The DailyGalaxy writes:
“Everyone has assumed we age by rust. But how do you explain animals that don’t age? Some tortoises lay eggs at the age of 100, there are whales that live to be 200 and clams that make it past 400 years.” —Professor Stuart Kim
Prevailing theory of aging challenged by Stanford University Medical School researchers. Their discovery contradicts the prevailing theory that aging is a buildup of tissue damage similar to rust. The Stanford findings suggest specific genetic instructions drive the process. If they are right, science might one day find ways of switching the signals off and halting or even reversing aging.
“We were really surprised,” said Stuart Kim, who is the senior author of the research. Kim’s lab examined the regulation of aging in C. elegans, a millimeter-long nematode worm whose simple body and small number of genes make it a useful tool for biologists. Comparing young worms to old worms, Kim’s team discovered age-related shifts in levels of three transcription factors, the molecular switches that turn genes on and off. These shifts trigger genetic pathways that transform young worms into social security candidates.
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