I'd be curious to know which chemicals have been proven to cause Parkinson's Disease. Â Can you provide your source of information?
There's a  multitude of info on it.  The University of Stanford is credited for having done the first research in the association of chemicals with Parkinson's Disease.
For the most part, Â their original research was focused predominately on insecticides. Â Now, it is old news.
But, here's a couple of more recent experts comments.
"Men are more than twice as likely to have PD when exposed to chemicals". Â Dr Walter Rocca, Mayo Clinic.
(Hmm, it seems women have a more stable production of dopamine, them thar brain neurons! Â LOL)
Dr. Zalman S. Angus MD, Professor @ U of Penn School Of Medicine contributes to MEDPAGE..."several studies have reported association of PD with pesticides...metals, solvents, paints, glues, and printing chemicals. Â (Then there were some studies that came to no conclusion as to the relationship of chemicals,

other than pesticides with PD).
I could go on, but you get the point. Â I don't know that any chemicals used in a hot tub are harmful. Â I'm not saying they are.
My philosophy is natural is better. Â That's why if there is a natural product out there that will do the trick, I'd prefer to use it. Â So, if anyone knows of a natural solution to keeping the hot tub clean and bacteria free, I'm all ears. Â
