Hi Larry, Welcome to the list. Lack of B-12 cannot cause PD. It can cause pernicious anemia which is another problem that sometimes PD is confused with but not PD itself. While I do not know why your temperature drops I can make several guesses. The first is that PWP have vasomotor instability which can among other things cause sweating and shivering (I think). The other is that medications which block dopamine can at times cause temperature dysregulation. Your PD may act like a dopamine blocker since the dopamine producing cells are depleted some of the depleted cells in your case may be where temperature is regulated in the brain. These are just theories. It certainly is an interesting (and troubling) symptom. Charlie Lawrence Arky wrote: > I was diagnosed with PD last Friday and I am still in denial. I have > been a vegan for the last 4 years and now feel that lifestyle helped > caused my PD because of a lack of B12. My main discomfort comes from > getting cold hands when the weather drops to the 70s and I start to > shiver and shake. and my body temp goes to 95. My thyroid checks out OK. > Dr. has no answer to why it happens. > > Larry Arky -- ****************************************************************************************** Charles T. Meyer, M.D. Middleton (Madison), Wisconsin [log in to unmask] ******************************************************************************************