Deuteronomy 8: 3 (Also reference Matthew 4: 4)

So He humbled you, allowed you to hunger, and fed you with manna which you did not know nor did your fathers know, that He might make you know that man shall not live by bread alone, but man lives by every word that proceeds from the mouth of the Lord.

Food may nourish the body, but the word of God sustains the entire being; body, soul, and spirit.  To maintain good health, it is essential to feed the body properly. Similarly, belief and faith fuel a living being as it feeds on God’s eternal precepts.

So let the precepts of your faith sustain you rather than your carnal cravings or yearnings.