Medicina moderna a inceput deja sa redefineasca conceptul de “batranete” si ar putea in curand sa impinga speranta de viata a oamenilor peste bariera considerata pana acum de netrecut a celor 120 de ani, catre 150 de ani, au anuntat oamenii de stiinta de la Universitatea Oxford, citati de Rompres.
Pana in prezent, era unanim acceptata varianta ca exista o limita pentru speranta de viata ce este programata genetic, dar un grup de cercetatori de la Oxford University sustine ca detine date care sa infirme aceasta “prejudecata” stiintifica.
Paul Hodge, directorul programului Harvard Generations Policy, a atras atentia asupra faptului ca guvernele lumii – care se confrunta oricum cu o criza a pensiilor, cu imbatranirea fortei de munca si cu cresterea costurilor sistemelor de asigurari de sanatate – trebuie sa se ridice la nivelul acestei noi provocari – cresterea sperantei de viata pana la 150 de ani.
Richard Miller, de la Michigan University Medical School, sustine ca testele pe cobai, care din punct de vedere genetic sunt foarte asemanatori omului, au demonstrat ca speranta de viata poate fi extinsa cu pana la 40% printr-o modalitate destul de simpla – limitarea consumului de calorii.
In cazul oamenilor acest lucru ar insemna ca speranta de viata in statele dezvoltate sa creasca in prima instanta de la valoarea medie de 80 de ani la 112 ani, ceea ce presupune ca numerosi indivizi sa depaseasca cu mult varsta de 112 ani.
Aubrey de Grey, un expert in gerontologie de la Universitatea Cambridge, merge si mai departe de atat. El sustine ca primele persoane care vor ajunge la varsta de… 1.000 de ani s-au nascut deja. Durate de viata milenare se pot atinge, in opinia sa, prin interventii de intinerire asupra organismului imbatranit, cu ajutorul celulelor stem, a terapiilor genetice si a altor tehnologii care, in cele din urma, vor reusi sa stopeze complet procesul natural de imbatranire.
Doctorul Grey sustine ca daca fiecare astfel de interventie de intinerire a organismului prelungeste intervalul de viata cu nu mai mult de 30 sau 40 de ani, pana in momentul in care va fi nevoie de o noua interventie vor fi disponibile tehnologii si mai noi, datorate progresului stiintific, astfel incat urmatoarea interventie va prelungi si mai mult speranta de viata, pana se va ajunge la sfidarea mortii.
Mai multi ganditori actuali au argumentat insa ca aceasta perspectiva oferita de jocul cu moartea nu este etica, fiind impotriva naturii fundamentale a omului, de fiinta muritoare.
Raspunsul comunitatii stiintifice a venit din partea lui John Harris, profesor de bioetica la Universitatea din Manchester, care a atras atentia asupra faptului ca o societate in care este considerata o virtute salvarea unei vieti omenesti are datoria de a se orienta asupra studiului tehnicilor noi ale medicinei regenerative.
Ei au impreuna 282 de ani!
Titlul de cel mai batran pamantean a fost disputat de-a lungul timpului de mai multe persoane. La ora actuala, recordul omologat de Guinness Book of World Records este detinut de portoricanul Emiliano Mercado Del Toro, care la 17 ianuarie 2006 a implinit 114 ani.
Un barbat din Malaysia, Omar Abas, a fost considerat multa vreme cel mai in varsta om de pe planeta: el a murit la varsta de 141 de ani. Rudele sale sustin ca barbatul s-a nascut la 26 septembrie 1857. Batranul a spus ca secretul longevitatii sale a fost traiul simplu, combinat cu putina gimnastica si o dieta atenta, care sa cuprinda multe fructe si vegetale. Batranul s-a casatorit la varsta de 60 de ani.
Un alt exemplu care a uimit pe toata lumea a fost cel al nepalezului Methyselah Bir Narayan Chaudhary, care a trait pana la 141 de ani. Batranul nu si-a vazut numele in Cartea Recordurilor, dar a fost decorat de fostul rege al Nepalului in 1997. Chaudhary are 23 de descendenti.
Un alt nepalez, Ram Avtar Saha Kanu, pare sa fie cel mai batran om care a trait vreodata: el a murit la varsta de 167 de ani. Din nefericire, el nu si-a putut dovedi varsta, pentru ca a primit certificat de nastere abia in 1988. In document, autoritatile certificau ca Saha Kanu s-a nascut in 1832, in Nepal.
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