In this hour-long Food Unwrapped special, the team get stuck into the truth about sugar. In Mexico, Matt looks into agave syrup, which is often touted as being a healthier, more natural alternative to table sugar, but is it? Matt's search for the answer leads to an unlikely encounter with 1980s showbiz legend and agave entrepreneur Cleo Rocos. In Mauritius, Jimmy investigates whether brown sugar is any better for us than white sugar. In a ground-breaking experiment, Kate undergoes a brain scan that will show for the first time exactly what goes on in our heads when we consume artificial sweeteners, compared to what happens when we consume sugar. Kate also meets a chef who makes ready meals for a number of major supermarkets, all of whom are under pressure to reduce sugar content in their meals.