Should this give us hope?

I receive newsletters from Dr Wahls. For those of you that haven't heard of her, she is a Dr that was diagnosed with MS and through diet has managed to live a normal life again. She still has MS but it doesn't impact her life like is used to. I have put a link below to her facebook page where a lady with PD has described how she has managed to come off her meds due to following the Dr Wahls diet. Just wondered what people thought of this.

My OH (41yrs old)is the PWP and he has started to follow the diet. Seeing things like this does give me hope that maybe one day he can lead an easier/more comfortable life.
Thanks Baker Girl that is interesting.