A few months ago I wrote about Eva Saxl, a type 1 diabetic who managed to survive World War II in the Shanghai ghetto by making homemade insulin. After immigrating to the United States, Saxl became a spokeswoman for the American Diabetes Association. During the era in which Saxl lived, there was a serious stigma attached to having diabetes. As a result, most diabetics went to great lengths to hide their condition from others. Saxl’s willingness to speak openly about diabetes was revolutionary. As I researched Saxl’s life, I was...