Many different diseases,conditions and injuries can cause chronic pain, from back problems to burns.

VOA: special.2009.02.10

Now let's see where diet comes into play here and how diet affects these different diseases.

现在我们来看看饮食和它们的关系,饮食又是如何影响这些不同疾病的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Multiple sclerosis is different from many other diseases.

VOA: special.2009.01.06

"I'd have to say that equally on both sides of the coin, my successes with regards to my science are the discovery of the genetic basis of a number of different human skin diseases, using very unconventional approaches, which are now approaches in medical textbooks, but at the time, they were very unconventional."

VOA: standard.2010.03.29