Comment by q3k
12 hours ago
Potassium iodide is not going to help you much in the event of a nuclear war.
It's only really useful for nuclear accidents where the primary radioisotope release is I-131. It's not a magical radiation protection shield (for example against Cs-137 or Sr-90 released as a result of nuclear weapons).
Adding to this KI wont keep anything out of the other organs. People not in sealed bunkers will air filtration systems will get acute radiation sickness and eventually cancer either way. Intentionally leaving out the extra morbid details.