It would be interesting to find out if B1 injections seem to help some PD patients because they have, for whatever reason, impaired oxygen consumption. And if there is an impaired oxygen consumption is it because their body, again for whatever reason, is not able to used B1 from food or supplements? Was there ever a study done to find out if PD patients do have impaired oxygen consumption?
Intravenous Thiamine Is Associated with Increased Oxygen Consumption
http://www.atsjournals.org/doi/abs/1...C#.VWE4kZTF8rM