Can a Vegan Diet Cause Parkinson's Disease?

The other day a new client came to see me for hypnotherapy.  She has Parkinson's Disease.  She has been a vegan for over 40 years.  As a medical intuitive, I sometimes receive information about a person's medical situation.  She was not seeing me to identify the root cause of her Parkinson's, but in working with her, it came to me spontaneously.  It had something to do with her vegan diet and lacking specific nutrients.  I talked to her about it at the end of the session.  She is a vegan for animal rights reasons and is not willing to incorporate dairy into her diet, even though no animal is killed when milked.  She explained to me how cows cry when their babies are taken from them, which is what happens on dairy farms.  She told me that cows will break out of their farms to walk 100 miles to their calves who have been taken from them.  Hearing this made me want to cry.  I had chills throughout my body when she told me these sad stories of animal mistreatment.  The horrors that animals are put through by humans upsets me very much.  We have to advocate for animal rights.  That is not my calling, but I know it's many others' calling and I fully support whatever changes they can make to improve the livelihoods of animals.

So, we have a dilemma.  I believe humans need to eat animal foods to be healthy AND we need to figure out a way to treat animals with respect, love and honoring.  In the end, we cannot ignore the often dramatic and drastic ways our bodies are calling out to us to feed us differently.

So, I went on the internet to see if there was a correlation between vegan diets and Parkinson's Disease and found this:
http://www.mindbodygreen.com/0-10979/what-i-wish-everyone-knew-about-parkinsons-disease.html

I am not a research scientist, nor do I read through medical journals, so I am not informed on this topic. I am just sharing a little story from my life with one client, not making any conclusive statements.  It's observation.  It's food for thought.