About the authors

Michael Mosley


Michael trained as a doctor at the Royal Free Hospital in London and after qualifying joined the BBC as a trainee assistant producer. Over the last 25 years he has made numerous science and history documentaries for the BBC, first behind the camera, more recently as a presenter. He was executive producer of QED, Trust Me I’m a Doctor and Superhuman. He worked with John Cleese, Jeremy Clarkson, Professor Robert Winston, Sir David Attenborough and Professor Alice Roberts. He devised and executive-produced the three most popular science or history programmes of the last decade: Pompeii- the last day, Supervolcano and Krakatoa.

As a presenter he has made a dozen series for the BBC, including Medical Mavericks, Blood and Guts, Inside Michael Mosley, Science Story, The Young Ones, Inside the Human Body and the Truth about Exercise.He is currently making three new series, as well as being a regular science presenter for the BBC’s One Show. He has won numerous awards, including being named Medical Journalist of the Year by the British Medical Association.

Mimi Spencer


For more than twenty years, Mimi Spencer has written features for national newspapers and magazines in the UK, including The Guardian, The Observer, The Times, Vogue and Harper’s Bazaar. As the Fashion Editor of the London Evening Standard, she won the British Fashion Journalist of the Year Award in 2000, and went on to edit the paper’s weekly title, ES Magazine.

Mimi had a column in You Magazine at the Mail on Sunday for over a decade, writing for three million weekly readers about fashion, beauty, food, lifestyle, diet and body shape. In 2009, drawing on her personal and career interest in women’s attitudes to weight loss, she wrote 101 Things to do Before You Diet (Doubleday/Rodale).

Today, she writes regularly on women’s issues and lifestyle for the Saturday Times, Marie Claire, Red and other magazines. She lives in Brighton on the south coast of England with her husband, two children, a small boat and an endlessly hungry dog.

Read the article that brought them together: Is the Intermittent Fasting diet a passing fad? Or a radical new way of thinking about food? (pdf version here).