Sugar is the new enemy-number-one for the health conscious these days, but at least it takes the heat off carbs for a bit. In this Food Unwrapped special, Matt Tebbutt visits Mexico to assess whether agave syrup is a healthier, more natural alternative to table sugar and Jimmy Doherty heads to Mauritius to gauge whether brown sugar is any better for us than white sugar. Kate Quilton 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. Plus, a new presenter joins the team, as fearless chef and global food explorer Kiran Jethwa investigates the cutting-edge science which suggests that human bodies can feel all the benefits of sugar without any of the calories, simply by swilling the sugar and spitting it out.