Mònica Peitx is a paediatrician specialising in endocrinology and nutrition, and she works in Barcelona. In 2008 she wrote her first story, for overweight and obese children, Max’s Story. She has followed this with Aina’s Story about diabetes, and Quim’s Story that is about children’s sizes. Mía Grows Up leaves the world of medical problems to address the fascinating physiological process of puberty.