Environmental hormone: Endanger and know how much in health

Environmental hormone: Endanger and know how much in health
A few days ago, a research of the institute of public health of Harvard University revealed, the person investigated drinks the container in order to gather carbonic acid ester (PC) After the that plastics make bottled one week such as water, pairs of the intersection of phenol and content of A will increase by 69 in the urine. Research showed before this, it is carcinogenic to be used in a pair of phenol A made of water bottle, food container and feeding bottle extensively, and perhaps initiate the endocrine system function disorderlily, especially may cause the harmful effects to the neonate and nervous system development of infant and pre-school children under 18 months.This information has caused the public extensive concern. In fact, besides pair of phenol A, the rubbish burns drama poisonous substance quality dioxin discharged in field, used as insecticide, weed killer, bactericide pesticide DDT, has been been used in the electric equipment more products all the time chlorine unite heavy metal such as benzene and lead, mercury, cadmiumed, within the range of environmental hormone. Then, through what route on earth does environmental hormone enter the human body and cause influence on people's health? How great on earth is this kind of influence? How should we take precautions against? The reporter has interviewed relevant experts.Infiltrate the internal one " Interferon of endocrine " "Now, because air, water, food are mixed with a large amount of pollutant, the mankind will live in ' the ocean of environmental hormone ' inevitably. " The healthy drinking water expert of association for promotion of international exchange of China's medical treatment and health care Professor Li Fuxing says, "the human body will regard environmental hormone that can't be discerned as ' one of own side ' by mistake, makes it become a kind of ' interferon of endocrine ', influence the endocrine function of the organism. The danger of pair of phenol A has caused the extensive attention of the governments of various countries, Canada has already taken the lead in prohibiting selling and containing PC plastic baby's feeding bottle of a pair of phenol A. ""Study the harmful thing that can interfere with the biological endocrine system verified at present, include more than 70 kinds of chemical material and their derivatives. " Li Fuxing points out, a lot of weed killer, insecticide, medical medicine and heavy metal,etc. are environmental hormone, some preservatives, plasticizer, detergent, aromatic aromatics, coating dyestuffs, cosmetics material,etc. contain some environmental hormone too. They will enter the human body through routes such as air, food and water,etc..According to the introduction of Li Fuxing, consequences that environmental hormone causes are in many aspects, among them the most noticeable one is a research of Denmark Copenhagen university of 1993. This result of study shows: From 1940 to 52 years of 1992, already 113 million was reduced to 66 million by each ml on average for the male sperm's average density, have dropped by 41.5; The ejaculating amount is reduced from 3.40 ml on average to 2.75 ml each time. Researchers think, this may result from influence of environmental hormone.Relevant scientific research is still starting stage in the placeThree institute chemistry in Peking University is poisoned the expert Professor Zhao JinYuan to point out, the effect that environmental hormone produces is at a specified future date, mainly see all colonies in its consequence, it is still unable to relate the clinical case with environmental pollution at present.Zhao JinYuan says, hormone exerts an influence to need course of a long-term on the human body, receiving amount- The result is concerned ' Quantitative relation of effects and its dosage of the chemicals) With hour- The result is concerned ' Law that the chemicals density of blood plasma makes the effect change with lapse of time) Restriction. "Estrogen in chemical constitution and the human body of pair of phenol A is very similar. After using PC plastic bottle to drink the water, the corresponding increase of a pair of phenol A concentrate is natural in the human urine, but can not extrapolate this conclusion arbitrarily, that suggest accepting the target that tests may become ' womanlike '. "Zhao JinYuan points out, at present, the function mechanism of environmental hormone is still not very clear. It appraises its to be dangerous making, contacting standarding, confirming influence degree in mankind their, grasping many kinds of environmental cooperative effect of hormone, research that need all be deeper. "Compared with some Northern European countries, the study on environmental hormone of our country is still starting stage in the place, transformation and protection of the ecological environment are relatively backward. So, we should improve the degree of attention to this question even more, make and study the plan actively, increase the input in relevant scientific research. "The intersection of biotechnology and FeiHong Zhao, researcher of research institute, IDM of Beijing, say pairs of the intersection of phenol and A on the plastic container dissolve what is content to reach ink really too, we still have no way of knowing. But comparatively speaking, purified water, mineral water and hot water make the harmful substance in the plastic bottle dissolve out more easily.Zhao FeiHong reminds everybody to try hard to use the glass container while drinking the water, contact few containers that macromolecule materials such as the plastics,etc. make into; The students in middle and primary schools try hard not to need the plastic container to contain hot water, purified water or beverage; Parents mustn't use the plastic bottle to feed the warm milk to the baby.The environmental security should depend on " The standard " Check onAs to the thing that the environmental endocrine interference thing which we can't get around, chief researcher of China environmental research institute Liu ZhengTao says, ordinary people needn't feel panic at first. "Have stipulated clearly in the national standard that of different adverse factors that permits the density at most, this is a relatively safe density that will not exert a direct or indirect and harmful influence on health. " Liu ZhengTao says, " only every relevant unit and supervision department carry out according to the regulation strictly, limit the density of the environmental material to standard value, the environment, eating the food entered, water drunk that we survive is safe. "Liu ZhengTao says, the standard needs to bring in constant renewal in too. "In the developed country, the environmental sanitation standard generally will publish a upgraded edition 10 every 5 years. But standard relatively stable, upgraded edition go on the part revise or augment to original standard just. At present, environment and hygiene management of our country are being integrated with the world progressively. So long as there is a control standard of new material in the world, generally all of us will combine the detailed conditions to study and keep up with rapidly. " According to the stipulations of sanitary standard of our country, it should not be greater than 0.05 mg/kg to gather dissolving the appearing amount of phenol in carbonic acid ester resin and shaping product.Though renewal of standard need a long time, Liu solicit great wave, say this mean we live among danger constantly right away. "In our country, the production or importing and must be declared, registered to the country of a kind of new chemical, and offer relevant the intersection of health and data of chemical this, through put into production after the qualified risk assessment. "Liu ZhengTao thinks, on the execution links of the standard, it must be strong that the responsible institution makes policy and supervises, ordinary people do not use and exceed standard for the content of the harmful substance again the question worries about.
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