They trust in God to fill the gap between what they could normally endure and what is actually required of them. Using both anecdotal and research data, he demonstrates that there is ample evidence to show that people who regularly attend church, pray, read, and put into practice what the Bible or their faith teaches are overall healthier. Just for starters, they have significantly lower blood pressure, are hospitalized less, recover from surgery faster, have stronger immune systems, and are likely to live longer. In other words, churchgoers seem to have stronger immune systems. And it doesn't seem to matter what type of religious faith one practices.
Any religious involvement is beneficial to some degree.
Conservative Protestants have lower cancer risks than liberal Protestants, and Jewish people have the highest cancer death rates. The research does raise some questions. Koenig insists that research can neither prove nor disprove the reality of answered prayers or divine intercession. Just as well, because it is bad theology to see God as a dependent variable in an experiment. Furthermore, the Christian life, lived as Christ would desire, is neither easy nor necessarily conducive to longevity.