Actually, there is even the extreme example of people suffering from DID being allergic to one thing as one persona but not allergic as the other. This phonomenon cannot be properly explained at all, obviously. I think the example in question regarded bee stings and logically thinking one would assume that since both personas are hosted by the same body biological functions would not change.

Your article seems to suggest this influence is a one-way road. There are however also examples of mind –> body changes which support the notion that the mind can also influence the body, giving the mind more status than a mere process run on the brain's hardware. Examples of these are placebo/nocebo effects and the ability of Buddhist monks trained in meditation to change the physiology of the brain while meditating (different brainwave patterns emerged during studies).

For me, the jury is still out concerning the mind/body connection, but Cartesian dualism is an extreme I've scratched off my list.

Anyway, my own concern with the Cartesian dualism is that it makes no sense according to other Biblical teachings and how people actually perceive the world. What I mean here is that god is supposed to be omnipresent, this rather indicates a sort of pantheistic view and thus the idea of a seperation of the physical vs the nonphysical makes no sense since god is where, even in the physical.

Also, a little farfetched to support my argument I also go into explaining that we still think of the soul as being able to communicate with us in the physical world even though the soul itself is nonphysical and has left its physical body. Therefore one would assume communication with the physical body would no longer be possible.

Anyway, I think one could look a lot more into the idea of Cartesian dualism because I think it's obvious there are major holes in Descartes' arguments of the dualistic world.