That's such a good question, and I don't have the numbers at my fingertips. I do want to say that there have been some studies looking at how much money, for example, the diet industry is making in terms of benefiting from marketing weight-loss products, different types of diets, exercise machines, etc. This is a multi-million dollar industry in North America, and clearly somebody is paying for that.
That's just one type of economic cost. I don't have other details at my fingertips, but I think it's a great question, and it's something we need to think more about.