Isikhathi sokulandelana sikhombisa inani langempela lomuntu owake waphila. Ngamanye amazwi, inani lezinsuku, izinyanga noma iminyaka umuntu aphilayo alishintshi , kungakhathaliseki ukuthi impilo enempilo - ngisho neyodwa egcwala imikhuba emihle yokuzivocavoca kanye nemikhuba yokudla - bayaphila.
Wonke umuntu osezingeni elilinganayo. Abanye abantu babonakala bekhula ngokushesha kakhulu, kuyilapho abanye bebhekana nokuguga ngezinga elincane kakhulu.
Sonke sihlangabezane nomuntu othile okokuqala obonakala encane kakhulu - noma ekhulile - kunalokho akhona ngempela.
Umehluko Phakathi Kwesikhathi Esilandelanayo Nezikhathi Eziphilayo
Njengabantu, sinaminyaka emibili ehlukene: ukulandelana nokulandelana kwemvelo . Isikhathi sokulandelana yisibalo seminyaka umuntu owake waphila, kanti iminyaka yobudala ibhekisela ukuthi umuntu udala kangakanani. Isikhathi sezinto eziphilayo, esibizwa nangokuthi ubudala bokuphila, sithatha izinqumo eziningi zokuphila, kuhlanganise nokudla, ukuzivocavoca kanye nemikhuba yokulala, ukubiza amagama ambalwa.
Indlela esibudala ngayo ingaphezu kokulawula kwethu. Ngokuyinhloko kuthonywe izakhi zofuzo, kodwa ucwaningo lwamuva luveza ukuthi ukuguga kungathinta kanjani izinto zangaphandle, kuhlanganise nokudla, ukuzivocavoca, ukucindezeleka nokubhema. Abaningi bama-gerontologists bakholelwa ukuthi isikhathi sokulandelana isikhathi sokuba yisibalo esingaphelele ngoba asiqapheli lezi zinto zangaphandle.
Yeka ukuthi i-Biological Age isinqunywe kanjani
Ucwaningo lubonisa ukuthi i- telomeres ne- DNA methylation badlala izingxenye ezinkulu ekugugeni.
I-Telomeres yi-nucleotides ekupheleni kwama-chromosomes. Zigcina imikhawulo yama-chromosomes ekuwohlokeni nasekuhlanganyeleni ne-chromosome eseduze. Ngokuyinhloko, ama-telomeres aqondisa ukuthi masinyane amangqamuzana akhula kanjani futhi afe.
Ososayensi bathole ukuthi ukukhula kwesikhathi somuntu, isikhathi esifushane se-telomeres.
Ucwaningo oluthile lwathola ukuthi abantu abanama-telomere amancane babengase babe nokufa okuncane noma bahlakulele isifo noma isifo se-neurodeergenerative. Esinye isifundo sikhombisa ukuthi ukulondoloza impilo enempilo kungaba empeleni ukuguqula ukuguga ngokwandisa ama-telomere, izindaba ezinhle zesikhungo sethu esikudala.
Ososayensi basebenzisa i- DNA methylation ukuthola isikhathi semvelo. Amaseli asebenzisa i-DNA methylation ukulawula ukukhuluma kwezakhi. Ngamanye amazwi, i-DNA methylation iguqula izakhi zofuzo. Nakuba injongo yangempela ye-methylation engaziwa, kubalulekile ekuthuthukiseni kwe-embryonic, ukushicilelwa kwe-genomic, ukuzinza kwe-chromosome nokuningi.
Ucwaningo oluthile lwafuna ukuthola ukuthi i-DNA methylation iyindlela enembile yokubikezela iminyaka ngokuqoqa amasampula angu-8 000 wama-51 amathiskhi namaseli. Amaningi amathisamu namasampuli eselifundiswa ayenesikhathi esifanayo nesikhathi sokuphila. Abanye abazange. Ucwaningo luye lwathola ukuthi izingxenye ezithile zomzimba zihamba ngokushesha kunabanye. Isibonelo, izicubu zesifuba ezinye zezicubu ezindala emzimbeni. Ucwaningo lwathola ukuthi ngisho nezicubu zesifuba ezinempilo zingaba neminyaka emithathu ubudala kunomzimba womuntu wesifazane. Uma izicubu zesifuba ezinempilo zikhona eduze kwezicubu zomdlavuza, isilinganiso seminyaka engu-12 ubudala .
Uma unesithakazelo ekuhloleni iminyaka yobudala ngokwengeziwe, zijwayele nge- RealAge , isisetshenziswa esimnandi sokuphila isikhathi eside.
> Imithombo:
> http://www.healio.com/optometry/low-vision-geriatrics/news/print/primary-care-optometry-news/%7B94d8411e-1cad-4070-b7b5-576f058645e7%7D/look-beyond-a- iziguli-ukulandelana kwesikhathi
> http://www.medicaldaily.com/human-bodys-chronological-and-biological-age-may-differ-why-your-breast-tissues-are-326884