It's not just the cancer risk, if you have a nitrate allergy it can mess your stomach up pretty badly, naturally occurring ones seem to be ok but it's when they're added to preserve the food it's pure poison.
Conflating nitrate with nitrite, an allergy to something that's not an antigen, a substance that's only dangerous when it's not 'natural', a website filled with clickbait.
Based on the number of red flags I'm going to have to dismiss this out of hand, sorry.
Based on the number of red flags I'm going to have to dismiss this out of hand, sorry.