Kwaye uyazi, yintoni na umhlaza?

Abantu bakholelwa ukuba bayazi kakuhle into umhlaza. Ngaloo phantsi kwale kota kufihla akukho sifo mnye, kodwa eziliqela, yaye zahluke kakhulu enye kwenye. Kukholelwa ukuba igama elithi "umhlaza," yaye elithi "ukufa" - izithethantonye, kodwa izifo ezininzi neoplastic ayipheli kunye ukufa kwabantu. Ngaphezu koko, kudala kusungulwa umzimba ngendlela kwanokufundisa uluntu ngesifo somhlaza ngendlela ecwangcisiweyo (umzekelo wokuqala oncogenes), kodwa alwa kuwo nezifo ezikhoyo. Yaye ngoxa umhlaza uyaqhubeka ngokukhawuleza ehlabathini ukuba ingca uluntu.

Ngoko ke, yintoni na umhlaza? Oku kukwaphula inkqubo yokuzala kunye cell yokuvuselela. Eziphilayo, xa siseko, inkqubo eyenzelwe ukukhusela iimpazamo ezithe zenzeka kwinqanaba zeselula. Nangona kunjalo, le ndlela phambi iimeko ezithile ezinzima, kungenzeka ingasebenzi. Ukuba iseli nge inkqubo ze elinye (okanye kungaba kuncinane kakhulu), umzimba uya kubatshabalalisa. Kodwa xa ezi seli nande engalawulekiyo, ithumba ibonakala. Nangona zaso zikhule kuphela - nethumba ithathwa ukuba ingozi, kwaye kuphungula kuza lula ukumelana nale ngxaki. Kodwa ukuba iiseli njengesi ahlasele amalungu nezihlunu ezikufutshane, umzimba ufunda ukucinga ukuba umhlaza enjalo.

Ingozi iphambili yale sifo kukuba iiseli "ephosakeleyo," na "sihlasela" abamelwane babo usempilweni yokuziphatha engaqhelekanga - leyo nto umhlaza uphathwa kakhulu, kunye nokusetyenziswa iindlela izinto ngokwabo yingozi. Kodwa ke akukho nto enokwenziwa yomhlaza - sisifo ukuba kwiimeko ezininzi kunye intlungu kakhulu, yaye ngaphandle namayeza Bazomelezela Umntu uyafa ngenxa yokothuka. A iiseli mutated ngenkuthalo ukuxhathisa intshabalalo - yiyo ke chemistry radiation.

Unobangela ukungasebenzi le iiseli ingakumbi carcinogens. Ezinye zazo (phenol, amacandelo umsi wecuba, asbestos) mutagenic bebodwa, ngabanye, ezifana utywala, senze ngokungathanga ngqo zezi nokukhawulezisa division cell.

Ezinye iintsholongwane, ezifana hepatitis, nayo unobangela nomhlaza kunokwenzeka.

Enyanisweni zonke eyaziwa kunye radiation factor njengabaya ibonwa. Yintoni ongaziwa: ngobuso radiation aba bantu baninzi kangaka. Kunokuba iyoyikeka kakhulu ukuba umsi - naye abangama-80% abantu olujamelene nayo.

Kodwa i-kangako unobangela somhlaza na ukutya, yeyona ndlela isetyenziswa kummandla othile. Ngokomzekelo, eJapan, apho ixhaphake kakhulu umhlaza esiswini. Okanye le United States, apho lwaqho umhlaza kwesisu. Ngaphezu koko, xa utshintsha indawo esisigxina yokuhlala (okt utshintsho yokudla) abemi ezintsha ukutshintsha umngcipheko yelizwe bakhe esichengeni a ezweni entsha.

Kaloku, unobangela yokugqibela umhlaza - imizila yemfuza, ukuphazamiseka hormone iingxaki nezifo (ezifana AIDS).

Qonda ngokwabo yintoni na umhlaza, akukho mfuneko lithemba, xa ekule unesifo kwabantu bakhe okanye esimthandayo. Isibindi nokuqina unako ukusebenza izimanga! Imbali sifo "umhlaza" uyazazi iimeko apho amayeza mihla, amandla omoya wobuntu yaye ukukholelwa izigulane basindiswe ngcono, kwenzeka, yaye nathemba.