Rosemary Conley CBE is one of the world's most successful diet and fitness experts, with fifty years' experience in helping people to lose weight and get fitter. Rosemary shot to fame in 1988 when she published The Hip & Thigh Diet, which went on to become a two-million copy bestseller. Since then, Rosemary's books and videos have sold nearly nine million copies, the most recent being The 28-day Immunity Plan, published by Penguin in 2021.

In 2001 Rosemary was given the Freedom of the City of Leicester, the first woman ever to be granted this honour, and in 2004 she was awarded a CBE by the Queen for services to the fitness and diet industries. She now devotes most of her time to encouraging health and wellbeing among older people through a variety of radio and online initiatives.

Rosemary is an active Christian and is often called upon to give her testimony at events around the country. She also supports numerous charities and is most actively involved as Patron of Steps Conductive Education Centre, to which all royalties from the sales of this book are being donated.