----- 电离和非电离辐射对健康的影响
Every day, we are exposed to natural radiation such as radon and ultraviolet light, and sometimes also to the radiation burden from medical investigations. Moreover, our lifestyle subjects us to increasing amounts of ‘modern’ radiation caused by VDUs and mobile phones, which add to our overall load. High levels of radiation are known to cause often profound changes in cell chemistry with inevitable clinical effect. At a certain level, a clear dose response may be observed. However, effects caused by low-level radiation are difficult to demonstrate, particularly when the sources are different and numerous. But this does not mean that there is no effect. Considerable research is being conducted into the effect of low level radiation on the body and first results are presented in this issue. Dealing with all forms of radiation on the body, this issue is of great interest for medical or health practitioners as well as for designers and producers of consumer equipment which generates electromagnetic radiation.
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