Biochem hackers claim that prevention of diseases and strengthening the body is more beneficial than treatment. They study various systems in the human body to understand how they work. The authors of the book — doctor Olli Soviairvi, a digitalization specialist Teemu Arina, and a nutrition expert Jaakko Halmetoya — explain biohacking in an accessible way, one of the most promising and controversial topics of our time. They offer a theory based on their experience and scientific research, and share simple practical recommendations.