Why is it so hard to lose weight and keep it off? Is it because willpower is a scarce resource? Or could there perhaps be a biological component? Hilke Plassmann, Octapharma Chaired Professor of Decision Neuroscience at INSEAD, joins us to discuss how newly discovered connections between the gut and the brain are making scientists rethink the issue of food choice. As researchers like Plassmann discover more about this complicated system, we may be edging closer to developing ways to hack it. And this would give us far more powerful weapons than mere willpower in controlling junk-food cravings and temptations. It may also help societies conquer the spreading obesity epidemic and ease the burdens of its current sufferers.