Personalized medicine is what this book is about-tailoring your lifestyle, food, medicines, treatments, and reproductive choices to your genetic signature. According to Dr. Andrew Y. Silverman, MD, PhD, 'The desire to influence the sex of the next child is probably as old as recorded history. 'Gender selection is possible because of the way in which sex is determined by our chromosomes. Dr. Ericsson devised patented methods by which X and Y sperm can be separated through filtering processes. Sperm are 'layered over a column of human serum albumin, and they swim down the gradient where they are collected in the bottom layer. 'The fraction of sperm that contains the male (Y) bearing sperm is used for insemination if a boy is desired. It is effective 70-75% of the time. 'The fraction of sperm that contains the female (X) bearing sperm is used for insemination if a girl is desired. It is effective 70-72% of the time. Use personalized medicine more effectively. Empower consumers by interpreting DNA testing and learning more about infant gender choice by genetics. | Infant Gender Selection & Personalized Medicine by Anne Hart, Paperback | Indigo Chapters