organismal fitness. The result is “Epigenetics of Lifestyle”, a book with the latest and most significant research in the field of epigenetics and lifestyle. It includes chapters devoted to describe the epigenetic impact of nutrition, stress, addiction, exposure to chemicals and pollutants and how some of these epigenetic marks regulate brain functions such as learning and memory.