• ONE of the most striking scientific discoveries about religion in recent years is that going to church weekly is good for you. Religious attendance — at least, religiosity — boosts the immune system and decreases blood pressure. It may add as much as two to three years to your life. The reason for this is not entirely clear.

T. M. Luhrmann

Social support is no doubt part of the story. At the evangelical churches I’ve studied as an anthropologist, people really did seem to look out for one another. They showed up with dinner when friends were sick and sat to talk with them when they were unhappy. The help was sometimes surprisingly concrete. Perhaps a third of the church members belonged to small groups that met weekly to talk about the Bible and their lives. One evening, a young woman in a group I joined began to cry. Her dentist had told her that she needed a $1,500 procedure, and she didn’t have the money. To my amazement, our small group — most of them students — simply covered the cost, by anonymous donation. A study conducted in North Carolina found that frequent churchgoers had larger social networks, with more contact with, more affection for, and more kinds of social support from those people than their unchurched counterparts. And we know that social support is directly tied to better health.

Healthy behavior is no doubt another part. Certainly many churchgoers struggle with behaviors they would like to change, but on average, regular church attendees drink less, smoke less, use fewer recreational drugs and are less sexually promiscuous than others.

That tallies with my own observations. At a church I studied in Southern California, the standard conversion story seemed to tell of finding God and never taking methamphetamine again. (One woman told me that while cooking her dose, she set off an explosion in her father’s apartment and blew out his sliding glass doors. She said to me, “I knew that God was trying to tell me I was going the wrong way.”) In my next church, I remember sitting in a house group listening to a woman talk about an addiction she could not break. I assumed that she was talking about her own struggle with methamphetamine. It turned out that she thought she read too many novels.

Yet I think there may be another factor. Any faith demands that you experience the world as more than just what is material and observable. This does not mean that God is imaginary, but that because God is immaterial, those of faith must use their imaginations to represent God. To know God in an evangelical church, you must experience what can only be imagined as real, and you must also experience it as good.

I want to suggest that this is a skill and that it can be learned. We can call it absorption: the capacity to be caught up in your imagination, in a way you enjoy. What I saw in church as an anthropological observer was that people were encouraged to listen to God in their minds, but only to pay attention to mental experiences that were in accord with what they took to be God’s character, which they took to be good. I saw that people were able to learn to experience God in this way, and that those who were able to experience a loving God vividly were healthier — at least, as judged by a standardized psychiatric scale. Increasingly, other studies bear out this observation that the capacity to imagine a loving God vividly leads to better health.

For example, in one study, when God was experienced as remote or not loving, the more someone prayed, the more psychiatric distress she seemed to have; when God was experienced as close and intimate, the more someone prayed, the less ill he was. In another study, at a private Christian college in Southern California, the positive quality of an attachment to God significantly decreased stress and did so more effectively than the quality of the person’s relationships with other people.

Eventually, this may teach us how to harness the “placebo” effect — a terrible word, because it suggests an absence of intervention rather than the presence of a healing mechanism that depends neither on pharmaceuticals nor on surgery. We do not understand the placebo effect, but we know it is real. That is, we have increasingly better evidence that what anthropologists would call “symbolic healing” has real physical effects on the body. At the heart of some of these mysterious effects may be the capacity to trust that what can only be imagined may be real, and be good.

But not everyone benefits from symbolic healing. Earlier this month, the youngest son of the famed pastor Rick Warren took his own life. We know few details, but the loss reminds us that to feel despair when you want to feel God’s love can worsen the sense of alienation. We urgently need more research on the relationship between mental illness and religion, not only so that we understand that relationship more intimately — the ways in which they are linked and different — but to lower the shame for those who are religious and nonetheless need to reach out for other care.

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