大雪节气：防“寒从脚下起”-家庭护理-君健网

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大雪节气：防“寒从脚下起”

发布时间：2010-12-06 11:14 来源：君健网

12月7日迎来农历二十四节气之一的“大雪”。进入大雪节气后，天气更冷，我国北方地区开始出现大幅度降温降雪的天气。天文专家提醒说，在这段时间，公众要注重日常保健、注意保暖，加强锻炼，减少和避免感冒、咳嗽等呼吸系统疾病的发生。

我国天文教育专家赵之珩介绍，大雪节气在每年的12月7日或8日，此刻太阳黄经为255度。《月令七十二候集解》中说：“大者盛也，至此而雪盛也。”大雪的意思是天气更冷，降雪的可能性比小雪时更大了。

大雪时节已进入隆冬时节，天气更冷，降水偏少、干燥，早晚温差大。此时节，北方呈现银装素裹、万里雪飘的景观，而江南一带在大雪节令以后气温显著下降，常出现冰冻现象，“大雪冬至后，篮装水不漏”就是这个时期生活的气象写照。

天文专家表示，大雪节气前后，东北、西北地区平均气温已达零下10摄氏度以下，黄河流域和华北地区气温也稳定在0摄氏度以下。

值此时节，保健专家提醒说，传统中医学认为，人体的头、胸、脚这三个部位最容易受寒邪侵袭。俗话说“寒从脚下起”，脚离心脏最远，血液供应慢而少，皮下脂肪较薄，抵御寒冷的能力较差，一旦受寒，会反射性地引起呼吸道黏膜毛细血管收缩，使其抵抗疾病能力下降，导致呼吸道感染。因此，在寒冷的大雪时节应特别注意脚部的保暖。

保健专家还提醒说，在气温骤降时如果不注意添衣保暖，可使人患上咳嗽、感冒等症状。因此，在大雪节气这段时间内，公众还要注意根据气候的变化及时增减衣服，患有心脑血管病、关节炎、消化系统疾病的人更要注意及时添衣保暖。

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医生姓名：刘伏友
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