This small book talks about very important things - about the connection between genetics and medicine and about a new direction in genetics - epigenetics. The author, a doctor and a scientist, fascinatingly, with examples from his own practice and from the history of science, talks about what genetics is today, how our genes can change and how these changes are inherited by subsequent generations. The reader will learn how the memory of serious psychological trauma experienced by parents is passed on to children, how food can affect the functioning of genes, slow down aging or cause dangerous diseases, what close-set eyes mean, as well as many other amazing things. The author says: using modern knowledge about genes and the laws of their expression, we will be able to control our lives and our health - we have opportunities that our parents never dreamed of.