I should clarify that my statement is my own speculation.
The study didn't directly measure pfas in food. They measure pfas levels in blood plasma and breast milk of pregnant women and self reported diets. So I assume that takeout containers is a substantial contributing factor.
But the article mentions that the researchers also suspect contaminated filters for coffe and contaminated irrigation water for rice. So there might be reason to be concerned about other sources of contamination.
The eggs association is a little more puzzling to me. I want to also blame that on fast food sandwhich wrappers, but that might be too much of a leap.
“In rice, the researchers suspect it stems from contaminated soil or agricultural water. Non-stick cookware also often contains the chemicals, or it could be in water used for cooking.”