Shocking obesity rates, the rise of eating disorders, killer food allergies, super foods that cure cancer: as the headlines shout every week, we have never been more engaged, or struggled so hard, with what we put in our mouths. Dismissing the fads, award-winning health journalist and nutritionist Dr Sarah Brewer combines the latest science with practical advice on what really matters, from methods of healthy weight loss - and weight gain and maintenance - to how controlling your nutrition can aid many medical conditions.