Er in fact most of the radiation we get in fact is not from nuclear power, it's from erm  man made sourc it's from, from natural sources  eighty seven percent of the population as an average comes from our natural environment  a lot comes from radon gas erm  a small amount of radioactivity in our food  erm we were discussing at er er lunch in, in fact the  benefits of, of eating er low sodium salt  salt is meant to be bad for you so the health er er  er freaks say  and it's the sodium, therefore you should buy low sodium salt which is calcium chloride rather than sodium chloride  what they forget to tell you of course is that potassium er sorry it's, it's potassium chloride rather than er than s than sodium chloride, what they forget, forget to tell you of course is that potassium is slightly radioactive  it contains erm a small amount of, of a naturally occurring radioactive  potassium   so you get a small dose of radiation er to compensate for the fact you aren't eating any sodium.