In tonight’s episode we answer the 36 billion dollar question, is fat mainly to blame for making more than 60% of Australians overweight or obese? In an earlier episode we discovered that sugar in our diet isn’t the major culprit for the country’s obesity problem, so what role does fat play? And what’s the difference between saturated, polyunsaturated and trans fats? Which are the good ones and which are to be avoided? Joe Avati has the facts on fat.