Beliefs and preceptions can do things to the mind. Depends on how strongly you believe in things. Your mind will act accordingly.
My parents took a trip to Vegas with two aunts and their hubbies. Both aunts and uncles are church goers and belief in it religiously. They are seriously against gambling but my parents are happy go lucky free minded. My parent didn't encourage non of them to gamble. Towards the end of the night my one of my uncles decided he wanted to try just once, he put in ONE DOLLAR, after a few minutes he is complaining about a headache and says God is punishing him for gambling, LOL. I am sure it's from the cigs and noise from the place or something he ate, logically, but he insisted that it was from the gambling.
LOL, but when people do eatings, most host will make non-ritual food for the guests who are church goers. My mom always remembers because we have aunts & uncles that go to church.