Actually, it probably won't, Jude. Just my guess.
On a related note, I read an interesting article in this month's National Geographic about the effects of faith on healing, pain management, etc. That includes the placebo effect, and the social aspects of faith on healing. If I can briefly summarize, it's that the prefrontal cortex associates healing/pain relief with certain social or environmental cues and communicates with other parts of the brain to release our own pain-relieving chemicals. One interesting example they gave was work that is being done with injured veterans. The pain management doctor works with the vets right away and finds something that they associate with positive memories, like peppermint candies (because Grandma gave them to them) or a certain smell (because it reminds them of a very happy memory). Those tangible items are given every time they're also given their pain meds. Eventually, just eating the candy or smelling the smell causes the release of their own, natural pain-relieving chemicals, meaning they're taking less pain meds (or even none). Pretty cool, huh?