In his new book, Sergey Malozyomov—known as a popular TV presenter and a doctor—explains in an accessible way how the human immune system works and methods to strengthen it. He looks at how medicines, herbs, and certain foods can stimulate immunity, based on research results. The book also offers recommendations for changing your lifestyle to reduce the risk of allergic reactions and reveals what supplements doctors prefer in order to get sick less often. In addition, it discusses attitudes toward vaccines, with examples of their use in different countries and advice on when they are worth avoiding.