A study of children born in the United Kingdom in the 1990s revealed that those raised in households where margarine was consumed scored three points lower on intelligence tests by age three and a half even when the factors determining wealth and class of parents were considered.
I think that explains a lot. We were margarine eaters. I asked my mom once why we didn't eat butter, whether it was a taste preference or maybe it was easier to cook with. She aid, "Nope. Because it's cheaper."
What about you?