rick,
billions of people still subscribe to shamins, folk medicine, prayer, spiritual healers, etc. as we all did before western medicine came to be. if there is proof that any of this helps pd, who's hiding it? and i'm not including herbs from which l-dopa was first derived.
any documented cases oF any spinal cord nerve cell regeneration by the power of thought?
i know the brain can reorganize itself after damage, stroke, gunshot, etc. but pd? alzheimer? not one case in thousands of years?
imho, western medicine was developed because the before mentioned techniques just don't work.

AS far as your wart anecdote, i've had warts disappear on their own..

noone expressing an honest opinion is stopping anyone from doing anything they want. it's called freedom of speech.