Theresa Francis-Cheung is an accomplished writer who specialises in the areas of psychology, nutrition and women s health. She regularly contributes features on health to women s magazines such as "Red", "Prima" and "You and Your Wedding". Her books include "Worry: The Root of All Evil" and "Self-esteem: The Lazy Person s Guide!" as well as a number of books on managing PCOS with co-author Colette Harris.