The poster might be referring to some of the additives used in the making of American bread: https://www.theguardian.com/us-news/2019/may/28/bread-additi...
Now a comparison of US vs. EU cases of early onset colorectal cancer would be required.
Now a comparison of US vs. EU cases of early onset colorectal cancer would be required.
https://www.wcrf.org/cancer-trends/colorectal-cancer-statist...
Doesn't seem to help Norway, Portugal, Japan, Croatia, or Denmark.
Too much oil, not enough grain?
For bad diagnosis and treatment, Barbados, Samoa and Singapore seem to be outliers.
"Potassium bromate, a potent oxidizer that helps bread rise, has been linked to kidney and thyroid cancers in rodents."
if something is "linked to ... cancers in rodents", that tells us basically nothing about its safety in the industrial process and consumption by humans.
...but far from all US bread. You tend to find the more questionable additives in the cheapest store-bought breads. But it's also not hard to find higher-quality bread that omits them.