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大中小学校食堂供餐何毒素致当代大学生精子数质量恶化

2016-04-20 预防犯罪研究中心

钟南山院士说:由于近年来食品问题越来越突出,男性的精子浓度已经出现了很大的变化,以前男性的精子浓度是1亿到五千万算是正常,现在3千万都算正常了。现在男性的精子浓度比40年前下降了将近一半。80年代初制定的国际标准中,合格的精子密度应为4000万个/毫升,而今天以2000万个/毫升来筛查竟有50%的人无法通过。广西地区大学生精液质量异常的情况以精子活率及活力低比较突出,56.7%男生精液异常其精子的活率明显低于国内不同地区文献报道的结果!南昌地区在校大学生精液参数不合格率为20.5%!武汉、长春地区大学生:发现精子浓度逐年明显降低!2007年,浙江省大专以上在校大学生精子质量不合格率占38.3 %!上海志愿捐精者的合格率不超过21%,河南精子库的捐献合格率在22%左右,北京精子库成为合格供精志愿者的只有15%左右。卫生部中日友好医院男科主任医师曹兴午教授说,“如果再这样下去,50年后人类就要断子绝孙了!”

Academician Zhong Nan-shan said: Due to more and more prominent food problems in recent years, dramatic changes have occurred to sperm concentration, before sperm concentration of 100 to 150 million is considered normal, at present even 30 million is regarded as normal.Compared with 40 years ago, sperm concentration has declined almost 50%. The international standard set in the 80s, qualified sperm concentration should be 40 million/ml, at present, screening by 20 million/ml, even 50% could not pass. Guangxi region university students sperm quality abnormal situation, especially low rate of survival sperms and low activity rather apparent, the abnormal sperm and activity rate of 56.7% students were significantly lower than situation in other regions of China as reported by references. Nanchang area 1000 at-school university student semen donors: The semen parameters of 20.5% does not reach qualification standards! Semen quality assessment of 1808 university students during 2010 - 2013 in Wuhan: Found sperm concentration apparently declined during these four years observation. Changchun: Sperm concentration and sperm morphology both showed declining trend! In 2007, 720 cases of at-school university student semen donors in Zhejiang province: 276 cases (38.3%) do not reach WHO standards. Qualified rate of semen from Shanghai donors do not exceed 21%, from Henan is about 22%. Beijing sperm bank: eventually one 15% donors could be evaluated as qualified donors. ""If the situation continues like this, 50 years later mankind will have no further offspring!" Prof. Cao Xing-wu, director doctor, Andrology Dept., Sino-Japanese Friendship Hospital warns.

钟南山院士说:由于近年来食品问题越来越突出,男性的精子浓度已经出现了很大的变化,以前男性的精子浓度是1亿到五千万算是正常,现在3千万都算正常了。现在男性的精子浓度比40年前下降了将近一半。

Academician Zhong Nan-shan said: Due to more and more prominent food problems in recent years, dramatic changes have occurred to sperm concentration, before sperm concentration of 100 to 150 million is considered normal, at present even 30 million is regarded as normal. Compared with 40 years ago, sperm concentration has declined almost 50%.

中国新闻网,钟南山:食品安全问题已成破坏男女生育能力的祸首

20040326

China News network, Zhong Nan-shan: Food safety problem has become culprit destroying male and female reproduction ability, 2004-03-26

http://www.chinanews.com/n/2004-03-26/26/418262.html

80年代初制定的国际标准中,合格的精子密度应为4000万个/毫升,而今天以2000万个/毫升来筛查竟有50%的人无法通过。

The international standard set in the 80s, qualified sperm concentration should be 40 million/ml, at present, screening by 20 million/ml, even 50% could not pass.

江苏省的精子库(卫生部批准的第一批精子库)及上海等地的精子库在接受捐赠者时是又感激又担忧,... 特别是在校的大学生们生殖理念已现代化了是值得称赞的,但是体检的结果是精液质量不合格,这就令人担忧了。80年代初制定的国际标准中,合格的精子密度应为4000万个/毫升,而今天以2000万个/毫升来筛查竟有50%的人无法通过。

The Jiangsu sperm bank (among the first approved by the Ministry of Health) and sperm banks in Shanghai and other cities, when they accepted donors they were grateful and concerned: They were grateful to the modernized reproduction concepts of university student donors who were still studying at school, but most concerned to their sperm quality unqualified situation. The international standard set in the 80s, qualified sperm concentration should be 40 million/ml, at present, screening by 20 million/ml, even 50% could not pass.

眭元庚,“精子危机”并非危言耸听,江苏省性学会第六次学术会议论文集,2006

Gui Yuan-geng, "Sperm Crisis" is not alarmist,

Jiangsu province sexual society 6th academic symposium proceedings, 2006

http://cpfd.cnki.com.cn/Article/CPFDTOTAL-JSXI200606001003.htm

江苏省人民医院

Jiangsu Provincial People's Hospital

广西地区大学生精液质量异常的情况以精子活率及活力低比较突出,56.7%男生精液异常其精子的活率明显低于国内不同地区文献报道的结果!

Guangxi region university students sperm quality abnormal situation, especially low rate of survival sperms and low activity rather apparent, the abnormal sperm and activity rate of 56.7% students were significantly lower than situation in other regions of China as reported by references.

李广裕,217例广西在校大学生志愿者精液质量分析

广西医科大学, 内分泌专业硕士论文(导师:梁季鸿)2009

http://d.wanfangdata.com.cn/Thesis/Y1463044

我们对广西19所高校的217例大学生志愿者的精液进行了质量分析,竟有56.7%的大学男生精液质量异常,这个结果连我都吓了一跳。昨日,广西医科大学第一附属医院男性学科主任梁季鸿博士告诉记者,精液质量是男性生殖健康的睛雨表56.7%男生精液异常,这是相当惊人的数据。

"We analyzed quality of semen collected from 217 volunteers from 19 universities in the Guangxi region, and were shocked to find that the semen quality of 56.7% university male students were abnormal." Yesterday, Liang Ji-hong, PhD, Director, Andrology Dept./ of the 1st attached hospital to Guangxi Medical University, told the media, semen quality is the "barometer"of male reproductive health, 56.7% abnormal is a rather shocking data.

这一数据来自《广西在校大学生性健康调查报告》,该报告源自广西医科大学第一附属医院男性学科参加世界银行卫生九项目中的一个子课题。这应该是广西首份针对在校大学生性健康的权威调查。梁季鸿表示,这份报告,除对217例广西在校大学生志愿者精液质量进行了分析,还对19所高校在校大学生进行了性健康问卷,对广西1640名在校男大学生外生殖器进行了查体结果分析,较全面反映了广西在校大学生的性健康状况。

This data comes from "Guangxi at school university sexual health investigation report", this report is a sub-project of the nine health projects of the World Bank participated by the Andrology Dept. of the 1st Hospital attached to the Guangxi Medical University. "This should be regarded as the first authoritative investigation on sexual health of the the at-school university students in the Guangxi region." Liang Jia-hong indicated, this report, besides analysis of 217 semen samples collected from at-school university students, also carried out sexual health questionnaire interviews with at-school university students at 19 universities, and analyzed genitals examination results of 1640 male at-school university students, thus rather comprehensively reflects the sexual health condition of college students in Guangxi.

广西新闻网,调查报告称广西在校大学生过半精液异常,20091119

Guangxi News network, Investigation report claims that over half of semen of at-school university students is abnormal, 2009-11-19

http://news.sina.com.cn/h/2009-11-19/070819080334.shtml

南昌地区在校大学生供精志愿者1000名: 精液参数未达到标准不合格率为20.5%!

Nanchang area 1000 at-school university student semen donors: The semen parameters of 20.5% does not reach qualification standards!

南昌地区在校大学生供精志愿者1000名按《世界卫生组织人类精液检查与处理实验室手册》(第5版)进行精液常规检测,获得相关的精液参数常规指标:精液参数未达到标准的有205例,不合格率为20.5%。

Semen routine tests were carried on semen samples of 1000 at-school university student semen donors in Nanchang area according to the "WHO human semen examination laboratory manual" (5th edition) and semen parameters were obtained: the semen parameters of 205 cases (20.5%) did not reach the standard.

陈伊et al.,南昌地区1000例在校大学生精液质量分析,现代诊断与治疗,2014(8)

Chen Yin et al., Semen quality analysis of 1000 at-school university students in Nanchang area, Modern Diagnosis & Treatment, 2014(8)

http://www.cnki.com.cn/Article/CJFDTotal-XDZD201408149.htm

武汉2010—2013年期间1808名大学生精液质量评估:发现精子浓度在这四年的观察中明显降低

Semen quality assessment of 1808 university students during 2010 - 2013 in Wuhan: Found sperm concentration apparently declined during these four years observation

武汉是全球大学生人数最多的城市,本研究对武汉在校大学生的精液质量进行了评估。研究对象为湖北省人类精子库20102013年招募的大学生捐精志愿者,对1808名大学生的3616份精液参数进行了回顾性分析。发现精子浓度在这四年的观察中明显降低,这虽然不是精液质量降低的有力证据,但是武汉大学生不容乐观的精液质量应该引起高度重视,并且应该进一步对这种严峻的现状进行深入研究。

Wuhan is the city with largest number of university students in the world. This study assessed the semen quality of at-school university students in Wuhan. The object of the study was the university student semen donors recruited by the Hubei province human sperm bank during 2010 - 2013. A retrospective analysis was carried on the 3616 semen samples donoted by 1808 university students. Found sperm concentration apparently declined during these four year observation. Although this is not strong evidence of semen quality declination, but the unoptimistic semen quality of university students in Wuhan requires high attention, in-depth study should be carried on this grim situation.

Meng Rao Tian et al., 来自中国中部城市武汉的1808名大学生精液质量评估,Asian Journal of Andrology2015(1),111-116

Meng Rao Tian et al., Semen quality assessment of 1808 university students in Wuhan, a city in the middle of China, Asian Journal of Andrology2015(1),111-116

http://www.cqvip.com/QK/84127X/201501/664200176.html

2014年,对长春市487名在校大学生供精志愿者精液样本进行检测和分析:精子浓度及精子形态两方面存在下降趋势!

In 2014, examination and analysis of semen samples from 487 at-school university student semen donors in Changchun: Sperm concentration and sperm morphology both showed declining trend!

对长春市487名在校大学生供精志愿者精液样本进行检测和分析。长春地区大学生精液质量总体状况尚可,但精子浓度及精子形态两方面存在下降趋势,大学生生殖健康状况值得进一步关注。

In 2014, examination and analysis was carried out on semen samples from 487 at-school university student semen donors in Changchun. The overall semen quality of Changchun universities seem acceptable, but indicated declining trend in sperm concentration and sperm morphology, university student reproduction health situation requires further attention.

徐胜旗et al.,长春地区487例大学生生殖健康状况分析,中国妇幼保健,2014(22)

Xu Sheng-qi et al., Reproduction health condition analysis of 487 university students in Changchun area, China's Woman & Children Healthcare, 2014(22)

http://www.cnki.com.cn/Article/CJFDTotal-ZFYB201422031.htm

吉林大学第一医院男科

Andrology Dept., 1st Hospital, Jilin University

2007年,浙江省720例大专以上的在校大学生供精志愿者: 276 例未达到WHO标准,占38.3 %

In 2007, 720 cases of at-school university student semen donors in Zhejiang province: 276 cases (38.3%) do not reach WHO standards.

富炜et al.720例大学生供精志愿者精液参数分析,当代医学,2007(8)

Fu Wei et al., Semen parameter analysis of samples from 720 university student donors, Modern Medicine, 2007(8)

http://www.cmed.org.cn/html/27/n-27.html

浙江省计划生育科学技术研究所

Zhejiang Province Birth Planning Science & Technology Research Institute

上海志愿捐精者的合格率不超过21%,河南精子库的捐献合格率在22%左右,北京精子库成为合格供精志愿者的只有15%左右”。卫生部中日友好医院男科主任医师曹兴午教授警告:“如果再这样下去,50年后人类就要断子绝孙了!”

Qualified rate of semen from Shanghai donors do not exceed 21%, from Henan is about 22%. Beijing sperm bank: eventually one 15% donors could be evaluated as qualified donors. " "If the situation continues like this, 50 years later mankind will have no further offspring!" Prof. Cao Xing-wu, director doctor, Andrology Dept., Sino-Japanese Friendship Hospital warns.

如果再这样下去,50年后人类就要断子绝孙了!卫生部中日友好医院男科主任医师、从事了15年精子质量研究的曹兴午教授在接受记者采访时忧心地说。

"If the situation continues like this, 50 years later mankind will have no further offspring! Prof. Cao Xing-wu, director doctor, Andrology Dept., Sino-Japanese Friendship Hospital of the Ministry of Health, who studied sperm quality for 15 years, to the reporter with anxiety during an interview.

曹教授之所以这样说,是因为近来,国内精子库精源短缺的消息频频见诸报端,原因之一就是捐精者的精子质量不合格。有报道称,上海志愿捐精者的合格率不超过21%,河南精子库的捐献合格率在22%左右,而北京精子库的统计数字则显示,初步筛选能够提取样本的人数不到一半,最后能成为合格供精志愿者的只有15%左右。现在男性精子质量下降非常严重,可是人们对此却毫不重视。

The reason Prof. Cao said so, was because, news that Chinese sperm banks are facing shortage supply has been frequently reported by the media, one of the reasons causing the shortage is the sperm quality of semen donors is not qualified. Reports claim that the qualified rate of semens from Shanghai donors do not exceed 21%, from Henan is about 22%. Statistics from the Beijing sperm bank indicate, after preliminary screening semen samples can be collected from less than half the donors, and eventually one 15% donors could be evaluated as qualified donors. "Sperm quality is seriously declining at present, but people do not pay any attention."

人类精子库本来就是不育患者的最后一线希望,如今它也出现了问题,难道人类真会因此而消亡?

Human sperm bank is the last hope to infertility patients, today they are also occurring problems, will mankind really die out due to this?

人民网,研究称:中国男性的精液质量以每年1%的速度下降,2008-8-1

People network, Studies claim: Chinese sperm quality

is declining at a rate of 1% each year, 2008-08-1

http://news.sciencenet.cn/htmlnews/2008/8/209686.html

附录:《扬韬:转基因大豆与精子异常》

http://yangtao19681968.blog.163.com/blog/static/14040248720102795454637/

2010-02-20

学者的研究发现,广西大学生的精子质量不合格率超过56.7%,有人就此指出与广西种植的转基因作物有关。其实,从严格意义来说,广西的大学生的精子质量并没有特别之处,因为从全国范围看,它的所谓异常,其实很正常。因为中国年轻男性的精子质量下降已经成为一个大趋势,而这个大趋势与全球同步。

为此,扬韬通过网络搜索,发现了如下一些文献。

1、《生殖与避孕》1999年第一期,国家计生委科研所人员文章《19811996年我国有生育力男性精液质量的变化分析》。通过文献检索,收集1981199616年间我国成年有生育力男性精液质量检测报告文献114篇,涉及39个市、县的9292人、11726人次样本测定,共256份数据。分析结果显示:

精子计数由10302×106ml1983)降至8384×106ml1996),

精子活动率由7511%(1982)降至6727%(1996).

正常形态精子率由8502%(1983)降至7789%(1996),

排精总数由35534×106/次(1984)降至26226×106/次(1996),

精液量由331ml1981)降至297ml

22003年第4期《中国卫生统计》刊登复旦大学上海医学院等单位研究报告,对在我国七省市妇幼保健所进行婚前体检的 5 62例正常男性志愿者进行精液质量测定和流行病问卷调查。结果如下:

男性精液量为 2 61± 1 10ml

精子密度为 64 47± 3 4 5 9± 10 6/ml

精子前向运动百分率 5 9 89±17 11%

精子存活率 77 19± 11 87%

精子正常形态率 78 2 3± 9 15 %

3、《中华医学会第五届全国计划生育学术会议资料汇编2004年版,刊登成都市计划生育技术指导所李刚等人文章《成都地区549名大学生镜子质量及血清抗清子抗体的调查》显示:

学生精子密度(×10~6/ml)50.90±27.31

A+B级精子(%)42.21±15.38

A级精子(%)29.48±13.71

及精子活率(%)56.40±14.77,

其中精子质量正常345(62.84%)、异常204(37.16%)

在精子质量异常的204人中,187人精子活力异常(91.67%),39人精子密度异常(19.12%),22人精子密度和精子活力异常(10.78%),未发现无精子者。正

正常组精子的密度和活率均低于全国(1987)、北京(1988)、成都(1988)、南京(1989)、郑州(1990)报道的结果。

结论成都地区大学生精子质量异常的情况比较突出,其精子密度和精子活率与国内报道的结果相比呈下降趋势,同时也不可忽视免疫因素对该人群生育能力的影响。

4、新华社200749电,正在参加我国首届中华医学会生殖医学协会·中国动物学会生殖生物学分会联合年会的王一飞教授和黄荷凤教授说,虽然我国还没有对不孕不育的总体情况进行大规模的流行病学调查,但部分区域的调查数据显示,已婚人群中不孕不育的比例达到了7%~10%,不孕不育的现象呈增长趋势。据悉,近年来,全国不少地方的生殖医学专家做了一些调查和研发现,与三四十年前相比,男性每毫升精液所含精子数量从1亿个左右已降至目前的2000~4000万个。

52009年,广西医科大学第一附属医院男性学科《广西在校大学生性健康调查报告》,217例大学生志愿者年龄在18岁至25岁,平均21.6岁,均为未婚。这些志愿者在献精液检查前,从未进行过精液检查,且未怀疑过自己的生育能力。

结果显示:精液质量正常者94例,占43.3%,精液质量异常者123人,占56.7%

123例精液质量异常的大学生志愿者中,又以精子活力及活率异常为主,其中97例精子活力异常,87例精子活率<60%17例精子密度异常,还有64例精子正常形态率<70%38例精液量<2ml,这些数据都说明,抽样调查的在校大学生存在明显的精子质量问题。

6、《凤凰周刊》20092月刊文,上世纪二三十年代,中国医院临床精子数量正常参考值为每毫升1亿个,上世纪80年代降为0.4亿个/毫升,而目前的参考值则为0.2亿个/毫升——在过去属于少精症范畴。

2000年,上海市人类精子库先后对近500名捐精者进行精子检测,以0.2亿个/毫升的精子密度为标准,约有半数人无法通过。医生们感叹,以前在医院作精液分析的男性,一次射精就可以把试管装满,而现在连试管1/2的刻度都达不到。

通过以上文献,我们能看到:

11983年,中国男性的精子密度还能达到1.03亿/毫升,到1996年就下降到0.83亿了。2003-2004年进一步下降到0.64亿和0.51亿(成都大学生的2004年数据)。也就是说,20年时间,中国男性的精子密度从1亿下降到0.5亿,下降了整整50%

2、结合凤凰周刊的文章,我们可以发现,中国男性精子在上世纪二三十年代可能约2亿,到上世纪八十年代约1亿。也就是说,50年时间下降了一半。而最近20年就下降一半,下降的速度是在加快的。假设按照这个趋势,估计再过20年,中国男性的精子数量就会下降到0.3亿以下,恐怕要有30-40%的中国男性没法生育了。

31981年,中国男性的排精量还能达到3.31毫升,1995年前后就降低到2.97毫升,2003年下降为2.61毫升,假设现在下降到2.5毫升。则我们能做的对比是:1981年的时候,每次的精子数量约3.3亿个,而今只有1.2亿个。也就是说,男性每次排精的精子总数下降了近三分之二——这是短短30年内发生的事情!

42003年的时候,成都地区大学生精子质量异常率就已经达到37%。短短6年后,广西地区大学生精子质量异常率达到56.7%,显著上升了近20个百分点。那么,这六年发生了什么呢?

数据显示,1990年代中期,我国由大豆净出口国转变为净进口国。到2001/2002年度,我国进口大豆达到1039万吨。而2003/04年度突破2000万吨,2005年达到2659万吨,2007年突破3000万吨,2008年达到3744万吨,2009年更达到4255万吨。

也就是说,过去不到10年时间里,中国大豆进口量增长了300%!到2009年每个中国人平均每年要消耗进口大豆32.7公斤的进口大豆,平均每天超过1.6两。而这些大豆,几乎全是转基因的。

所以,中国男性,尤其是男大学生的精子异常,跟所谓转基因玉米也许关系不大,关系密切的倒是转基因大豆。谁能肯定地说:过去10年,中国人每年耗用的进口大豆从8公斤上升到32公斤与中国男大学生精子质量异常率上升20个百分点没有关系呢?

或曰:人家欧美国家不也照吃转基因大豆吗?你杞人忧天个啥?

答曰:白种人能吃的东西,都适合黄种人吗?

参考资料:

60)美国不育率高达16%:每6对夫妇有一对遭遇不孕不育

博文:http://t.cn/Ry8OEo3 微博:http://weibo.com/1269923485/CEl10dkTw

61美国不生不育率不断上升;生育率2007年以来不断下降

博文:http://t.cn/Ry8HULR 微博:http://weibo.com/1269923485/CElAzcGH8

62)中国不孕不育患者超5000万占育龄夫妇15%西南地区达20%

博文:http://t.cn/RyRU8PC 微博:http://weibo.com/1269923485/CEqvPqpUe

63) 中国更真实不孕不育患病率趋向25%-30%之间的事实依据

博文:http://t.cn/RynUZky 微博:http://weibo.com/1269923485/CEBLh9p7P

64) 美国中国学者皆认为造成不孕不育的男性因素占一半

博文:http://t.cn/Rym4Uqg 微博:http://weibo.com/1269923485/CEJlIl1HU

65无精子少精子精子活力差精子畸形是男性不育首位原因

博文:http://t.cn/Rymb76T 微博:http://weibo.com/1269923485/CEJpyuDCk

66)精子数显著减少致这样男性精子获男性后代更减少

博文:http://t.cn/RymoFeC 微博:http://weibo.com/1269923485/CEL2n130S


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