It mostly doesn't compare - sitting in the sun for five minutes doesn't expose you to much in the way of ionizing radiation as almost all of it is filtered out

It mostly doesn't compare - sitting in the sun for five minutes doesn't expose you to much in the way of ionizing radiation as almost all of it is filtered out by the atmosphere. And when you get out of the sun, it stops. Radioactively contaminated food glows at your insides for much longer. Cs-137 biological half-life is weeks: https://en.wikipedia.org/wiki/Caesium-137#Health_risk_of_radioactive_caesium https://en.wikipedia.org/wiki/Caesium-137#Health_risk_of_rad...