Bølviken B, Flaten T P, Zheng C
Department of Chemistry, Norwegian University of Science and Technology, Dragvoll, Norway.
Med Hypotheses. 1997 Jan;48(1):21-5. doi: 10.1016/s0306-9877(97)90019-0.
Comparison of maps shows a striking geographical relation between high mortality rates from nasopharyngeal cancer in China and low contents of magnesium, calcium and strontium in the soil. We suggest that deficiencies of these elements in the soil could be indirect markers of aetiological factors, e.g. inhalable carcinogens of local natural origin. A search for such factors could be fruitful in further studies of environmental factors in the aetiology of nasopharyngeal carcinoma.
地图对比显示，中国鼻咽癌高死亡率地区与土壤中镁、钙和锶含量低之间存在显著的地理关系。我们认为，土壤中这些元素的缺乏可能是病因学因素的间接标志，例如当地天然来源的可吸入致癌物。在鼻咽癌病因学环境因素的进一步研究中寻找此类因素可能会有成果。
