Yes, Potassium is a radioactive element, and this radioactive element is vital to our good health.  It is essential for the body's growth and maintenance.  Potassium is also necessary in order to maintain normal water transport between cells and body fluids.  It also plays an essential part in the response to nerves of stimulation and in the contraction of muscles. Our soil, in which foods are grown, contains many radioactive elements.  Radium and thorium atoms are found in all humans, acquired from the food we eat. Construction materials such as cement, cinder blocks, bricks and granite contain small amounts of radioactive materials that are found naturally in the material used to make them.  They were present when our earth was formed. While natural minerals such as granite may occasionally emit radon gas, the levels are very low.  The EPA believes the principal source of radon in homes is soil gas that is drawn indoors through a natural suction process.  The EPA has no reliable data that concludes that granite used for countertops are significantly increasing our indoor radon levels. The Marble institute of America has announced the conclusion of a four month study on popular granites used for kitchen counter tops.  The study shows conclusively that granite is a safe material for kitchens   To learn more about radon go to www.marble-institute.com for "The Truth about Granite."

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