On: Eating microwave popcorn increases the level of PF...

[wumms]

Me too - though the LD50s (rat, oral) of both are quite close:

NaCl: 3.000 mg·kg−1 [0]

Na4[Fe(CN)6]: 1600–3200 mg·kg−1 [1]

[0] https://en.wikipedia.org/wiki/Sodium_chloride

[1] (german, as the english version has no LD50) https://de.wikipedia.org/wiki/Natriumhexacyanidoferrat(II)