Among the lofty mountains of Karakoram ranges in Northern Pakistan, lies the Hunza Valley, home of a community of disease and cancer free people said to survive longer with life expectancy of around 100 years, whereas the average life expectancy in Pakistan is 67 years. Indoor radon measurements were carried out in the five villages of Hunza-Valley. The average Radon concentration levels were found to be 52.97 ± 25.25, 43.49 ± 16.04, 34.15 ± 17.93, 30.38 ± 10.82 and 30.80 ± 19.48 Bqm⁻³ respectively in Hassianabad, Altit, Murtazabad, Karimabad and Aliabad. The annual effective dose was calculated as 0.68 ± 0.32, 0.5 ± 0.20, 0.44 ± 0.23, 0.4 ± 0.14 and 0.25 ± 0.06 mSvy⁻¹ in the above mentioned five villages. The radon concentration levels, are much below the action level recommended by the ICRP (300 Bqm⁻³), USEPA (150 Bqm⁻³), and WHO (300 Bqm⁻³). Radiation hormesis that the low doses of ionizing radiation are beneficial, stimulating the activation of repair mechanisms that protect against diseases, is the possible reason for their long life and absence of diseases and cancer from the region.

中文翻译：

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巴基斯坦北部喀喇昆仑山脉罕萨河谷室内Rad浓度的测量

巴基斯坦北部喀喇昆仑山脉的崇山峻岭之中是罕萨河谷，这里是一个无疾病和无癌症人群的家园，据说可以生存更长的时间，预期寿命约为100年，而巴基斯坦的平均预期寿命为67岁。在Hunza-Valley的五个村庄进行了室内ra测量。在Hassianabad，Altit，Murtazabad，Karimabad和Aliabad，平均Rad浓度水平分别为52.97± 25.25、43.49 ± 16.04、34.15 ± 17.93、30.38 ±10.82和30.80±19.48 Bqm ^-3。年有效剂量经计算为0.68±0.32、0.5±0.20、0.44±0.23、0.4±0.14和0.25±0.06 mSvy ^-1在上述五个村庄中。浓度水平远低于ICRP（300 Bqm ^-3），USEPA（150 Bqm ^-3）和WHO（300 Bqm ^-3）推荐的作用水平。低剂量的电离辐射有益于辐射兴奋，刺激了预防疾病的修复机制的激活，这可能是其寿命长，该地区没有疾病和癌症的可能原因。