Stem Cells and Parkinson’s

I’m currently procrastinating when I should be continuing my research for Biology. It is about Parkinson’s Disease. My grandmother has Parkinson’s and ever since I was born she has had it, only getting worst. She’s come so close to death, yet she is still staying strong; even though it means staying in bed for the rest of her life. I’m actually interested in a lot of this Biology stuff, I think its because it answers a lot of my Why questions, why this is like that, why this happens to these people.