Vatsvakurudzi veAmerican Centers for Disease Control and Prevention (CDC) vakabudisa zviwanikwa zvinoratidza kuti vakadzi veAmerica-kunyanya avo vane ineodine yakadyiwa kudya-vari pangozi ye hypothyroidism nekuda kwekutsvaga kwemaitiro ekutsvaira chepfu.
Kwemakore, pane zvave zvichinetseka nezve perchlorate effect pane utachiona. Nyaya yacho inokakavadzana, zvisinei, sezvo hurumende dzakatarisa, mapoka ezvakatipoteredza, vagari venyika, varwi, uye vanochengetedza zvidziviriro vanoita kuti kusvibiswa kwave kuchienda mberi uye mberi pamusoro pemigumisiro chaiyo yehutano, mirayiridzo yehutano hwekuchengetedza, uye kuti yakawanda sei inogamuchirwa zvokudya zvedu nemvura.
Mune rumwe ruzivo, National Academy of Sciences panel yakaronga kuti kupisa kunokanganisa utachiona hwekodzero yekuwana iodine, asi kuti migumisiro yacho yaizoitika chete nekusvika kumazinga akakwirira ekutsvaga. Iyi CDC yekudzidza, zvisinei, inoratidza kuti kwete chete kungofanana nehuwandu hwekubuda pachena, asi, kwenguva yekutanga, yakaratidza kuti kunyange maitiro akaderera ekutsvaga (mazinga anowanikwa kune vakawanda veAmerica) anogona kuva nemigumisiro inokuvadza kune utachiona.
Perchlorate inonzi inotemwa yemafuta eredetetome yakawanikwa kuti inosvibisa chikamu chekupa mvura yekunwa kwenyika, uyewo michero, miriwo uye mbeu inomirirwa nemvura yakasvibiswa-yakasvibiswa, uye mukaka nemukaka wemakaka kubva kumhou dzinodyiwa pauswa hwakasvibiswa. Inogona kudzivisa kukwanisa kwetachiona kubata iodine kubva muropa.
Iodine ibhokisi rekuvaka rehomoni yehomoni. Iodine yepamusoro, uye / kana kukwana kweglandisi yekuwana iodine kunogona kudzivirira utachiona kuti urege kubudisa hutori yakakwana yehutori, zvichiita kuti utachiona husingaiti, kana kuti hypothyroidism.
Hypothyroidism inogona kuita kuti uwedzere kuwedzera, kuneta, kuora mwoyo, kusabereka, kupererwa pamuviri, uye kunoonekwa sechinetso chechirwere chemwoyo. Vana vemadzimai avo vane hypothyroid vari pangozi yakawanda yezvinetso zvekuziva uye zvinokurudzira, kana, mumatambudziko akaoma, cretinism nekuremererwa kwekuzvarwa.
Dare reCDC rakatarisa varume nevakadzi 2 299, vane makore gumi nemaviri nekukura, avo vakapinda mune imwe yeNational Health and Nutrition Examination Surveys (NHANES).
Vaiongororai mazamu emakirini, pamwe chete nehomoni yehomoni thyroxine (T4) uye utachiona-inosimudzira hormone (TSH) muropa. Zvakawanikwa nevatsvakurudzi ndezvokuti kuvapo kwekutengesa kwakange kuri kufanirwa kwehutachiona hwehutachiona mumadzimai, asi kwete varume.
Vatsvakurudzi vakabva vataura nezvevakadzi vane huwandu hwe-iodine mazinga maererano neboka re-iodine rezasi. Madzimai ane huwandu hwe-iodine mazinga, vakawana hukama hushoma pakati pezvikwata zvinotarisana neTSH. Asi mumadzimai ezasi-iodine, pakanga paine hukama hwakasimba pakati pehutachiona hwemazinga uye TSH yakakwirira uye yakadzika T4, kuratidza hypothyroidism.
Vakadzi vane pamuviri vari pangozi yakakosha nokuti pamuviri atoisa kuoma kwetachiona basa, uye utachiona hunokwana hunodiwa kuti uchengetedze pamuviri pamwe chete nekudzivisa matambudziko ekufungisisa kana kukura mumwana. Vakadzi vatova kakanyanya hypothyroid vanewo njodzi yakawanda nokuti zvinokonzerwa nevechlorate zvinogona kukuvadza zvakanyanya zviripo kune hypothyroidism.
Maererano neCDC:
Vakadzi makumi matatu kubva kuzana kubva muzana yevakadzi muUnited States vane urusi hweyodini huri pasi pe100 μg / L, iyo yaiva yepamusoro-iode yepamusoro inoshandiswa pakudzidza. Kutarisa kune avo vane mazinga eodhini madiki, pamwe chete nevakadzi vane pamuviri, uye avo vari muganhu wegodhi hypothyroid kare, Environmental Environmental Group yakagumisa kuti inofungidzirwa kuti mamiriyoni makumi mana eAmerica vakadzika pangozi yakakura kubva pakuonekwa kwevanhu.
Kuwanda Kwakadii Kwengozi?
Maererano neCDC, nhamba yepakati yemvura inowanikwa mumuguta yaiva 2.9 micrograms nereta (microgram neiri rimwe yakaenzana nechikamu chimwe chete pamabhiriyoni). Nekavhareji yemugove inenge yakasvika imwe nehafu haiti pazuva, izvi zvinoshandura kusvika kumakiromita mashanu emakiritsi ezuva rimwe nerimwe. Kunyangwe panguva iyi yakaderera, paiva nemigumisiro yakaipa yakaonekwa pahutachiona. "Nhamba yakachengeteka" yehurumende, kunyange zvakadaro, inowanikwa ka10 purogiramu iyi.
Maererano neEvironment Working Group, CDC inowona kuti kuwedzera kwemvura mumvura zvakaderera sezvikamu zvitatu pamabhiriyoni (ppb) -kufungidzira kwepasipuni imwe yemvura muhova yeOlympic-yakakura-inogona kuva nehutano hwehutano hwevakadzi.
Chii Chaungaita?
Zvinosuruvarisa, pamutengo wevatengi, zvakanyanya kuoma kudzivisa kutengesa, sezvo iri kupararira mune zvokudya zvedu uye mvura. Semuyenzaniso:
- Rimwe rekushanda kweEvironment Working Group (EWG) rakatsvaga rinopfurikidza mune inopfuura hafu yezvese zvese zvakatengwa kare
- Imwe nyanzvi yeEWG yakawanikwa inotarisa mumasero makumi matatu nemakumi matatu nemaviri emukaka muCalifornia
- Dhipatimendi reCalifornia Rekudya neUrima rakawana zvikamu makumi matatu nemaviri kubva pamasero makumi maviri nemaviri emukaka
- Maererano nekuedzwa kunoitwa pasi peEPA's Unregulated Contaminant Monitoring Rule, zvinenge 160 masangano emvura ehurumende munyika 22 dzakasvibiswa nehutachiona
- Perchlorate inogona kuwanika mumusha uye kutengeswa kwezvinhu, uye mazinga akawandisa anowanzoonekwa mumarangi, mazambiringa, raspberries, apricots, mavhoni, lettuce, tomato, basil, kale, sipinashi, uye asperagus.
- Kakawanda, maererano neCDC, 69 muzana yezvokudya zvekudya newaini zvinokwana 1,090 zvakaedzwa zvakanga zvaonekwa kuti zvinenge zvichinyatsooneka.
Maererano neCDC, kupararira kwepakati pemvura uye kwekudya kunoreva kuti maAmerica ane ruzivo rwakapetwa rwezvikamu zvishanu nehafu haundi mabhiriyoni.
Kuti udzivirire utachiona hwako, unogona kuve nechokwadi kuti iwe hausi mumwe wevakadzi vanenge gumi kubva kune gumi vane uroyi hwehuyodini. Mafuta akanaka ezuva nezuva ane iodine anogona kuva nechokwadi chokuti uri kuwana iodine yaunoda. Asi, chengeta mupfungwa, kana iwe uri mumwe wevanhu vasina iodine yakakwana, iodine yakawandisa inogona kukura uye kunyanya kuwedzera hypothyroidism nemamiriro ezvinhu ehutachiona.
Izvozve inyaya inodanidzira kuti vagari vemo vateere. Semuenzaniso, pamusangano wenyika, hapana doro remvura yekunwa yekutsvaga. Kutarisirwa kwenyika chete ndeyekuti FDA inotungamira kuchenesa kunowanikwa pamatanho e 24.5 ppb. Rimwe remakurukota ehurumende rezvehutano hwevana rakatsoropodza zvakanyanya mutemo iwoyo, zvisinei, kunyeverwa kuti zvinogona kukonzera kujekesa kunoita neurodevelopmental ngozi kune vana nevana vaduku.
Pahutano hwehurumende, nyika chete iyo iye zvino ine mvura yekunwa yekuchera inonzi Massachusetts, iyo inogadzirisa zviyero zviviri pamabhiriyoni munaJuly 2006. Muna Gumiguru 2006, California neNew Jersey vakanga vachifungisisa mitemo yematanhatu ppb uye mashanu ppb .
Taura nevatongi vehurumende vehurumende uye uvakurudzire kuti vatore mitemo yakasimba yehuwandu hwemvura yenyu. Uye kukurudzira vezvematongerwo enyika kuti vateerere mitemo yenyika. EWG inokurudzira kuti hurumende yehurumende ipe mutemo wemvura yekunwa isingasviki 0,1 zvikamu pamabhiriyoni evanhu vanopera.
Uyewo, kukurudzira vezvematongerwo enyika kuti vateerere maitiro ekuchenesa maitiro ezvisikwa zvakasvibiswa nemauto uye nzvimbo dzepasi. Kubvumidza kunatswa kwemasikirwo akange aripo uye kushandiswa kwemvura yakasvibiswa ndiyo nzira dzega dzekudzikisa kuonekwa kwechiedza.
Renee Sharp, muongorori weEWG uyo akadzidza chimiro, akazvipupurira achiti:
I Pentagon uye avo vanozvidzivirira, avo vane mutoro wehuwandu hwemvura inonwiwa mumvura yekunwa, vakashinga zvakaoma kurwisana nemagariro ehurumende, vachikakavadzana kuti kuparara hakuiti kutyisidzira vanhu vane utano hwakanaka. Ichi chidzidzo chitsva chinoratidza kuti kunyange kunyange maduku maduku ekutenderera mumvura kana kwekudya anogona kuva nemigumisiro yakajeka pahutachiona hwehutachiona hwevakadzi. Hatigoni kunyatsoteerera nyaya iyi yakakomba yehutano huripo zvakare.
> Sources:
> Blount, Benjamin C. uye. al. "Maitiro ehutano hwehutano hwehutano: Urinary Perchlorate uye Utachiona Hemone Mazinga muVechidiki uye Varume Vakuru Nevakadzi Vakagara muUnited States," Environmental Health Perspectives Branch (EHPB), National Institute of Environmental Health Sciences, National Institutes of Health, Dhipatimendi reMweya reUnited States uye Human Services, Yakabudiswa Gunyana 5, 2006, Online
> "Mamiriyoni 44 Madzimai Ari panjodzi yekushayikwa kweTyroid kubva kuRedet Fuel Chemical," Environmental Working Group Press Release.
> Environmental Working Group Analysis