Unfortunately, the book dragged. I wanted to know more, but kept putting this down in favor of other books.
My husband got sick of my repeated lament that the scientist in me wanted more science. In particular, the book lacks a Medina family tree that showing gene and disease status. I would have been satisfied with a diagram that anonymized the entries if the Medina family wanted to protect themselves and family members that had not specifically participated in the writing of the book. While who was tested, and what were the results are sprinkled throughout the book, it was hard to keep track of without a diagram.