Dr Joanna McMillan is a nutritionist-dietitian with a PhD from the University of Sydney; her research looked at the effect of the glycemic index on weight loss. She is now a popular media nutrition spokesperson appearing regularly on TV, radio and in print. Joanna is Director of Dr Joanna, a company specialising in nutrition and healthy living. Having been a fitness instructor for fifteen years, she has helped hundreds of people to change their bodies. For more visit www.drjoanna.com.au