“Now, observant Jews and Muslims have strict laws governing their diets, but Christians generally do not. Yet here we were, discovering a hidden connection between fidelity to our religion’s demands and the kind of food we ate. As we came to see in time, the separation between our political and moral convictions and the lifestyle choices we made was by and large an illusion. Just as ideas have consequences, so do actions.”
Rod Dreher Crunchy Cons (on discovering that a healthier diet made Catholic family planning work better by making his wife's cycle more normal)