“The Diet of God” - as kashrut is sometimes called - the universal rules of nutrition prescribed by the Bible for the Jewish people, which the Jews themselves for centuries tried not to advertise. The book “Jewish Dietology, or Kosher Deciphered” for the first time provides the reader with the opportunity to get acquainted with all aspects of kashrut - from the origin and interpretation of the meaning of Jewish dietary laws to the latest achievements of modern medicine, confirming the absolute benefits of these laws. The practical section of the book is devoted to the universal nature of the laws of kashrut for human physical and mental health.