Neurodegenerative diseases including Alzheimer's disease, Dementia, and Parkinson's disease have affected a large percentage of the population, specifically the elderly. These diseases affect the nervous system by damaging tissue and killing neurons that can not be rebuilt. For example, Parkinson's disease affects a part of the brain called the basal ganglia, which is responsible for smooth movements. Therefore, a person who is affected by Parkinson's disease typically displays symptoms of trembling and shakiness. Although there is no current cure for these diseases, there has been plenty of research done on stem cells and how they could potentially rebuild the nervous system where it has been damaged, as well as other parts of the body. Some
