Hi Brian, As I understand it your argument against the use of eldepryl is: 1. PD occures because in the first place, a single, catostrophic, event reduces the number of dopamine producing cells. Subsequntly natural attrition further reduces the remaining cells to less than 20% of the original number of cells. At this point PD symptoms manifest themselves. (If you can have plethora I can have manifest). 2. Eldepryl is used to 'protect' the cells against the onslaught of the once-in-a lifetime event, which has already occurred prior to the onset of PD. 3. There is no point protecting oneself against some- thing which has already happened. So why take Eldepryl. Your reasoning is sound but I query some of your premises: 1. You assume the 'single catastrophic event' causes the loss of a large number of cells at the time of the event. Even if the single event hypothesis proves true (and like yourself I am drawn to it), it is still far from certain whether it does its damage at the time or is the trigger which accelerates the normal process of apoptosis. Either way the progressive nature of PD is the result of the continued apoptosis of dopamine producing cells and it is this continuing action that Eldepryl addresses (see next point). 2. Your argument appears to assume that the action of Eldpryl is to protect the cells and prevent the first 'one off' lose. My understanding however is that Eldepryl slows the progression of the disease, reducing the rate of apoptosis. Qu. Why do I take eldpryl? Answer: Because there is an informed body of opinion which believes that it significantly reduces the rate at which PD advances. Having only 10-20% of our original cell allocation when we are diagnosed makes it imperative to reduce the rate at which they are dying. This is true if the rate is normal, and even more so if the rate is accelerated. Dennis. ++++++++++++++++++++ Dennis Greene 47/10 [log in to unmask] http://members.networx.net.au/~dennisg/ ++++++++++++++++++++