You can judge for yourself. Compare the following versions for content and likely consumer behavior. Which version would cause more consumer precautions? I'll leave that up to you.
“Can using a cell phone cause cancer?”
Original version, June 2011 to May 2013: ““In the last 15 years, hundreds of new research studies have investigated whether health problems can be linked to cell phone use. Some of these studies have suggested the possibility that long-term, high cell phone use may be linked to certain types of brain cancer. These studies do not establish this link definitively. Scientists will need to conduct more studies to learn more about this possible risk.”
Precautionary update, June 9: “There is no scientific evidence that provides a definite answer to that question. Along with many organizations worldwide, we recommend caution in cell phone use. More research is needed before we know for sure if using cell phones causes cancer.”
CDC Retraction, August 20: “There is no scientific evidence that provides a definite answer to that question. Some organizations recommend caution in cell phone use. More research is needed before we know if using cell phones causes health effects.”
Should people stop using cell phones?
Original version, June 2011 to May 2013: “Cell phones can save time and even save lives. At the same time, the use of cell phones may carry some risks. These risks likely are comparable to other lifestyle choices we make every day.”
Precautionary update, June 9: “Scientific studies are ongoing. Someday cellphones may be found to cause health problems we are not aware of at this time.
CDC Retraction August 20: “At this time we do not have the science to link health problems to cell phone use. Scientific studies are underway to determine whether cell phone use may cause health effects...”
(3) Are children at greater risk from cell phone use?
Original version, June 2011 to May 2013: "We are not aware of any study that has looked specifically at how radiofrequency exposure might affect children. We do know that children who start using cell phones early in life potentially will be exposed to radiofrequency for longer periods during their lifetimes.”
Precautionary update, June 9: "It’s too soon to know for sure. Children who use cell phones – and continue to use them as they get older – are likely to be around RF for many years. If RF does cause health problems, kids who use cell phones may have a higher chance of developing these problems in the future."
CDC Retraction August 20: “It’s not known if cell phone use by children can cause health problems.”
(4) What cautions should people with pacemakers take with radiofrequency radiation?
Original version, June 2011 to May 2013: "For most digital phones and pacemakers now in use, this does not have an effect if the phone is more than six inches from the implanted pacemaker."
Precautionary update, June 9 "If you have a pacemaker, keep cell phones at least 8 inches away from it."
CDC Retraction August 20 "In the past, RF interfered with the operation of some pacemakers. If you have a pacemaker and are concerned about how your cell phone use may affect it, contact your health care provider."
So, the pacemaker warning is GONE. How does one go from 6 inches distance to 8 inches to NO warning? Plus, CDC does not issue any warnings for people with other medical implants, including deep brain stimulators, or even metal rods, which may concentrate RF energy and cause tissue damage.
Here is the CDC disclaimer on recent retraction of the precautionary worded "easy" version:
Why has the information on this page been updated?
CDC has not changed its position on health effects associated with the use of cell phones. The agency updated these cell phone FAQs in June 2014 as part of efforts to ensure that health information for the public followed best practices, including the use of plain, easy-to-understand, language. During this process, revisions were introduced which inadvertently led some visitors to the web page to believe that a change in position had occurred. The corrected FAQs are now available on this page.
CDC announces changes in public health policy and recommendations through publication in the peer-reviewed literature, usually accompanied by outreach to partners and a media announcement. We apologize for any confusion that resulted from our efforts to ensure that agency information is presented in easy-to-understand language.