Hi Jaye, above relates to mitochondrial dysfunction, thought to be operant in PD--There is not much offerred for mitochhondrial dysfunction--coenzyme Q10 is the primary substance that has been studied in PD. If interested in how to affect the mitochondria, and much of this is not proven because mitochondrial cytopathy is a relatively new target for research, there is a now dated article about Mt cytopathy with suggestions for vitamins and supplements to support this structure: Mitochondrial Cytopathy in Adults: What We Know Thus Far
http://www.ccjm.org/content/68/7/625.full.pdf+html
the United Mitochondrial Disease Fnd. Web Site is a good resource also
http://www.umdf.org/site/c.dnJEKLNqFoG/b.3042181/
Many of the vitamins and supplements taken by members of this forum are also suggested for support of the mitochondria....ie Lipoic acid, L-carnitine, B Vitamins.