Why chemotherapy doesn’t work - Cancer tumors confirmed to have stem cells that regenerate tumors
2012 09 13

By Jonathan Benson | NaturalNews.com

Three recent studies published in the journals Nature and Science shed new light on why chemotherapy, a common conventional treatment for cancer, is typically a complete failure at permanently eradicating cancer. Based on numerous assessments of how cancer cells multiply and spread, researchers from numerous countries have confirmed that cancer tumors generate their own stem cells, which in turn feed the re-growth of new tumors after earlier ones have been eliminated.

In one of the studies published in the journal Nature, researcher Luis Parada from the University of Texas (UT) Southwestern Medical Center in Dallas and his colleagues decided to investigate how new tumors are able to re-grow after previous ones have been wiped out with chemotherapy. To do this, Parada and his team identified and genetically labeled cancer cells in brain tumors of mice before proceeding to treat the tumors with conventional chemotherapy.

What they discovered was that, although chemotherapy appeared in many cases to successfully kill tumor cells and temporarily stop the growth and spread of cancer, the treatment ultimately failed to prevent new tumors from forming. And the culprit, it turns out, was cancer stem cells that persisted long after chemotherapy, which quietly prompted the re-growth of new tumors later down the road.

A second study published in Nature found similar results using skin tumors, while a third published in the journal Science confirmed both of the other studies in research involving intestinal polyps. It appears as though, all across the board, cancer tumors possess an inherent ability to produce their own stem cells, which can circulate throughout the body and develop into tumors. And traditional cancer treatments do nothing to address them.



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Read the full article at: naturalnews.com




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