【英语时差8,16】饥饿的“模样”（下）（在线收听）

That’s because the belly on a starving person has nothing to do with fat. Rather, it is often the result of Protein Calorie Malnutrition, or PCM. PCM means a healthy number of calories are being eaten — say in the form of rice — but with a severe deficiency in protein. This is often the case in third-world countries where meat and fish are rare or too expensive for many. Even in a healthy state, the blood vessels and organs leak fluids a little. This is generally no problem, as the lymphatic system removes the excess, and a little fluid cushioning the organs is a good thing. In PCM, however, the lymphatic system can’t keep up with the leakage, and the stomach area begins to bloat with its own waste fluids. Add to this the likelihood of a swollen liver, which is another result of PCM, and you wind up with the terrible irony of a person on the verge of starvation looking weirdly similar to an overeater.