I was going to use the intro to the NAAFA chapter in Dan Savage's Skipping Towards Gomorrah, but someone else posted an even more extensive list of verses about being obese.  Spoiler: there's more verses about that than there are about homosexuality, rock music or marijuana.  Especially in the Pauline epistles: "their god is their belly," etc.  Not something Protestants can dismiss out-of-hand like with The Seven Deadly Sins or other Roman Catholic doctrinal statements. But the thing about fundamentalists is that they don't actually follow the letter of the text, just the strictest and most batshit crazy interpretation--see also the hatred Wahhabis (strictest and most batshit crazy interpretation) have for Quranists (letter of the text).  So it's not even a sin to harm your body with your dietary choices, but it's totally a sin to have a TV.