In 2007, researchers at Arizona State University decided to do a systematic review of all the literature on the efficacy of prayer to see what picture emerged.
Very recently the Institute of Medicine of the prestigious U.S. National Academy of Science published areview of the scientific literature and noted that vitamin D may be linked to heart disease, immune function, cancer prevention and diabetes.
There's more: According to a wide-ranging review of the published literature, highly educated people are more likely to have had extramarital sex (those with graduate degrees are 1.75 times more likely to have cheated than those with high school diplomas).