Dr Nadine Burke Harris is the Surgeon General of California, the founder and CEO of Center for Youth Wellness in San Francisco, California and the author of Toxic Childhood Stress (originally published as The Deepest Well). She has earned international attention for her innovative approach to addressing adverse childhood experiences as a risk factor for adult disease, such as heart disease and cancer. Dr Burke Harris serves as an expert advisor on the Too Small To Fail initiative championed by Hillary Clinton and the Clinton Foundation, and has been named as a leader in the field of understanding childhood trauma by the likes of Oprah Winfrey (author of What Happened to You). Dr Burke Harris is also an advisor to California Governor Jerry Brown and she has earned the Arnold P. Gold Foundation Humanism in Medicine Award presented by the American Academy of Pediatrics.