I posted a link to a New Scientist article about the study in question years ago… looks like the study was very likely fraudulent.
As the controversy rages, the Bay Area researcher is en route to a California prison camp on an unrelated fraud conviction. The second scientist recently took his name off the study. The third quietly left Columbia. The government conducted its own investigation and determined the study violated federal research guidelines.
Here’s another study, done by Duke University, which failed to find that praying benefitted other people.