nitrates

Nitrates – widely used preservatives – are found in a variety of foods. Are they good or bad? After all, they can form nitrosamines, recognized carcinogens. A new study uses the metaphor of Dr. Jekyll and Mr. Hyde to separate science truth from science fiction. Here’s what I learned.
The giant supermarket chain is long on marketing but short on science; this is hardly news. However, its officials apparently can't fathom the irony of selling nitrate-free meat in addition to nitrate dietary supplements. But we do.
An alarmist article by NPR wants us to believe that we're in grave danger. That's because some deli meats have labels that are inaccurate, regarding the presence (or absence) of nitrate, a preservative. Here's the science that explains why the whole thing is nothing but a silly scare.