The key problem is that, for the first time in history, we've basically solved the food problem. To the point where obesity is epidemic worldwide. But our genes

The key problem is that, for the first time in history, we've basically solved the food problem. To the point where obesity is epidemic worldwide. But our genes don't know this, so they pack on the lard in preparation for lean times that never come. So the trouble is that to not get unhealthily fat, we have to eat in a completely unnatural way. And it's really hard.