Its going to happen. Right now China is on the brink of some massive starvation due to their hog epidemic. [1] Pork is their largest meat consumed. When they've slaughtered 90% of their herd, the price of pork will go through the roof across the globe. This will increase the cost of all agricultural goods.

When food becomes expensive for China what will their newly affluent middle-class do? What will the poorer people do?

1. https://news.ycombinator.com/item?id=19823238