Sodium nitrite is a preservative used to cure meat. Even though this substance is the reason we have bacon and ham, there are several claims that sodium nitrite causes cancer.
There’s no doubt that this could be true. However, the cancer can only form when massive amounts of sodium nitrite are consumed.
Not just five strips of bacon, pounds of it.
Overall, sodium nitrite is a safe food additive. Some research even claims that there are health benefits, which include but are not limited to treatment for sickle cell disease and leg vascular problems.