Zoe Harcombe's passion is obesity and understanding why when people want to be slim more than anything else, two thirds of us in the 'developed' world are overweight. Whilst studying maths and economics at Cambridge University, Zoe set out to answer the million dollar question - Why do you overeat when all you want is to be slim? This became the title of her first book published in 2004. Following a spell working for major blue chip organisations, Zoe left corporate life in 2008 to make diet and health her full time career. Since then she has set up The Harcombe Diet Club to provide online support for people trying to lose weight and overcome their food addictions. Zoe has a Diploma in Diet and Nutrition and in Clinical Weight Management and is currently researching for her PHD.