I find this research rather silly, but possibly true:
According to a new study by Northwestern University's School of Medicine, young adults who attend religious activities once a week or more are 50 percent more likely to become obese by middle age than their non-church-going peers.
Previous studies had established a correlation between religious involvement and obesity, but this is the first time that researchers have established religious involvement as a contributing cause of weight gain. By tracking participants' weight over time and adjusting for differences in age, race, sex, education, income, and baseline body mass index, the Northwestern team was able to show that "normal weight younger adults with high religious involvement became obese, rather than obese adults becoming more religious."
So let's get this straight (ahem): as you grow older, you can show how religious you are if you go through ten pants sizes, but if you're getting fat when you're middle-aged, the size of your pants doesn't mean squat and you're probably going to hell.