Can you explain that in easier words, I’m having trouble understanding the definition

Can you explain that in easier words, I’m having trouble understa…?

http://www.chacha.com/question/can-you-explain-that-in-easier-words%2C-i’m-having-trouble-understanding-the-definition

Huntington’s disease is a disease that causes certain nerve cells in your brain to die causing your body to slowly shut down.