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Bananas Are Radioactive...
| Good [+1]Toggle ReplyLink» Nuclear a répondu le Sun 25 Sep, 2011 @ 3:35am |
 Coolness: 2603990 | 
Natural radiation is everywhere, including your food. If you live in a stone house, you're getting a higher dose of radiation than you would living in a wooden house. If you're sitting outside, you're being bathed by radioactive cosmic rays. If there's a newspaper on your lap, it's emitting radiation too. Even your body emits radiation into the environment around you, and nothing you can do can stop the constant bombardment short of wearing a lead-lined suit. Recently, the amount of natural radiation in food has caught the public eye. Doctor Oz recently compared the amount of radiation from a chest x-ray to a large dose of bananas on his popular TV show, causing some people to become worried. So why are your bananas radioactive, and does it matter at all? Nearly all foods produce natural radiation, although some to a greater degree than others. Every year a person consumes a total average dose of 40 millirems of radiation from all of their food intake out of an average total of 360 millirems of radiation from all sources. Potatoes, many types of seeds, kidney beans, and a variety of nuts are among the foods emitting the most radiation. Brazil nuts are near the top of the list with 12,000 picocuries per kg Bananas, by comparison, have an average radiation level of only 3520 picocuries per kg, although this is still high enough to place them among the more radiation-heavy foods. The source of the radiation is potassium, specifically radioactive isotope K40 inside potassium. Anything with potassium is radioactive because of this isotope, but few foods have the banana's potassium punch. To put this in perspective with the average dose of 360 millirems of radiation per year, if you ate a banana a day you'd take in 3.6 millirems during that year. By comparison a chest x-ray is about 10 millirems and a six-hour airplane trip will bombard you with 2 millirems. There's absolutely no reason to believe that any amount of bananas, or any other food for that matter, is of any threat due to radiation. Radiation is everywhere, especially in what you put in your mouth. There's no reason to believe any of it is harming you, and you don't have much of a choice. Either you eat radioactive food or you die of starvation. So go ahead, eat a banana and savor the flavor of natural radiation. |
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| Good [+1]Toggle ReplyLink» databoy a répondu le Sun 25 Sep, 2011 @ 4:21am |
 Coolness: 106120 | Fascinating
Radiation is also used in many types of food for all sorts of reasons. Most of the fresh tropical fruit that we buy at the supermarket probably wouldn't have survive the trip without irradiation. [ en.wikipedia.org ] |
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Bananas Are Radioactive...
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