[Jakefreese]

Eating a banana gives an adult enough potassium iodine to cover the ki pills. All the potassium iodine pills do it fill your thyroid up with good potassium iodine and it blocks the bad iodine 131. Most of the sources that show up from there detectors are from natural sources. beta radiation does not travel far and can be shielded by plastic, glass, wood.... I work at a nuclear power plant and our operations add about 1 milli rem of dose to the surrounding area. General public gets about 250mrem a year from natural sources. Me working at the plant I have gotten about 10mrem for the year. Xrays can widely vary in dose rates, a PET scan can get you about 5000-7000mrem