Everyone are smart. It depends of the practice each person has for his own. Religion it's just a a help to be a better person, but still it depends on the person. I don't that one religion is ''smarter'' than an other, I think people are all equal to make the sames mistakes and equal to do things right.
Religion in General is irrelevant to human health. Moreover it prevents and actually harmful to health. How many people were hoping for a prayer and as a result launched the disease and lost his life.