人体疾病之产生与这些客观因素是分不开的.汉代文献有很多记载,两汉之季,气候十分异常,就气候变化的趋势来看,从战国到两汉是降温的走向,是我国历史上较罕见的恶劣气候时期.现代医学经验已经证实,气候的变迁(包括季节性气候变化)也是导致疾疫频发的重要原因,这就解释了汉代的天灾为何多与疫病相伴而发的原因.%Generation of human disease is inseparable with the objective factors. It is well documented that the climate is very unusual in Han Dynasties. The changing trend of climate from Warring States Period to the Han Dynasty is a cooling trend. It is said that Han Dynasty is the rare bad time weather in ancient history. It is confirmed that by the experience of modern medicine, climate change ( including seasonal climate change) is the important reason, which explains the reason of the frequent happening of the diseases and natural disasters always accompanied with diseases in Han Dynasty, in Han dynasty
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