(not so fast) What you need to know about the new cellphone cancer study (in rats)

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  It’s already giving new ammunition to scientists who never thought the government took the risk seriously enough. But it’s not the final word by any means, especially since other scientists are already finding weaknesses in the design of the study.

 What does it mean for people?

The study “doesn’t necessarily have any relationship to the risk you have when you use a cellphone,” said Kenneth Foster, a bioengineering professor at the University of Pennsylvania who has studied radiation and health. There are a few reasons for this. First, he said, the rats received much more radiation than humans do when they use cellphones. “This is not an exposure that’s at all relevant to the real world,” Foster said.....