Chat away all you want on your cell phone — a huge study from Denmark says you probably won't get cancers from it.

The study, published in the Journal of the National Cancer Institute, is the largest yet to find no bad news about the safety of cell phones and the radiofrequency energy they emit.

RESEARCH

Scientists tracked 420,000 Danish cell phone users, including 52,000 who had gabbed on the gadgets for 10 years or more, and some who started using them 21 years ago.

They matched phone records to the famed Danish Cancer Registry that records every citizen who gets the disease _ and reported Tuesday that cell-phone callers are no more likely than anyone else to suffer a range of cancer types.

It continues: Copenhagen's Danish Cancer Society plan to continue tracking the Danish callers until at least some have used the phones for 30 years.

WHY THE WORRIES?

Cell phones beam radiofrequency energy that can penetrate the brain's outer edge, raising questions about cancers of the head and neck, brain tumors or leukemia. Most research has found no risk, but a few studies have raised questions. And while U.S. health officials insist the evidence shows no real reason for concern, they don't give the phones a definitive clean bill of health, either, pending long-term data on slow-growing cancers.

QUOTE

"There's really no biological basis for you to be concerned about radio waves," said John Boice, a Vanderbilt University professor and scientific director of the International Epidemiology Institute in Rockville, Md. "Nonetheless, people are."

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