The Microchip and Cancer Link

I had considered getting one of these and was talked out of it by
my SATZ training group. I just read this and thought I would pass it along.

~~~~~


Itchmo Pet News Daily Digest

Microchip Implants Linked To Animal Tumors In Research Animals



Posted: 09 Sep 2007 08:51 AM CDT



Various veterinary and toxicology studies done since the mid-1990s found

that microchip implants were linked to malignant tumors in some lab

mice and

rats.



"The transponders were the cause of the tumors," said Keith Johnson, a

retired toxicologic pathologist, said in regards to a 1996 study he

led at Dow

Chemical.



The Associated Press is reporting the results of these studies were not

made public by microchip companies or federal regulatory agencies.

When the FDA

was asked which studies they were aware of, they declined to answer.

Microchip

companies and even the American Medical Association said they were

unaware of

these studies.



The studies found that lab mice and rats injected with microchips

sometimes developed subcutaneous "sarcomas" - malignant tumors, most

of them

encasing the implants.



In 1998, a Connecticut study including 177 mice reported cancer incidence

to be slightly higher than 10 percent of research animals implanted with

microchips.



A 2006 study done in France showed tumors in 4.1 percent of 1,260

microchipped mice.



In 1997, a study in Germany reported cancers in 1 percent of 4,279 mice.

The researchers wrote that the tumors "are clearly due to the implanted

microchips."



For some cancer specialists, seeing these results from lab studies is

alarming.



"There's no way in the world, having read this information, that I would

have one of those chips implanted in my skin, or in one of my family

members,"

said Dr. Robert Benezra, head of the Cancer Biology Genetics Program

at the

Memorial Sloan-Kettering Cancer Center in New York.



Dr. Cheryl London, a veterinarian oncologist at Ohio State University said

tens of thousands of dogs have been chipped. So far, veterinary

pathologists

have not reported outbreaks of tumors in the area of the neck, where

canine

implants are mostly done.



The Associated Press reported that there were two published reports about

malignant tumors in two chipped dogs. In one incident, the researchers

said

cancer seemed to be linked to the implant of the microchip. In the

other case,

the cause of the cancer was uncertain.



She added that there is a need for a 20-year study of microchipped dogs to

see the biological effects. Another veterinary oncologist at the

National Cancer

Institute agreed and said this evidence "does suggest some reason to be

concerned about tumor formations."



Source: The Associated Press

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