@cicerone imposter,
First: Just gave you one example of a simple google search and the first that came out.
Second: Why does Harvard have any more to say than others in this matter? Are they specialists about praying?
As I said, the so called researches suffer from the same. The results really depend from who conduct the researches. Atheist will come to the obvious conclusion that prayers don't get answered and theist will come to the obvious conclusion that they do. Doesn't mean a thing.
If God doesn't exist then we are facing with the cases where people get cured with no logical explanation from doctors, and there are many cases.
If God exists (and I'm talking about the Bible God) then He is a person, and a person is not subject to magical recipies. Prayer is not like an ATM card that if you digit the wright code it will give you the money.
And I'm waiting for you to prove that my reality doesn't exist...