Andrew Gaule talks to Mehmood Khan, vice-chairman and chief scientific officer, global research and devel-opment, PepsiCo

Give us an introduction to yourself.

I am actually an endocrinologist by training, which surprises many people who know me first as the vice-chairman of a food and beverage company. I completed my medical training and started my career in the UK before coming to the US as a Kellogg Scholar at the University of Minnesota where I served as faculty in the department of food sciences, the college of agriculture and the medical school. I also spent nine years…