Surviving Apart from the Body of Christ

I read an article on Fox News which has the title "Study: Prayer No Guarantee Against Adultery."

This study indicated that attendance of religious services, regardless of religion, was the "only" faith-related activity seemed to ward off infidelity. I say "only" because I don't believe that's the only factor. Who can measure a person's heart and how much that person believes and applies his religion?

The study cites the following as the reason behind service attendance and decreased infidelity:

Attending services perhaps means that an individual is hearing religious teaching on marital fidelity and the general importance of marriage, the researchers suggest. The assumption is they're more likely to practice what's been preached.

However, a few lines above that, you read this:

In fact, those who said religion was very important to them but who didn't get to church often were more likely than others in the study to have had an affair.

Let's discuss these findings in a Christian light. A Christian who claims that his Christian religion is very important but does not get to church much (yes yes, unavoidable circumstances aside) indicates to me a level of hypocrisy in that statement, however large or small (but we're all hypocrites anyways). If one claims himself to be a Christian, he also claims that he is a member of the body of Christ. 1 Corinthians 12 has this to say about being in the body of Christ:

The body is a unit, though it is made up of many parts; and though all its parts are many, they form one body.
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The eye cannot say to the hand, "I don't need you!" And the head cannot say to the feet, "I don't need you!"

A Christian has the potential to be spiritually healthiest when he is partaking in fellowship; it encourages, strengthens, and hopefully spurs him on towards good deeds. Just like your thumb is kept alive and functioning while it is attached to your body, so is the individual Christian. Cut it off, and it might be kept viable for a while, but not indefinitely. So while the purely academic reasoning in the first quote might partially explain it, I believe the spiritual realm is a large factor as well.