Report of final results regarding brain and heart tumors in Sprague-Dawley rats exposed from prenatal life until natural death to mobile phone radiofrequency field representative of a 1.8 GHz GSM base station environmental emission

This Italian study on exposure to radiofrequency radiation and cancer in rats was started in 2005. It was a whole life-span study including 2448 animals. They were divided into 4 groups; 0 exposure (control group), 5 V/m, 25 V/m or 50 V/m. It has now been published and interestingly the results are similar as in the NTP study.

A statistically significant increase in the incidence of heart Schwannomas was observed in treated male rats at the highest dose (50 V/m). Furthermore, an increase in the incidence of heart Schwann cells hyperplasia was observed in treated male and female rats at the highest dose (50 V/m), although this was not statistically significant. An increase in the incidence of malignant glial tumors was observed in treated female rats at the highest dose (50 V/m), although not statistically significant.

The RI findings on far field exposure to RFR are consistent with and reinforce the results of the NTP study on near field exposure, as both reported an increase in the incidence of tumors of the brain and heart in RFR-exposed Sprague-Dawley rats. These tumors are of the same histotype of those observed in some epidemiological studies on cell phone users. These experimental studies provide sufficient evidence to call for the re-evaluation of IARC conclusions regarding the carcinogenic potential of RFR in humans.

Considering this study, the NTP study, increasing incidence of glioma, and human epidemiology studies showing increased risk for glioma and vestibular schwannoma (acoustic neuroma) for persons using wireless phones it is time for International Agency for Research on Cancer (IARC) to make a new risk assessment. The results indicate that radiofrequency radiation should be a Group 1 carcinogen to humans (sufficient evidence).


National Toxicology Program (NTP) Radiofrequency radiation carcinogenesis in rats (NTP TR 595) and mice (NTP TR 596)

This study is now under peer review during March 26 to 28, 2018; the reports can be found here (NTP TR 595; rats) and here (NTP TR 596; mice). It has been able to submit comments and our views can be found here.

Our overall evaluation of levels of evidence of carcinogenic activity are:

Glioma: Clear evidence
Meningioma: Equivocal evidence
Vestibular schwannoma (acoustic neuroma): Clear evidence
Pituitary tumor (adenoma): Equivocal evidence
Thyroid cancer: Some evidence
Malignant lymphoma: Equivocal evidence
Skin (cutaneous tissue): Equivocal evidence
Multi-site carcinogen: Some evidence

Based on the IARC preamble to the monographs, RF radiation should be classified as Group 1: The agent is carcinogenic to humans.

’This category is used when there is sufficient evidence of carcinogenicity in humans. Exceptionally, an agent may be placed in this category when evidence of carcinogenicity in humans is less than sufficient but there is sufficient evidence of carcinogenicity in experimental animals and strong evidence in exposed humans that the agent acts through a relevant mechanism of carcinogenicity.’ (

Increasing incidence of aggressive brain tumour (glioblastoma multiforme) in England during 1995-2015

A recent article describes increasing incidence of the most malignant type of brain tumor, glioblastoma multiforme (GBM) in England during 1995-2015. The number of patients increased from 2.4 to 5.0 per 100,000 during that time period. In total the yearly increase was from 983 to 2,531 patients, thus a substantial number. The incidence of low-grade glioma decreased but was stabilized from 2004, see figure 2. Thus the increasing incidence cannot be explained by low-grade glioma transforming to high-grade (GBM). The authors conclude that a general environmental factor must be the cause.

The increasing incidence is most pronounced for GBM in temporal or frontal parts of the brain, see figure 6. That is parts with highest exposure to radiofrequency radiation from the handheld wireless phone.

The increasing incidence of GBM was seen in all age groups but was most pronounced in those aged more than 55 years.

We published incidence data on brain tumours for the time period 1998-2015 based on the Swedish Cancer Register. In the age group 60-79 years the yearly incidence of high-grade glioma increased statistically significant in men with +1.68% (+0.39, +2.99 %) (n = 2,275) and in women with +1.38% (+0.32, +2.45%) (n = 1,585), see figures. Few patients were diagnosed in the age group 80+ yielding analysis less meaningful. High-grade glioma includes astrocytoma grades III and IV. Astrocytoma grade IV is the same as glioblastoma multiforme (GBM) with bad prognosis, survival about one year or less.

Our results are similar to those now published from England. All results are in agreement with wireless phones (mobile phones and cordless phones) causing glioma.








Increasing brain tumor rates in Sweden

Recently we published a new article on brain tumor rates in Sweden using the Inpatient Register for the time period 1998-2015. Also incidence data using the Swedish Cancer Register were analyzed for the same time period. The full article can be found here, see also abstract below.

We used the Swedish Inpatient Register (IPR) to analyze rates of brain tumors of unknown type (D43) during 1998-2015. Average Annual Percentage Change (AAPC) per 100,000 increased with +2.06%, 95% confidence interval (CI) +1.27, +2.86% in both genders combined. A joinpoint was found in 2007 with Annual Percentage Change (APC) 1998-2007 of +0.16%, 95% CI -0.94, +1.28%, and 2007-2015 of +4.24%, 95% CI +2.87, +5.63%. Highest AAPC was found in the age group 20-39 years. In the Swedish Cancer Register the age-standardized incidence rate per 100,000 increased for brain tumors, ICD-code 193.0, during 1998-2015 with AAPC in men +0.49%, 95% CI +0.05, +0.94%, and in women +0.33%, 95% CI -0.29, +0.45%. The cases with brain tumor of unknown type lack morphological examination. Brain tumor diagnosis was based on cytology/histopathology in 83% for men and in 87% for women in 1980 in the Cancer Register. This frequency increased to 90% in men and 88% in women in 2015. During the same time period CT and MRI imaging techniques were introduced and morphology is not always necessary for diagnosis. If all brain tumors based on clinical diagnosis with CT or MRI had been reported to the Cancer Register the frequency of diagnoses based on cytology/histology would have decreased in the register. The results indicate underreporting of brain tumor cases to the Cancer Register. The real incidence would be higher. Thus, incidence trends based on the Cancer Register should be used with caution. Use of wireless phones should be considered in relation to the change of incidence rates.

Maternal cell phone use during pregnancy and child behavioral problems in five birth cohorts

Previous studies have reported associations between prenatal cell phone use (exposure to radiofrequent fields) and child behavioral problems. In this study  data from 83,884 mother-child pairs in the five cohorts from Denmark (1996-2002), Korea (2006-2011), the Netherlands (2003-2004), Norway (2004-2008), and Spain (2003-2008) were analyzed. Cell phone use was grouped into none, low, medium, and high, based on frequency of calls during pregnancy reported by the mothers. Evidence for a trend of increasing risk of child behavioral problems through the maternal cell phone use categories was observed for hyperactivity/inattention problems; ADHD (OR for problems in the clinical range: 1.11, 95%CI 1.01, 1.22; 1.28, 95%CI 1.12, 1.48, among children of medium and high users, respectively). Thus, maternal cell phone use during pregnancy may be associated with an increased risk for behavioral problems, particularly hyperactivity/inattention problems, in the offspring. Increased risk was also found in the high cell phone use category for overall behavioral problems and emotional problems, although not statistically significant. The study can be found here.

In all analyses low cell phone use was used as the reference category. For no cell phone use decreased risk was found for all studied behavioral problems (overall problems, ADHD and emotional problems). It is unclear why low cell phone use instead of no cell phone use was used as the reference category. Using subjects that never used a cell phone would have given higher risk estimates in the high use category.

In the Dutch cohort cordless phone use was assessed yielding similar results as for cell phone use.

World Health Organization, radiofrequency radiation and health – a hard nut to crack (Review)

In a new article by Dr Lennart Hardell health effects from radiofrequency radiation, ICNIRP and the WHO agenda are discussed. The whole article can be found here, see also abstract below.

Abstract. In May 2011 the International Agency for Research on Cancer (IARC) evaluated cancer risks from radiofrequency (RF) radiation. Human epidemiological studies gave
evidence of increased risk for glioma and acoustic neuroma. RF radiation was classified as Group 2B, a possible human carcinogen. Further epidemiological, animal and mechanistic
studies have strengthened the association. In spite of this, in most countries little or nothing has been done to reduce exposure and educate people on health hazards from RF
radiation. On the contrary ambient levels have increased. In 2014 the WHO launched a draft of a Monograph on RF fields and health for public comments. It turned out that five
of the six members of the Core Group in charge of the draft are affiliated with International Commission on Non-Ionizing Radiation Protection (ICNIRP), an industry loyal NGO, and
thus have a serious conflict of interest. Just as by ICNIRP, evaluation of non-thermal biological effects from RF radiation are dismissed as scientific evidence of adverse health effects in the Monograph. This has provoked many comments sent to the WHO. However, at a meeting on March 3, 2017 at the WHO Geneva office it was stated that the WHO has no intention to change the Core Group.



Effects of Mobile Phones on Children’s and Adolescents’ Health: A Commentary

Effects of Mobile Phones on Children’s and Adolescents’ Health: A Commentary

Author: Lennart Hardell

In: Special Section of Child Development. Contemporary Mobile Technology and Child and Adolescent Development, edited by Zheng Yan and Lennart Hardell, May 15, 2017.


The use of digital technology has grown rapidly during the last couple of decades. During use, mobile phones and cordless phones emit radiofrequency (RF) radiation. No previous generation has been exposed during childhood and adolescence to this kind of radiation. The brain is the main target organ for RF emissions from the handheld wireless phone. An evaluation of the scientific evidence on the brain tumor risk was made in May 2011 by the International Agency for Research on Cancer at World Health Organization. The scientific panel reached the conclusion that RF radiation from devices that emit nonionizing RF radiation in the frequency range 30 kHz–300 GHz is a Group 2B, that is, a “possible” human carcinogen. With respect to health implications of digital (wireless) technologies, it is of importance that neurological diseases, physiological addiction, cognition, sleep, and behavioral problems are considered in addition to cancer. Well-being needs to be carefully evaluated as an effect of changed behavior in children and adolescents through their interactions with modern digital technologies.


In spite of the IARC evaluation little has happened to reduce exposure to RF fields in most countries. The exposure guideline used by many agencies was established in 1998 by the International Commission on Non-Ionizing Radiation Protection (ICNIRP) and was based on thermal (heating) effects from RF radiation neglecting non-thermal biological effects. It was updated in 2009 and still gives the guideline 2 to 10 W/m2 for RF radiation depending on frequency.

In contrast to ICNIRP the BioInitiative Report from 2007, updated in 2012, based the evaluation also on non-thermal health effects from RF radiation. The scientific benchmark for possible health risks was defined to be 30 to 60 µW/m2.  Thus, using the significantly higher guideline by ICNIRP gives a ‘green card’ to roll out the digital technology thereby not considering non-thermal health effects from RF radiation. Numerous health hazards are disregarded such as cancer, neurological diseases, psychological addiction, cognition, sleep and behavioral problems.

For obvious reasons the extent and severity of long-term health effects among children and adolescents using this technology are not know. However, there are already numerous peer-reviewed studies showing health hazards from wireless devices. Urgent action using the precautionary principle is needed.