Iscuss why stem cell is the best method for future treatment of Alzheimers and Parkinson disease

Do not discuss on the the causes and symptoms,treatment and management of both diseases.

Emphasise on the future treatment options like cell therapy, deep brain stimulation and stem cell.

Justify why stem cell treatment is better than the other methods and why it is the ideal method for the future treatment of the disease.

Please make sure the work is not copied from any database and the work is plagiarism free.
Use the havard style of referencing and use a minimun of 12 reference sources.