“Clear Evidence of Cancer” Concludes U.S. National Toxicology Program Expert Panel on Cell Phone Radiation


Scientific panel advises there is evidence for an association between both heart and brain cancers and cell phone radiation in large-scale animal study.

Expanded Press Release (with radio/TV/print news at bottom of page)

(Triangle Park, NC) March 28, 2018  

Scientific panel advises there is evidence for an association between both heart and brain cancers and cell phone radiation in large-scale animal study.

(Triangle Park, NC) Scientists concluded there is “clear evidence” linking cell phone radiation to the development of cancers in rats. The U.S. government invited an expert panel to make a majority-rules declaration in response to the $25 million U.S. government National Toxicology Program (NTP) study of cell phone radiation in animals. After a three-day review of the study data, they voted to strengthen the conclusions that cell phone radiation caused health effects in the cell phone radiation exposed rats and mice. 

Scientific American and The Nation both ran stories on the issue along with The News and Observer entitling their piece, “Can your cellphone cause cancer? Scientists find definitive link in study of rats.Ira Flatow of Science Friday also featured the scientific conference findings in a radio interview “Is There A Cell Phone Link To Cancer? A Definite Maybe” on March 30, 2018. 

The National Institute of Environmental Health Sciences (NIEHS), National Toxicology Program released a statement about the conclusions of the panel for each endpoint, found here.  NIEHS also wrote an article on the March conclusions of “clear evidence” in an article entitled,  “NTP cell phone studies — experts recommend elevated conclusions.” See the presentation by NIEHS on DNA damage found in rats and mice. 

The peer review panel voted that the malignant schwannoma tumors found in the heart of male rats be scientifically categorized as “clear evidence of carcinogenicity” and that the malignant gliomas found in the brain of male rats be categorized as “some evidence of carcinogenicity.” In addition, they voted that the increased tumors of the adrenal medulla in male rats exposed to the GSM type of cell phone radiation be categorized as “some evidence of carcinogenicity,” adding a new type of tumor thought to be caused by the exposure. The expert panel advised strengthening the conclusions regarding seven different health effects. The panel called attention to statistically significant increases in an unusual pattern of cardiomyopathy, or damage to heart tissue, in exposed male and female rats. The panel highlighted that in Italy a recent animal
study on radiofrequency radiation at much lower radiation levels than the NTP study found the same types of rare malignancies.  

In addition to the heart and brain cancers, statistically significant increased numbers of tumors were found in other organs at one or more of the exposure levels studied, including the prostate gland, pituitary gland, adrenal gland, liver, and pancreas.  See the bottom of this release for a full list of cancer endpoints. 

“What should happen now is the FDA should be immediately working on developing a quantitative risk assessment from this data and in the meantime the FDA, FCC, and other agencies should promote precautionary measures for the population—especially for children,” said Ronald Melnick PhD, who led the design of the NTP study in his 28-year career as a scientist at the National Toxicology Program. Melnick is currently senior advisor to Environmental Health Trust (EHT).

“Enough is enough, how many more deaths would be needed before serious action is taken? Evidence just continues to accumulate. On March 28, 2018,  the external peer reviewers of the National Toxicology Program voted to increase the level of evidence for the causal role of radiofrequency radiation for several tumors and other negative health effects. It’s time for action,” commented Annie Sasco MD, DrPH, former Chief of Research Unit of Epidemiology for Cancer Prevention at the International Agency for Research on Cancer of the World Health Organization and medical advisor to EHT.

“The NTP study found far more than evidence of cancer. Animals exposed in their lifetimes to the same amount of radiation that a human can receive in theirs gave birth to smaller babies with more defects in their hearts. What also makes these results especially compelling is the fact that all well-designed studies of people with 10 or more years of exposures to cell phones find higher risks for comparable tumors—gliomas and acoustic neuromas. Yet exposures continue to increase every day in schools and homes throughout this nation as children are handed two-way microwave radiating devices to use next to their young developing bodies,” stated Devra Davis PhD, MPH, Visiting Professor of Medicine at Hebrew University and President of Environmental Health Trust, who added, “the Ramazzini Study published this week in Environmental Research found statistically significant increases of the same rare cancers as found in the National Toxicology Program study, but at radiation levels significantly lower than those of the NTP. Combined, these two studies strengthen the case that this radiation is a carcinogen. Cautionary action is urgently needed to reduce exposures for children and the rest of us. The chairman of our Business Advisory Group Frank Clegg, former President of Microsoft Canada, has advised: ‘I come from a smart industry. Tell us what we need to do and we will get it done.’”

This animal evidence, together with the extensive human evidence showing increased risk of gliomas of the brain and vestibular schwannomas in humans exposed to prolonged radiofrequency radiation, largely from cell phones, especially if the exposure begins at a young age, coupled with a rising incidence of brain cancers in young people in the U.S., conclusively confirms that radiofrequency radiation is a Category 1 human carcinogen,” explains Anthony Miller MD, Professor Emeritus, Dalla Lana School of Public Health, University of Toronto, medical advisor to EHT, who has served as an advisor to the World Health Organization.   

“The peer reviewers reviewed the tumor data in a transparent scientific process. This landmark U.S. government study, in addition to the recently released Italian Ramazzini study, provides the scientific evidence governments need to take swift action to protect the public,” said Theodora Scarato, Executive Director of EHT who added, “The rollout of 5G small cells must be halted. Schools need to install wired internet networks. Communities should have maintained landlines. Solutions exist such as Ethernet and fiber optic networks. Public Health Departments need to initiate public awareness campaigns to educate the public on how to reduce exposure. People need to understand just how easy it is to use wired connections, instead of wireless radiation, especially at home. Employers need to prioritize this issue and make changes in the workplace to limit and minimize workplace exposures. We have a responsibility to take action on this issue now.”

Dr. Marc Arazi stated that he traveled from France 4000 miles to tell the National Toxicology Program scientists that the way cell phones are radiation tested do not reflect real human exposure and that the exposure levels they used are comparable and in fact lower than radiation exposures people can be experiencing from cell phone use. “In terms of actual use, almost all of our mobile phones expose us to levels 2 to 10 times higher than the limits allowed by the regulations to protect our health. I say this based on government radiation tests conducted between 2012 and 2016 by the French National Frequencies Agency on nearly 400 of the best-selling mobile phones in Europe. This issue is at the origin of the international health and industrial scandal called Phonegate. The radiation measurements found in the French tests far exceed the exposure levels used in the NTP study. I presented these revelations publicly during the  Peer Review session in front of the authors of the study and the scientists of the pane. I was pleased to hear Dr. John Bucher of the NTP explain to reporters how to reduce radiation exposure by keeping the phone at a distance from the body.

“This is an important step forward in our understanding. But the NTP study, in my judgement substantially underestimates the risk. That is because they used a reverberation exposure chamber which lowers the polarization of the electromagnetic field and can also produce substantial amounts of destructive interference. Both of these changes decrease biological effects,” stated Martin Pall, PhD, Professor Emeritus of Biochemistry and Basic Medical Sciences, Washington State University.

“RFR from wireless devices appears to act as a common toxic exposure similar to other chemical toxins and metals. In this increasingly wireless environment, more people will be developing chronic diseases. It will take decades (if it is even possible) to sort out the additive contribution of harm from wireless technology. Your research indicates that guidelines need to be based on biological cellular effects and not thermal effects. Precaution is warranted. Reduction of exposure to RFR is a preventative public health measure,” stated Cindy Russell, MD of Physicians For Safe Technology and author of “Wi-Fi in Schools” and  “A 5G Wireless Future: Will It Give Us a Smart Nation or Contribute to An Unhealthy One?”.

The National Institute of Environmental Health Sciences webcast of the three-day review will be online within days. The NIEHS meeting webpage with powerpoint slide presentations is here.


On  March 26-28, 2018 the NTP expert peer review panel recommended the following actions related to the strength of confidence in the association between the finding and the exposure- NTP’s scale of clear evidence, some evidence, equivocal evidence, and no evidence. For seven cancer endpoints, the peer review recommendations were to increase the level of evidence (noted with a *) They recommended the following strength of evidence classifications  after a review of the study findings.


Clear Evidence of Carcinogenic Activity

  • *Increases in malignant schwannoma in the heart in male rats (GSM and CDMA)  –  clear evidence of carcinogenic activity

Some Evidence of Carcinogenic Activity: The strength of the response is less than that required for clear evidence but is enough to consider it an association. 

  • * malignant glioma in the brain in male rats (GSM and CDMA) – some evidence of carcinogenic activity
  • *Increases in pheochromocytoma (benign, malignant, or complex combined) in the adrenal medulla male rats (GSM) – some evidence of carcinogenic activity

Equivocal Evidence of Carcinogenic Activity: A marginal increase of neoplasms that may be related to the exposure.

  • Increases in adenoma or carcinoma (combined) in the prostate gland in male rats (GSM and CDMA) – equivocal evidence of carcinogenic activity
  • Increases in benign or malignant granular cell tumors in the brain in male rats (GSM) equivocal evidence of carcinogenic activity
  • Increases in adenoma in the pars distalis of the pituitary gland in male rats exposed to both GSM and CDMA – equivocal evidence of carcinogenic activity
  • Increases in  adenoma in the pars distalis of the pituitary gland in male rats CDMA – equivocal evidence of carcinogenic activity
  • Increases in pancreatic islet cell adenoma or carcinoma in male rats (GSM) -equivocal evidence of carcinogenic activity
  • * Increases in malignant schwannomas in the heart in female rats GSM and CDMA –equivocal evidence of carcinogenic activity  


  • Increases in malignant glioma in the brain in female CDMA- equivocal evidence of carcinogenic activity


  • Increases in pheochromocytoma (benign, malignant, or complex combined) in the adrenal medulla  in female rats (CDMA) – equivocal evidence of carcinogenic activity

Additional Findings:

  • DNA damage was significantly increased in the frontal cortex of male mice (both modulations GSM and CDMA), peripheral leukocytes of female mice (CDMA only), and hippocampus of male rats (CDMA only). “These results suggest that exposure to RFR has the potential to induce measurable DNA damage under certain exposure conditions,” stated the NTP scientists in this PDF of the Genotoxicity findings.
  • Cardiomyopathy of the right ventricle in both male and female  exposed animals in both CDMA and GSM.
  • Increases in nonneoplastic lesions in the heart, brain, and prostate gland in male rats (GSM and CDMA).
  • Increases in nonneoplastic lesions in the heart, thyroid gland, and adrenal gland in female rats occurred with exposures to GSM.
  • Increases in nonneoplastic lesions of the brain in females exposed to CDMA.

* Peer reviewers increased the level of strength of evidence from the draft report.

Click here to download and share an infographic about cell phone radiation and cancer.

Environmental Health Trust has compiled key documents and resources so you get the information you need about the National Toxicology Program Study findings.

National Toxicology Program Cell Phone Radiation Study Documents

 “NTP cell phone studies — experts recommend elevated conclusions “ NIEHS published article on the “clear evidence” of cancer conclusions of the peer review.

“Statement of the Conclusions of the NIEHS Peer Review” The NIEHS NTP issued this two page document that lists the final conclusions of the peer review panel for each cancer endpoint.

NIEHS NTP Webpage with powerpoints of presentations from the peer review meetings, Website with Submitted Expert Comments

Video by NIEHS of the three day March 26-28 2018 peer review meeting that includes all presentations and comments. 

Youtube Playlist of excerpts from the three day March 26-28 peer review. 

 Full report/presentation by NIEHS on DNA damage found in rats and mice. Note: This information was presented in 2017 at a conference and found via a public information request.

The Peer Review panel  of experts for the NTP technical Report See it here 

Draft Technical Reports NTP Rat Report: Studies of Cell Phone Radiofrequency Radiation (Rats), NTP Mice Report: Studies of Cell Phone Radiofrequency Radiation (Mice)

National Institute of Health Press Materials

2/1/2018 NIEHS Press Release “High Exposure to Radiofrequency Radiation Linked to Tumor Activity in Male Rats”

***Statement on conclusions of the peer review meeting by NIEHS, released after external peer review meeting. 


New Studies Link Cell Phone Radiation with Cancer, Scientific American March 29, 2018

Can cellphones really cause cancer?, Pittsburgh (KDKA)

Findings of cancer in rodents exposed to cell-phone-like radiation draws crowd to RTP, CBS News

Can your cellphone cause cancer? Scientists find definitive link in study of rats” The News and Observer March 28, 2018

“Researchers find the cellphone-cancer risk is higher than originally thought” The Blaze March 30, 2018

The Nation: How Big Wireless Made Us Think That Cell Phones Are Safe: A Special Investigation: The disinformation campaign—and massive radiation increase—behind the 5G rollout. By Mark Hertsgaard and Mark Dowie, The Nation, March 29, 2018

On Point WBUR NPR Interview “Big Tobacco lied about cigarettes. Is Big Wireless lying about cell phones? We’ll look at the cancer-cell phone connection.”

New Study Links Cancer to Cell Phone Use, NBC DFW March 28, 2018

Advocates for Tougher RFR Standards Welcome Expert Views, Paul Kirby, Senior Editor, TRDaily

“We now have the first clear evidence cell phone radiation can cause cancer in rats” Quartz, March 30, 2018

“Is There A Cell Phone Link To Cancer? A Definite Maybe”  Science Friday Radio 7:56 Minute Radio, March 30, 2018

Cell Phone Radiation Linked to Cancer in New Studies, Interesting Engineering, April 1, 2018



Public Service Announcement on the American Academy of Pediatrics Recommendations To Reduce Cell Phone Radiation Exposure

EHT has created two short videos about safer technology. One is 30 Seconds and the other is one minute and 30 seconds! Shot in Jackson Hole Wyoming and showing in local movie theatres. This PSA includes recommendations by the American Academy of Pediatrics as well as the Vienna, Athens and Cyprus Medical Association recommendations.

Watch the 1.5 Minute Public Service Announcement here


The American Academy of Pediatrics (AAP) has issued specific recommendations to reduce wireless cell phone exposure and updated their online resources for parents concerning cell phones and wireless devices.

“They’re not toys. They have radiation that is emitted from them and the more we can keep it off the body and use (the phone) in other ways, it will be safer,” said Jennifer A. Lowry, M.D., FAACT, FAAP, chair of the AAP Council on Environmental Health Executive Committee in the AAPs press release on the NTP Study Results.

American Academy of Pediatrics Official Letters on Cell Phones and Wireless Radiation

2013 AAP Letter  to FCC Commissioner Mignon Clyburn and FDA Commissioner Margaret Hamburg calling for a review of RF guidelines

2012 AAP Letter to US Representative Dennis Kucinich in Support of the Cell Phone Right to Know Act

2012 AAP Letter  to the FCC Chairman calling for the FCC to open up a review of RF guidelines

News Reports

WMKY Public Radio: AAP Recommends Putting Cellphone Use on Hold for Children’s Health

WebMed: Children Face Higher Health Risk From Cell Phones

Baltimore Sun: Pediatric researchers suggest potential dangers for children from cellphone exposure

Watch more public service announcements on EHTs Public Service Video Playlist here 


Can Chronic Cellphone Use Hinder your Infant’s Development?

By Meghan Ryan

The two most important communicative mechanisms a newborn innately has to navigate his world are eye gaze and crying. From birth, newborns are constantly developing speech, language and communication skills with every response they command from their caregiver. As early as 5 days old, an infant can tailor his cries to reflect hunger, wetness, or discomfort as well as differentiate between mother and caregiver. Additionally, very early on newborns and infants develop prelinguistic skills: eye gaze (signaling a cue for communication) and joint attention – the ability of an infant to rest his or her gaze on a object at the same time the caregiver is looking at the same object. It is speculated that eye gaze between baby and mother is one of the most important prelinguistic skills to occur before verbal communication develops. http://onlinelibrary.wiley.com/doi/10.1111/j.1467-8624.2009.01311.x/full

However, excessive cell phone usage can work to hinder the communicative rhythm and bonding experience that new mothers and infants work to establish, especially within the first six months. Communicative cues can be easily missed and trying to decode differences in newborn cries (hunger vs wet diaper) can become very difficult. As it is so important for new mothers to pay attention to different cries, constant distraction from a cell phone can alter the way the other perceives the cry, thus making it more difficult to decode. Infants are so intuitive early on, that even the slightest delay in response to a coo or a cry can alter the way they perceive their world. Additionally, if a mother is perusing high-emotion content that is so pertinent in Facebook and social media, the overflow of emotion may inadequately color her response to the infant.

Breastfeeding can also be affected by a constant need to search the web or pursue Facebook, taking away from a significant bonding period for mother and baby, according to Erin Odom, author of “The Humbled Homemaker” blog. Physically, the mother may be present but mentally they are “somewhere else”.

Many mothers use the cellphone to pass the time during the long nursing/feeding sessions of early infancy. However, infants are highly communicative during feeding, and texting and social media, when so engrossing, can distract a mother from the needs of the infant.

Chronic cell phone usage such as texting and social media usage could absolutely hinder infant development as a result of missed cues on the part of the mother. The early months of a newborn who continuously has to wait for mother while looking at the cellphone before responding, to cry initiation for communication or other cues, the brain’s connections will actually reorganize around this delay, later dampening the development of instinctual communication between mother and infant.

Additionally, chronic cell phone usage can mean maternal distraction from infant needs, allowing the mother to tune-out and miss potential cues into what their newborn baby needs. As a result the confidence of new moms in their own ability to respond to their infant’s communicative gestures can also be affected.

It is best to put the cellphone aside when engaging in otherwise nurturing activities with new babies so that communicative and prelinguistic cues are attended to and understood. If chronic texting/social media occurs, it is best to remove media from the interaction between mom and baby.

About Meghan Ryan, MS CCC-SLP, CHHC

Meghan is a practicing speech-language pathologist and certified holistic health coach. She is the owner of Smart Speech Inc., a home-based speech therapy consultation service that is available throughout NY. She is also the co-founder of The 360 Parenting Group, a holistic parent coaching service for families of children with special needs. Some of her services include traditional speech language therapy available throughout Westchester County, NY, remote consultation and a unique focus on precautionary practices and parent/caregiver education. For more information, or to schedule a free 30-minute consultation, please visit http://www.smartspeechny.com or contact [email protected]




This video was created by a Byng Junior High School 9th grade science research team as part of their award-winning 2009-10 U.S. Army E-Cybermission project addressing the human health risks of cell phone radiation.



In a recent article, the Green American asks: Do Cell Phones Cause Cancer?

The telecom industry says no, the fine print on cell phone packaging says maybe and some leading scientists say we should be very concerned.

Read on before you dismiss the warnings about cell phones. There’s real cause for concern behind the industry smokescreen.

Click here to read the whole article in PDF


Globally more than four billion phones are in use, with more than half of all users believed to be children and young adults. Over the past two decades, models of the human head have been devised based on imaging studies and used to estimate the extent and rate of radiation energy absorption to the brain, the Specific Absorption Rate (SAR). IEEE and ICNIRP SAR recommendations rest solely on avoiding thermal effects on the adult male head under conditions of a six minute long call and do not take into account the long-term cell phone use, the length of calls, non-thermal biological effects, the smaller size and greater physiological vulnerability and increased absorption to the heads of children and females.

Published in the European Journal of Oncology, a study by the Ramazzini Institute: the National Institute for the Study and Control of Cancer and Environmental Diseases, Bologna, Italy 2010

Click the link below to view the full report in PDF

Ramazzini Institute – Interaction between Electromagnetic Fields and Living Matter



Some young scientists attending the Regional Science Fair at Trent University took on the controversial subject of Wi-Fi and Mobile Phone radiation.



Below are companies, to date, who are committed to protecting employee health and agree to:

  • Promote cell phone safety by distributing Environmental Health Trust information
  • Provide headsets to all employees who use phones for business
  • Sponsor Environmental Health Trust
  • Create their own programs to promote cell phone safety

Sustainable Mobile | info at sustainablemobile.com | +358-29-123 0899 | sustainablemobile.com
Knobe’s Radio Shack | chris at knobes.com | 307-734-8801 | knobes.com
Blue Spruce Cleaners | bluespucecleaners.com
Diana Joy AlterEgo | 307-690-3589
Dutton | A member of Penguin Group (USA) Inc | us.penguingroup.com
Dynamic Custom Homes | dchjk.com
Elevated Grounds Coffee Shop | elevatedgroundscoffeehouse.com
Horizon Pictures | 307-733-2994
Jackson Pediatricsjacksonpediatrics.net
Jackson Whole Grocerjacksonwholegrocer.com
JH Weekly | planetjh.com
Lotus Cafe | tetonlotuscafe.com
Mayor’s Office of Jackson Hole
Pamela Stockton Interiors | pamelastocktoninteriors.com
Roadrunner Apothecary
Sunlight Design | 307-690-6696 | sunlightstudio.com
Teton Literacy Program | tetonliteracy.com
Teton Science Schools | tetonscience.org
Teton Wellness Institutetetonwellness.org
Thal Glass Studiothalglass.com
Togwotee Lodge | togwoteelodge.com


Here is some information about how safe mobile phones are for children. More information, and some ways to reduce the risk, are available at our website: http://www.mobilewise.org/


But ongoing research showing a link between their use and health problems, coupled with differences in children’s anatomy, suggests they carry health risks for children.


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