Salt iodization-induced increase in thyroid cancer? Chinese Center for disease control and prevention: there is no direct evidence | | | in the disease control of thyroid cancer _ iodized salt news
Original title: governance solutions | iodization of salt-induced increase in thyroid cancer? Chinese Center for disease control and prevention: there is no direct evidence
Beijing News newsletter (reporter Dandan Li) claims that "thyroid cancer increase associated with salt iodine excess", Chinese Center for disease control and prevention said on May 16, there is no direct evidence that iodized salt and thyroid cancer increases the phenomenon.
Worldwide incidence of thyroid cancer has increased
CDC says that in recent years, on a global scale, whether taking iodine supplementation measures, whether iodine intake is increasing, stable or declining, the incidence of thyroid cancer has increased, mainly dominated by increased cancer of less than 1.0 cm in diameter.
Progress in quite a few small Carcinoma of the thyroid with inert characteristics of low malignancy, the prognosis is good. Patients to follow clinical doctor for proper treatment or observation.
Thyroid cancer prevalence in the population is high, concealed and difficult to be found, may accompany life. According to the autopsy report of some developed countries, lifetime prevalence of thyroid cancer has not been found as high as 5.6%~35.6%, a tiny cancer accounted for 67%.
Studies suggest that current thyroid cancer "epidemic" due in part to the thyroid screening, and arising from the extensive application of high resolution ultrasound of occult carcinoma or cancer overdiagnosis.
CDC says there is no direct evidence that iodine and thyroid cancer increases the phenomenon.
Iodized salt in iodine deficiency in China should be on a diet
It is understood that in 1995, China began implementing the policy of universal salt iodization.
CDC said iodine is an essential micronutrient metabolism and growth and is the main raw material for synthesis of thyroid hormones. Involved in the body's metabolism of thyroid hormones to maintain the normal functioning of all organs, promote the body, especially the brain's growth and development. If a child in the womb and infancy of iodine deficiency, affects the normal development of the brain, and even cretinism, deaf, mental injury caused by serious.
CDC said before the 2000, the Elimination of iodine deficiency disorders, reckons of iodine deficiency disease in children with mild mental retardation (IQ-50-69), endemic cretinism 6.6 per thousand people (Mormonism), seriously affecting the quality of the local population.
Most parts of the country outside the environment (water, soil, and so on) almost all iodine-deficient, especially mountain, Hill, Valley, desertification and rivers area of iodine deficiency is more serious. Environment current situation of iodine deficiency is hard to change, if you stop the iodine, stockpiles of iodine in the human body can sustain a maximum of 2-3 months, so long-term adherence to iodized salt. Since 2000, various monitoring or survey completed, iodine nutrition in General is in the appropriate range.
Responsible editor: Mao Minmin SN184
Article keywords:Iodine thyroid cancer in disease control
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食碘盐致甲状腺癌增加？中国疾病预防控制中心：无直接证据|碘盐|甲状腺癌|中疾控_新闻资讯
原标题：政解|食碘盐致甲状腺癌增加？中国疾病预防控制中心：无直接证据
新京报快讯 （记者李丹丹） 针对有说法称“甲状腺癌增多与食盐碘过量有关”，中国疾病预防控制中心5月16日表示，目前没有直接证据表明食盐加碘与甲状腺癌升高的现象有关。
全球范围内甲状腺癌发病率都在增加
中疾控称，近年来，在全球范围内，无论是否采取补碘措施，无论碘摄入量是增加、稳定或下降，甲状腺癌的发病率都增加，并且主要以直径小于1.0厘米的微小癌增加为主。
相当一部分甲状腺微小癌具有惰性进展特点，恶性度低，预后良好。患者要听从临床医生要求，进行正确治疗或跟踪观察。
甲状腺微小癌在人群中患病率较高，隐匿性大且不易被发现，可能陪伴终身。据一些发达国家的尸检报告，生前未被发现的甲状腺癌患病率高达5.6%~35.6%，其中微小癌占到67%。
有研究提示，当前甲状腺癌的“流行”部分归因于甲状腺筛查，并与高分辨率B超的广泛应用而产生的对隐匿癌或微小癌的过度诊断相关。
中疾控称，目前没有直接证据表明食盐加碘与甲状腺癌升高的现象有关。
我国多地缺碘 应长期食用碘盐
据了解，我国于1995年开始实施全民食盐加碘政策。
中疾控表示，碘是人体新陈代谢和生长发育必不可少的微量营养素，是人体合成甲状腺激素的主要原料。甲状腺激素参与身体新陈代谢，维持所有器官的正常功能，促进人体，尤其是大脑的生长发育。如果孩子在胎儿期和婴幼儿期缺碘，会影响大脑正常发育，严重的造成聋哑、智力损伤甚至克汀病等。
中疾控称，我国2000年消除碘缺乏病以前，碘缺乏病区的儿童中5-15%有轻度智力障碍（智商50-69个点），6.6‰的人患地方性克汀病（呆傻症），严重影响当地人口素质。
而我国大部分地区外环境（水、土壤等）几乎都缺碘，尤其山区、丘陵、河谷地带、荒漠化地区和河流冲刷地区缺碘较为严重。外环境缺碘的现状很难改变，如果停止补碘，人体内储存的碘最多能维持2-3个月，因此要长期坚持食用碘盐。自2000年以来，我国完成的各类监测或调查结果显示，人群碘营养总体处于适宜范围。
责任编辑：茅敏敏 SN184
文章关键词： 碘盐 甲状腺癌 中疾控
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