Radiation phenomena on Earth earlier than the birth of mankind, that mankind is in radioactive environment phenomena multiply dozens of years. Almost all substances containing radioactive elements on earth, including our humanity itself. From natural stone, containing radioactive substances is yes, normal.
Stone radioactivity level with other building materials radioactivity levels roughly equal
Build our survival, residential, office space, almost all building materials, raw materials for producing building materials taken from nature, radioactivity level of the stone is a low-dose radiation ore, can not and will never be fast (short-term) lead to deterministic effects ʱ?? That is because some newspapers reported the laying of "cuckoo green" granite XXX caused infertility, or because stone radioactive lead to the occurrence of various types of cancer. This argument is based on a lack of theory and practice.
To what extent stone radioactive effects on human health
Low doses of radiation, professionals have different views, both sides lack the necessary clinical data stream sick science survey. But one thing is health hazard deterministic effects, and for building materials, stone production of low-dose radiation, cancer may occur, the probability of occurrence of cancer increases with increasing dose, usually a few hundred thousandths. This risk is not than by car, train ride high risk, construction, mining street inheritance. Stone standard classification is not harmful or harmless dividing line, it needs to be done and the cost benefit analysis, that a particular practice when human benefits greater than the price paid, then such practice is justified.
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