Flexi Says: Although exposure to high levels of radiation is dangerous, we are continually exposed to harmless background levels of radiation. You might be surprised to learn that natural materials such as rock and plants give off some gamma radiation. Avocados, for example, give off 0.16 microgray per hour (μGy/hr) of gamma radiation and bananas emit 0.17 μGy/hr. It is not possible to eat a large enough amount of avocados or bananas to get radiation poisoning. You would have to eat over 700 avocados every day for a whole year to get the amount of radiation associated with fatal cancers.
