Mercury mu Tuna: Kodi Nsombayi Ndi Yabwino Kudya?

Zamkati

• Chiyambi
• Kodi Yayipitsidwa Motani?
• Mipata Yosiyanasiyana Mitundu
• Mlingo Wofotokozera ndi Magulu Otetezeka
• Zowopsa Zowonekera kwa Mercury
• Kodi Muyenera Kudya Tuna kangati?
• Anthu Ena Ayenera Kupewa Tuna
• Mfundo Yofunika Kwambiri

Chiyambi

Tuna ndi nsomba zamadzi amchere zomwe zimadyedwa padziko lonse lapansi.

Ndiwopatsa thanzi modabwitsa komanso gwero lalikulu la mapuloteni, omega-3 fatty acids ndi mavitamini a B. Komabe, imatha kukhala ndi milingo yambiri ya mercury, chitsulo cholemera choopsa.

Njira zachilengedwe - monga kuphulika kwa mapiri - komanso zochitika m'mafakitale - monga kuyaka malasha - zimatulutsa mercury m'mlengalenga kapena kunyanja, pomwe imayamba kukhazikika m'nyanja.

Kudya kwambiri mercury kumalumikizidwa ndi mavuto azaumoyo, kukweza nkhawa zakudya tuna nthawi zonse.

Nkhaniyi ikufotokoza za mercury mu tuna ndikukuwuzani ngati zili bwino kudya nsomba iyi.

Kodi Yayipitsidwa Motani?

Tuna ili ndi mercury yambiri kuposa zinthu zina zodziwika bwino zam'madzi, kuphatikiza nsomba, oyster, nkhanu, scallops ndi tilapia ().

Izi ndichifukwa choti nsomba zimadyetsa nsomba zazing'ono zomwe zawonongeka kale ndi mitundu yambiri ya mercury. Popeza kuti mercury sichimasulidwa mosavuta, imamangidwa m'matenda a tuna pakapita nthawi (,).

Mipata Yosiyanasiyana Mitundu

Mulingo wa mercury mu nsomba umayezedwa mwina m'magawo miliyoni (ppm) kapena ma micrograms (mcg). Nayi mitundu yodziwika bwino ya tuna komanso kuchuluka kwake kwa mercury ():

Mlingo Wofotokozera ndi Magulu Otetezeka

US Environmental Protection Agency (EPA) imanena kuti 0.045 mcg wa mercury pa paundi (0.1 mcg pa kg) ya kulemera kwa thupi patsiku ndiye mulingo woyenera kwambiri wa mercury. Ndalamayi imadziwika kuti mlingo wothandizira (4).

Mankhwala anu a tsiku ndi tsiku a mercury amadalira thupi lanu. Kuchulukitsa nambala ija ndi asanu ndi awiri kumakupatsani malire anu a mercury sabata iliyonse.

Nazi zitsanzo za kuchuluka kwa zolembedwera potengera zolemera zamthupi zosiyanasiyana:

Popeza mitundu ina ya tuna ndi yochuluka kwambiri mu mercury, 3-ounce imodzi (85-gramu) imodzi imatha kukhala ndi mankhwala a mercury omwe amafanana kapena kupitilira muyeso wowerengera wamlungu sabata.

Tuna ndi yamtengo wapatali poyerekeza ndi nsomba zina. Mitundu ina yamtundu wa tuna itha kupitilira kuchuluka kwa mercury komwe mutha kudya sabata iliyonse.

Zowopsa Zowonekera kwa Mercury

Mercury mu tuna ndi nkhawa yathanzi chifukwa cha zoopsa zomwe zimapezeka pakupezeka kwa mercury.

Monga momwe mercury imakhalira m'matumba a nsomba pakapita nthawi, amathanso kudziunjikira mthupi lanu. Kuti muwone kuchuluka kwa mercury mthupi lanu, dokotala amatha kuyesa kuchuluka kwa mercury m'mutu mwanu ndi magazi.

Kutulutsa kwapamwamba kwambiri kwa mercury kumatha kubweretsa kufa kwa ma cell am'bongo ndipo kumapangitsa kuti pakhale zovuta zamagalimoto, kukumbukira ndi kuyang'ana ().

Pakafukufuku wina mwa akuluakulu 129, omwe ali ndi mercury ochulukirapo adachita zoyipa kwambiri pakuyesa kwabwino kwamagalimoto, malingaliro ndi kukumbukira kuposa omwe anali ndi mercury yotsika ().

Kuwonetsedwa kwa mercury kumathandizanso kukhala ndi nkhawa komanso kukhumudwa.

Kafukufuku wa achikulire omwe amapezeka ndi mercury kuntchito adapeza kuti adakumana ndi zipsinjo zowonjezereka komanso zizindikilo zodandaula ndipo sanachedwe kukonza zambiri kuposa omwe amawongolera ().

Pomaliza, mercury buildup imalumikizidwa ndi chiopsezo chachikulu cha matenda amtima. Izi zikhoza kukhala chifukwa cha ntchito ya mercury mu okosijeni wamafuta, njira yomwe ingayambitse matendawa ().

Pakafukufuku mwa amuna opitilira 1,800, omwe adadya nsomba zochuluka kwambiri ndipo anali ndi ziwopsezo zazikulu kwambiri za mercury kawiri amafanana ndikufa ndi matenda amtima ndi matenda amtima ().

Komabe, kafukufuku wina akuwonetsa kuti kupezeka kwambiri kwa mercury sikukugwirizana ndi chiopsezo chowonjezeka cha matenda amtima komanso kuti zabwino zodyera nsomba zaumoyo wamtima zitha kuposa ngozi zomwe zingachitike mukamamwa mankhwala a mercury ().

Mercury ndi chitsulo cholemera chomwe chimatha kuyambitsa mavuto azaumoyo. Kuchuluka kwa mercury mwa anthu kumatha kuyambitsa zovuta zamaubongo, kudwala kwamaganizidwe ndi matenda amtima.

Kodi Muyenera Kudya Tuna kangati?

Tuna ndi yopatsa thanzi modabwitsa komanso yodzaza ndi mapuloteni, mafuta athanzi ndi mavitamini - koma sayenera kudyedwa tsiku lililonse.

A FDA amalimbikitsa kuti achikulire adye ma ounike 3-5 (85-140 magalamu) a nsomba 2-3 nthawi pasabata kuti athe kupeza omega-3 fatty acids ndi zinthu zina zopindulitsa ().

Komabe, kafukufuku akuwonetsa kuti kudya nsomba zam'madzi pafupipafupi kuposa 0.3 ppm kumawonjezera kuchuluka kwa magazi mu mercury ndikulimbikitsa thanzi. Mitundu yambiri ya tuna imaposa kuchuluka kwake (,).

Chifukwa chake, akulu akulu ayenera kudya tuna pang'ono ndikuganiza zosankha nsomba zina zomwe ndizotsika kwambiri.

Mukamagula tuna, sankhani mitundu ya skipjack kapena zamzitini, zomwe sizikhala ndi mercury ngati albacore kapena bigeye.

Mutha kudya nsomba za skipjack ndi zamzitini pamodzi ndi mitundu ina yotsika kwambiri ya ma mercury, monga cod, nkhanu, nsomba ndi scallops, monga gawo la nsomba za 2-3 pamlungu ().

Yesetsani kupewa kudya albacore kapena yellowfin tuna kangapo pamlungu. Pewani bigeye tuna momwe mungathere ().

Skipjack ndi nsomba zamzitini zowala, zomwe ndizochepa kwambiri mu mercury, zimatha kudyedwa ngati gawo la chakudya chopatsa thanzi. Komabe, albacore, yellowfin ndi bigeye tuna ali ndi mercury kwambiri ndipo ayenera kuchepetsedwa kapena kupewa.

Anthu Ena Ayenera Kupewa Tuna

Anthu ena amakhala pachiwopsezo cha mercury ndipo amayenera kuchepetsa kapena kupewa kwathunthu ku tuna.

Izi zikuphatikizapo makanda, ana aang'ono ndi amayi omwe ali ndi pakati, akuyamwitsa kapena akukonzekera kutenga pakati.

Kuwonetsedwa kwa ma mercury kumatha kukhudza kukula kwa mluza ndipo kumatha kubweretsa zovuta muubongo komanso chitukuko.

Pakafukufuku mwa amayi 135 ndi makanda awo, ppm iliyonse yowonjezerapo mankhwala a mercury yomwe amayi omwe ali ndi pakati adamangiriridwa kutsika kwa mfundo zopitilira zisanu ndi ziwiri pamayeso oyeserera a ubongo wa makanda awo).

Komabe, kafukufukuyu adawona kuti nsomba zotsika kwambiri zimalumikizidwa ndi zambiri zamaubongo ().

Akuluakulu azaumoyo pakadali pano amalangiza kuti ana, amayi apakati ndi amayi oyamwitsa azichepetsa kuchepa kwa tuna ndi nsomba zina zam'madzi ambiri, m'malo mwake azikonzekera 2-3 ya nsomba zotsika kwambiri pamlungu (4,).

Makanda, ana ndi amayi omwe ali ndi pakati, akuyamwitsa kapena akuyesera kutenga pakati ayenera kuchepetsa kapena kupewa tuna. Komabe, atha kupindula ndikudya nsomba za mercury zochepa.

Mfundo Yofunika Kwambiri

Kuwonetsedwa kwa Mercury kumalumikizidwa ndi mavuto azaumoyo kuphatikiza kusagwira bwino ntchito kwa ubongo, nkhawa, kukhumudwa, matenda amtima komanso kukula kwa makanda.

Ngakhale tuna imakhala yathanzi kwambiri, imakhalanso ndi mercury yambiri poyerekeza ndi nsomba zina zambiri.

Chifukwa chake, iyenera kudyedwa pang'ono - osati tsiku lililonse.

Mutha kudya nsomba za skipjack ndi zopepuka zamzitini limodzi ndi nsomba zochepa za mercury kangapo sabata iliyonse, koma muyenera kuchepetsa kapena kupewa albacore, yellowfin ndi bigeye tuna.