Justin Smith is a science writer and health practitioner. For four years, Justin was based at the BBC in West London as a personal trainer. He has also worked with professional and Olympic level athletes. As a science writer, specialities include cholesterol, heart disease, type 2 diabetes, obesity, general fitness and nutrition.  Justin Smith is the author of the book $29 Billion Reasons to Lie About Cholesterol. Justin also has a degree in engineering. He was a competitive cyclist for nine years, and has been trekking in the himalayas on several occasions.