Scientific & policy developments regarding the biological & health effects of electromagnetic radiation from cell phones, cell towers, Wi-Fi, Smart Meters, electric vehicles & other wireless technology, including 5G. Website curated by Joel Moskowitz, PhD, Director, Center for Family & Community Health, UC Berkeley School of Public Health.
This week on Green Street, Patti and Doug Wood talk with Dr. Joel Moskowitz, Director of the Center for Family and Community Health at the School of Public Health at UC Berkeley, about the growing body of science regarding the biological impacts of wireless radiation and its effect on human health.
The program aired on WBAI-FM in New York City, KPFA-FM in Berkeley and KPFK in Los Angeles during the first week of November 2024.
Gautam R, Arora T. Radio Frequency Electromagnetic Radiation (RF-EMR) Emitted from Mobile Phone and its Impact on Male Reproductive Health. EIACP: Diversity and Impact on the Environment. 28(3):8-11. 2023.
Diagram representing various sources of RF EMF exposure effect on brain and testicular organ and deleterious outcomes (Kesari, Agarwal & Henkel, 2018)
Review Papers
Detrimental
impact of cell phone radiation on sperm DNA integrity
Koohestanidehaghi Y, Khalili MA, Dehghanpour F, Seify M. Detrimental impact of cell phone radiation on sperm DNA integrity. Clin Exp Reprod Med. 2024 Jan 24. doi: 10.5653/cerm.2023.06121.
Abstract
Radiofrequency electromagnetic radiation (RF-EMR) from various sources may impact health due to the generation of frequency bands. Broad pulses emitted within frequency bands can be absorbed by cells, influencing their function. Numerous laboratory studies have demonstrated that mobile phones-generally the most widely used devices-can have harmful effects on sex cells, such as sperm and oocytes, by producing RF-EMR. Moreover, some research has indicated that RF-EMR generated by mobile phones can influence sperm parameters, including motility, morphology, viability, and (most critically) DNA structure. Consequently, RF-EMR can disrupt both sperm function and fertilization. However, other studies have reported that exposure of spermatozoa to RF-EMR does not affect the functional parameters or genetic structure of sperm. These conflicting results likely stem from differences among studies in the duration and exposure distance, as well as the species of animal used. This report was undertaken to review the existing research discussing the effects of RF-EMR on the DNA integrity of mammalian spermatozoa.
EMW can induce oxidative stress, which subsequently leads to disorders such as reduced mobility, morphological changes, acrosome disturbances, and ultimately, damage to the nucleus and genetic material. This oxidative damage to DNA can result in the breakdown of both single-stranded and double-stranded DNA structures, culminating in fragmentation. If the DNA is not repaired and the damage accumulates, the sperm may undergo apoptosis. Damage to the sperm genome can ultimately impact fertility, potentially leading to infertility. Therefore, it is advisable to limit daily exposure to these sources to prevent irreversible damage caused by EMWs. Many men carry their cell phones in their trouser pockets or clipped to their belts, and the use of Bluetooth can increase their susceptibility to RF-EMR exposure. This exposure can induce changes in sperm quality through oxidative stress, potentially leading to infertility. Agarwal et al. [11] suggested that carrying a cell phone in a pocket could lead to a decline in sperm quality. However, it is important to note that the phone and male reproductive organs are separated by multiple tissue layers. Therefore, extrapolating these in vitro effects to real-life conditions requires further studies [11].
In July 2021, the European Parliament commissioned a research report titled “Health impact of 5G.” The report concluded that the commonly used RF-EMFs are likely carcinogenic to humans and have a definitive impact on male fertility. It also suggested potential adverse effects on the development of embryos, fetuses, and newborns. To mitigate these adverse effects, the organization proposed several strategies. These include favoring non-wireless connections, increasing distance from the source of RF-EMFs, switching off devices when not in use, and practicing safe phone usage [55].
Genotoxic Risks to Male Reproductive Health from Radiofrequency Radiation
Kaur P, Rai U, Singh R. Genotoxic Risks to Male Reproductive Health from Radiofrequency Radiation. Cells. 2023; 12(4):594. https://doi.org/10.3390/cells12040594.
Abstract
During modern era, mobile phones, televisions, microwaves, radio, and wireless devices, etc., have become an integral part of our daily lifestyle. All these technologies employ radiofrequency (RF) waves and everyone is exposed to them, since they are widespread in the environment. The increasing risk of male infertility is a growing concern to the human population. Excessive and long-term exposure to non-ionizing radiation may cause genetic health effects on the male reproductive system which could be a primitive factor to induce cancer risk. With respect to the concerned aspect, many possible RFR induced genotoxic studies have been reported; however, reports are very contradictory and showed the possible effect on humans and animals. Thus, the present review is focusing on the genomic impact of the radiofrequency electromagnetic field (RF-EMF) underlying the male infertility issue. In this review, both in vitro and in vivo studies have been incorporated explaining the role of RFR on the male reproductive system. It includes RFR induced-DNA damage, micronuclei formation, chromosomal aberrations, SCE generation, etc. In addition, attention has also been paid to the ROS generation after radiofrequency radiation exposure showing a rise in oxidative stress, base adduct formation, sperm head DNA damage, or cross-linking problems between DNA & protein.
Conclusions
The present review reveals a better understanding of the genotoxic effects of radiofrequency radiation on male reproductive health emitted from mobile phones, laptops, microwaves, wireless networks, etc. The study focused on different endpoints such as DNA damage, micronuclei formation and genomic instability, SCE & chromosomal aberrations covering both in vitro and in vivo parameters. The available information following in vitro and in vivo exposure shows that all the yielded data has both positive and negative results. In this review, studies reported DNA fragmentation, apoptosis, and elevated protein expression in both human and animal spermatozoa, concluding a decrease in viability, mitochondrial genomic destruction and DNA strand breaks. Further micronuclei formation, SCE and chromosomal aberrations are also found to cause abnormalities, leading to the accumulation of mutations and hence causing cancer risk. While controversial investigation, on the other hand, supported with no effect on cellular apoptosis or DNA integrity. Our present study reviewed that RFR has insufficient energy production to generate genomic damage. Yet, such effects were probably found to be responsible for male infertility due to the indirect mechanism of oxidative stress via ROS generation in the exposed system. Few studies also suggested that the damage due to the cumulative effect of repeated exposure varies with physical parameters such as distance from the radiation source, short-term or long-term exposure duration, penetration depth, and frequency of exposure. Therefore, considering all data together, the present review supports the capability of radiofrequency radiation to induce genotoxicity underlying male infertility keeping some limitations in mind, since the report is a conclusion of narrative study and limited literature were found explaining the actual mechanism of micronuclei formation, sister chromatid exchange, chromosomal aberration and genomic instability. Hence, more studies are needed to elucidate the DNA damage mechanism with more robust study designs favoring potential genotoxic effects of RFR on male reproductive health.
Pusan National University scientists reveal links between sperm quality and cell phone use
The findings of their updated meta-analysis hint at the potential dangers of modern electronic gadgets
Pusan National University, News Release
image: After examining a series of studies from 2012 to 2021, researchers have performed an updated meta-analysis that clearly indicates the connection between cell phone and decreased sperm quality.view more
Credit: Pusan National University
Cell phones have succeeded in bringing the world closer, making life tolerable during a very trying time. But cellphones also have their downsides. They can have negative effects on health. This is because cell phones emit radiofrequency electromagnetic waves (RF-EMWs), which are absorbed by the body. According to a meta-analysis from 2011, data from previous studies indicate that RF-EMWs emitted by cell phones degrade sperm quality by reducing their motility, viability, and concentration. However, this meta-analysis had a few limitations, as it had low amounts of in vivo data and considered cell phone models that are now outdated.
In an effort to bring more up-to-date results to the table, a team of researchers led by Assistant Professor Yun Hak Kim from Pusan National University, Korea, conducted a new meta-analysis on the potential effects of cell phones on sperm quality. They screened 435 studies and records published between 2012 and 2021 and found 18—covering a total of 4280 samples—that were suitable for the statistical analyses. Their paper was made available online on July 30, 2021 and was published in Volume 202 of Environmental Research in November, 2021.
Overall, the results indicate that cell phone use is indeed associated with reduced sperm motility, viability, and concentration. These findings are more refined than those from the previous meta-analysis thanks to a better subgroup analysis of the data. Another important aspect that the researchers looked into was if higher exposure time to cell phones was correlated to lower sperm quality. However, they found out that the decrease in sperm quality was not significantly related to exposure time—just to exposure to mobile phones itself. Considering the results were consistent across both in vivo and in vitro (cultured sperm) data, Dr. Kim warns that “Male cell-phone users should strive to reduce mobile phone use to protect their sperm quality.”
Knowing that the number of cell phone users is most likely going to increase in the future, it’s high time we start considering exposure to RF-EMW as one of the underlying factors causing a reduction in sperm quality among the male population. Moreover, seeing how technologies evolve so quickly, Dr. Kim remarks that “additional studies will be needed to determine the effect of exposure to EMWs emitted from new mobile phone models in the present digital environment.” The bottom line is, if you’re worried about your fertility (and potentially other aspects of your health), it may be a good idea to limit your daily cell phone use.
Effects of mobile phone usage on sperm quality – No time-dependent relationship on usage: A systematic review and updated meta-analysis
Sungjoon Kim, Donghyun Han, Jiwoo Ryu, Kihun Kim, Yun Hak Kim. Effects of mobile phone usage on sperm quality – No time-dependent relationship on usage: A systematic review and updated meta-analysis. Environmental Research. 202:111784, 2021. doi:10.1016/j.envres.2021.111784.
Abstract
Background Mobile phones emit radiofrequency (RF) electromagnetic waves (EMWs), a low-level RF that can be absorbed by the human body and exert potential adverse effects on the brain, heart, endocrine system, and reproductive function. Owing to the novel findings of numerous studies published since 2012 regarding the effect of mobile phone use on sperm quality, we conducted a systematic review and updated meta-analysis to determine whether the exposure to RF-EMWs affects human sperm quality.
Methods This study was conducted in accordance with the PRISMA guidelines. The outcome measures depicting sperm quality were motility, viability, and concentration, which are the most frequently used parameters in clinical settings to assess fertility.
Results We evaluated 18 studies that included 4280 samples. Exposure to mobile phones is associated with reduced sperm motility, viability, and concentration. The decrease in sperm quality after RF-EMW exposure was not significant, even when the mobile phone usage increased. This finding was consistent across experimental in vitro and observational in vivo studies.
Discussion Accumulated data from in vivo studies show that mobile phone usage is harmful to sperm quality. Additional studies are needed to determine the effect of the exposure to EMWs from new mobile phone models used in the present digital environment.
Excerpts
"... 18 studies fulfilled all inclusion criteria and were included in the meta-analysis (Table 1 and Fig. 1) (Agarwal et al., 2008, 2009; Ahmad and Baig, 2011; Al-Bayyari, 2017b; De Iuliis et al., 2009; Ding et al., 2018a; Dkhil et al., 2011; Erogul et al., 2006; Falzone et al., 2008; Fejes et al., 2005; Kaya et al., 2020; Malini, 2017b; Rago et al., 2013; Sajeda and Al-Watter, 2011; Veerachari and Vasan, 2012; Wdowiak et al., 2018; Yildirim et al., 2015; Zalata et al., 2015). Nine studies from a previous meta-analysis and nine new studies that included 4280 samples were used for analysis. One conference paper included in the previous study was excluded. The sperm quality parameters established in each paper varied and were subjected to a meta-analysis; 16 papers provided data on sperm motility, 6 provided data on sperm viability, and 12 provided data on sperm concentration. All in vitro studies were experimental, whereas all in vivo studies were observational. We identified the MD values of the entire 4280 samples and analyzed the MD values of each group after classifying them according to four criteria: control group setting (non-exposure vs. less exposure), study design (in vivo and in vitro), participant group (fertility clinic and population), and storage location (trousers or not)."
Conclusion
"Mobile phone use decreased the overall sperm quality by affecting the motility, viability, and concentration. It was further reduced in the group with high mobile phone usage. In particular, the decrease was remarkable in in vivo studies with stronger clinical significance in subgroup analysis. Therefore, long-term cell phone use is a factor that must be considered as a cause of sperm quality reduction. Additional studies are needed to determine the effect of the exposure to EMWs emitted from new mobile phone models in the present digital environment."
Romualdo Sciorio, Luca Tramontano, Sandro C Esteves. Effects of mobile phone radiofrequency radiation on sperm quality. Zygote. 2021 Aug 13;1-10. doi: 10.1017/S096719942100037X
Abstract
In the last decades, the universal use of mobile phones has contributed to radiofrequency electromagnetic radiation environmental pollution. The steady growth in mobile phone usage has raised concerns about the effects of phone radiation on male reproductive health. Epidemiological studies report a sharp decline in sperm counts in developing countries, and worldwide with c. 14% of couples having difficulties to conceive, many of which are attributed to a male infertility factor. Environment and lifestyle factors are known to contribute to male infertility. Exposure to heat, radiation, or radioactivity might induce damage to biological tissue organs, including the testis. Given the ubiquitous use of mobile phones, the potential adverse effects of the resulting environmental radiation needs to be elucidated further. It seems to be an apparent relationship between the increased exposure to mobile phone radiofrequency and sperm quality decline, but the evidence is not conclusive. Our review summarizes the evidence concerning the possible adverse effects of cell phone radiation on the male reproductive system, with a focus on sperm quality. Also, we critically analyze the effects of elevated testicular temperature and oxidative stress on male fertility and how these factors could interfere with the physiological activities of the testis.
The rapid technological advances in personal computers and communication devices might pose a risk for human health. Cell phone devices emit radiofrequency electromagnetic waves that seem to affect male reproductive health and other body functions (McClelland 3rd and Jaboin, 2018; Sage and Burgio, 2018; Wall et al., 2019). Although the current data are not unequivocal, it seems sound to speculate that mobile phone exposure might be contributing to subfertility. However, the existing evidence primarily relates to adverse effects on sperm motility and morphology, which are limited endpoints for evaluating the male fertility potential.
The exact mechanisms of how RF-EMR might affect the testis, epididymis, and sperm have not yet been fully understood. Additional studies are warranted, particularly prospective studies assessing sperm functional markers, such as sperm DNA integrity and OS, in fertile and subfertile men. Equally important will be to analyze whether the decreased sperm quality associated with mobile phone exposure translates into impaired pregnancy chances. The effects of short-term and long-term exposure and energy intensity should be also investigated in more detail, taking into account relevant confounders. Only then will scientific societies and regulatory bodies be able to provide users with transparent information concerning the risks and guidance for proper use.
--
Gang Yu, Zhiming Bai, Song Chao, Qing Cheng, Gang Wang, Zeping Tang, Sixing Yang. Current progress on the effect of mobile phone radiation on sperm quality: an updated systematic review and meta-analysis of human and animal studies. Environmental Pollution. Published online: 30 March 2021. https://doi.org/10.1016/j.envpol.2021.116952.
Highlights
• Mobile phone use was related to sperm quality decline of men in some areas. • Mobile phone RF-EMR directly impaired mature sperm of men in vitro. • Mobile phone RF-EMR affected some parameters of sperm quality in experiment animals. • Experiment conditions affected pooled results of animal experiments. • More studies should be conducted to investigate this issue in new era.
Abstract
Potential suppression of fertility due to mobile phone radiation remains a focus of researchers. We conducted meta-analyses on the effects of mobile phone radiation on sperm quality using recent evidence and propose some perspectives on this issue. Using the MEDLINE/PubMed, Embase, WOS, CENTRAL, and ClinicalTrials.gov databases, we retrieved and screened studies published before December 2020 on the effects of mobile phone use/mobile phone RF-EMR on sperm quality.
Thirty-nine studies were included. Data quality and general information of the studies were evaluated and recorded. Sperm quality data (density, motility, viability, morphology, and DFI) were compiled for further analyses, and we conducted subgroup, sensitivity, and publication bias analyses.
The pooled results of human cross-sectional studies did not support an association of mobile phone use and a decline in sperm quality. Different study areas contributed to the heterogeneity of the studies. In East Europe and West Asia, mobile phone use was correlated with a decline in sperm density and motility. Mobile phone RF-EMR exposure could decrease the motility and viability of mature human sperm in vitro.
The pooled results of animal studies showed that mobile phone RF-EMR exposure could suppress sperm motility and viability. Furthermore, it reduced sperm density in mice, in rats older than 10 weeks, and in rats restrained during exposure. Differences regarding age, modeling method, exposure device, and exposure time contributed to the heterogeneity of animal studies. Previous studies have extensively investigated and demonstrated the adverse effects of mobile phone radiation on sperm.
In the future, new standardized criteria should be applied to evaluate potential effects of mobile phone RF-EMR dosages. Further sperm-related parameters at the functional and molecular levels as well as changes in biological characteristics of germ cells should be evaluated. Moreover, the impact of mobile phone RF-EMR on individual organs should also be examined.
Conclusion
The
results of our meta-analysis indicated that in East Europe and West
Asia, mobile phone use is associated with a decline in human sperm
density and motility. Mobile phone RF-EMR can reduce motility and
viability of mature human sperm in vitro, and it can also
reduce sperm motility and viability in male animals and decrease sperm
density of sexually mature restrained rats. Some important factors that
affect the results of animal experiments are study setup and radiation
device as well as age and exposure time. Our study is an extension of
previous studies and has scientific value for future studies on effects
of mobile phone RF-EMR associated with sperm quality.
Pooja Negi, Rajeev Singh.
Association between reproductive health and nonionizing radiation exposure.
Electromagnetic Biology and Medicine. Published online: 20 Jan 2021. DOI: 10.1080/15368378.2021.1874973.
Abstract
Recently,
a decreasing rate of fertility has to be credited to an array of
factors such as environmental, health and lifestyle. Male infertility is
likely to be affected by the strong exposure to heat and radiations.
The most common sources of nonionizing radiations are cell phones,
laptops, Wi-Fi and microwave ovens, which may participate to the cause
of male infertility. One of the major sources of daily exposure to
non-ionizing radiation is mobile phones. A mobile phone is now basically
dominating our daily life through better services such as connectivity,
smartphone devices. However, the health consequences are linked with
their usage are frequently ignored. Constant exposure to non-ionizing
radiations produced from a cell phone is one of the possible reasons for
growing male infertility. Recently, several studies have shown that
cell phone users have altered sperm parameters causing declining
reproductive health. Cell phone radiation harms male fertility by
affecting the different parameters like sperm motility, sperm count,
sperm morphology, semen concentration, morphometric abnormalities,
increased oxidative stress along with some hormonal changes. This review
is focusing on the prevailing literature from in vitro and in vivo
studies suggesting that non-ionizing exposure negatively affects human
male infertility.
Negi & Singh, 2021
Conclusion
Generally,
the outcome of the studies has indicated that mobile phone usage
changes different sperm parameters in both ways in-vitro (human) and
in-vivo (animals). Several studies disclose that the exposure to cell
phones produces harmful effects on the testes, which may affect sperm
motility, sperm number, sperm concentration, and morphology and an
increased DNA damage, causing micronuclei formation and reactive oxygen
species within the cell. So many evidences showed that exposure from
cell phones results in elevated oxidative stress with disintegrated DNA
and it is directly and indirectly dependent on the time of cell phone
use. Further researches are required to provide strong evidence that the
use of mobile phones may disturb sperm and testicular activity. Several
evidences suggest that the irregularities reported due to
RF-EMF-exposure depend on physical parameters such as utilized RF
wavelength, penetration range into the object, and transmission length
of the radiation. Unfortunately, existing studies are not able to
suggest a true mechanism between the harmful effects of RF-EMF radiation
and the male reproductive system. To conclude all of the above,
government bodies and agencies should form strong guidelines against
cell phone exposure and take preventive actions such as in the usage of
mobile phones, preventing chatting, reducing the overall contact time,
and holding the gadget away from the groin may be of significant help to
people pursuing fertility. Moreover, very limited studies are available
on protective actions so far so a large-scale analysis is also required
to determine the reproductive parameters.
Chidiebere Emmanuel Okechukwu.
Does the Use of Mobile Phone Affect Male Fertility? A Mini-Review.
J Hum Reprod Sci. Jul-Sep 2020;13(3):174-183. doi: 10.4103/jhrs.JHRS_126_19.
Abstract
Presently, there is a rise in the use of mobile phones, laptops, and wireless internet technologies such as Wi-Fi and 5G routers/modems across the globe; these devices emit a considerable amount of electromagnetic radiation (EMR) which could interact with the male reproductive system either by thermal or nonthermal mechanisms. The aim of this review was to examine the effects of mobile phone use on male fertility. Related studies that reported on the effects of EMR from mobile phones on male fertility from 2003 to 2020 were evaluated. PubMed database was used. The Medical Subject Heading system was used to extract relevant research studies from PubMed. Based on the outcomes of both human and animal studies analyzed in this review, animal and human spermatozoa exposed to EMR emitted by mobile phones had reduced motility, structural anomalies, and increased oxidative stress due to overproduction of reactive oxygen species. Scrotal hyperthermia and increased oxidative stress might be the key mechanisms through which EMR affects male fertility. However, these negative effects appear to be associated with the duration of mobile phone use.
Conclusion
Based
on the outcomes of both human and animal studies examined in this
review, animal and human spermatozoa exposed to EMR emitted by mobile
phones had reduced motility, structural anomalies, and increased
oxidative stress due to the production of ROS. Scrotal hyperthermia and
increased oxidative stress might be the key mechanisms by which EMR
affects male fertility. However, these negative effects appear to be
associated with the duration of mobile phone use.
Jaffar FHF, Osman K, Ismail NH, Chin KY, Ibrahim SF.
Adverse Effects of Wi-Fi Radiation on Male Reproductive System: A Systematic Review.
Tohoku J Exp Med. 2019;248(3): 169-179. doi: 10.1620/tjem.248.169. (Note: Smartphones emit Wi-Fi, Bluetooth and various types of cellular radiation.)
Abstract
Extensive use of Wi-Fi has contributed to
radiofrequency electromagnetic radiation (RF-EMR) pollution in
environment. Various studies have been conducted to evaluate the effect
of RF-EMR emitted by Wi-Fi transmitter on male reproduction health.
However, there are conflicting findings between studies. Thus, this
review aims to elucidate the possible effects of 2.45 GHz Wi-Fi exposure
on both animal and human male reproductive system. A computerized
database search performed through MEDLINE via Ovid and PUBMED with the
following set of keywords: 'Wi-Fi or WiFi or wireless fidelity or Wi-Fi
router or WiFi router or electromagnetic or radiofrequency radiation'
AND 'sperm or spermatozoa or spermatogenesis or semen or seminal plasma
or testes or testis or testosterone or male reproduction' had returned
526 articles. Only 17 studies conformed to pre-set inclusion criterion.
Additional records identified through Google Scholar and reviewed
article further revealed six eligible articles. A total of 23 articles
were used for data extraction, including 15 studies on rats, three
studies on mice, and five studies on human health. Sperm count, motility
and DNA integrity were the most affected parameters when exposed to
RF-EMR emitted by Wi-Fi transmitter. Unfortunately, sperm viability and
morphology were inconclusive. Structural and/or physiological analyses
of the testes showed degenerative changes, reduced testosterone level,
increased apoptotic cells, and DNA damage. These effects were mainly due
to the elevation of testicular temperature and oxidative stress
activity. In conclusion, exposure towards 2.45 GHz RF-EMR emitted by
Wi-Fi transmitter is hazardous on the male reproductive system.
Kesari KK, Agarwal A, Henkel R.
Radiation and male fertility.
Reprod Biol Endocrinol. 2018 Dec 9;16(1):118. doi: 10.1186/s12958-018-0431-1.
Abstract
During
recent years, an increasing percentage of male infertility has to be
attributed to an array of environmental, health and lifestyle factors.
Male infertility is likely to be affected by the intense exposure to
heat and extreme exposure to pesticides, radiation, radioactivity and
other hazardous substances. We are surrounded by several types of
ionizing and non-ionizing radiations and both have recognized causative
effects on spermatogenesis. Since it is impossible to cover all types of
radiation sources and their biological effects under a single title,
this review is focusing on radiation deriving from cell phones, laptops,
Wi-Fi and microwave ovens, as these are the most common sources of
non-ionizing radiation, which may contribute to the cause of
infertility by exploring the effect of exposure to radiofrequency
radiation on the male fertility pattern. From currently available
studies it is clear that radiofrequency electromagnetic fields (RF-EMF)
have deleterious effects on sperm parameters (like sperm count,
morphology, motility), affects the role of kinases in cellular
metabolism and the endocrine system, and produces genotoxicity, genomic
instability and oxidative stress. This is followed with protective
measures for these radiations and future recommendations. The study
concludes that the RF-EMF may induce oxidative stress with an increased
level of reactive oxygen species, which may lead to infertility. This
has been concluded based on available evidence from in vitro and in
vivo studies suggesting that RF-EMF exposure negatively affects sperm
quality.
Ford-Glanton BS, Melendez DA. Male reproductive toxicants:
Electromagnetic radiation and heat. Reference Module in Biomedical Sciences, 2018.
Abstract
Human population in today's world lives surrounded by
radiofrequency fields (RF) and electromagnetic radiation (EM) fields,
transmitting almost all forms of electronic communication and data that humans
produce every second. Mobile devices and laptop computers are EMR-emitting
devices. The effect of mobile phone emitted radiation and heat on fertility is
the subject of recent interest and investigations. Many studies have found a
decrease in semen quality which has increased the focus on male reproductive
health. Infertility affects approximately 15% of couples of reproductive age,
and nearly half of these cases are linked to male fertility (Sharlip et al.,
2002). Different harmful environmental influences have led to changes in semen
analysis standards by reducing the lower limits of normal ranges, which were
declared by the World Health Organization (2010). The possible negative impact
of mobile phone radiation on sperm quality has been well established. While no
certain conclusions can be drawn from current evidence, a growing number of
studies indicate a decrease in male fertility associated with increased
cellular phone usage (Agarwal et al., 2011) and laptop computers using Wi-Fi
(Avendaño et al., 2012a). Here we review the current evidence regarding the
effects of electromagnetic radiation and heat in male fertility.
-- Yahyazadeh
A, Deniz OG, Kaplan AA, Altun G, Yurt KK, Davis D. The genomic effects
of cell phone exposure on the reproductive system. Environ Res. 2018 Nov;167:684-693. doi: 10.1016/j.envres.2018.05.017.
Abstract
Humans
are exposed to increasing levels of electromagnetic fields (EMF) at
various frequencies as technology advances. In this context, improving
understanding of the biological effects of EMF remains an important,
high priority issue. Although a number of studies in this issue and
elsewhere have focused on the mechanisms of the oxidative stress caused
by EMF, the precise understanding of the processes involved remains to
be elucidated. Due to unclear results among the studies, the issue of
EMF exposure in the literature should be evaluated at the genomic level
on the reproductive system. Based on this requirement, a detail review
of recently published studies is necessary. The main objectives of this
study are to show differences between negative and positive effect of
EMF on the reproductive system of animal and human. Extensive review of
literature has been made based on well known data bases like Web of
Science, PubMed, MEDLINE, Google Scholar, Science Direct, Scopus. This
paper reviews the current literature and is intended to contribute to a
better understanding of the genotoxic effects of EMF emitted from mobile
phones and wireless systems on the human reproductive system,
especially on fertility. The current literature reveals that mobile
phones can affect cellular functions via non-thermal effects. Although
the cellular targets of global system for mobile communications
(GSM)-modulated EMF are associated with the cell membrane, the subject
is still controversial. Studies regarding the genotoxic effects of EMF
have generally focused on DNA damage. Possible mechanisms are related to
ROS formation due to oxidative stress. EMF increases ROS production by
enhancing the activity of nicotinamide adenine dinucleotide (NADH)
oxidase in the cell membrane. Further detailed studies are needed to
elucidate DNA damage mechanisms and apoptotic pathways during oogenesis
and spermatogenesis in germ cells exposed to EMF.
Conclusion
This
paper reviews the current literature and is intended to contribute to a
better understanding of the genotoxic effects of EMF emitted from
mobile phones and wireless systems on the human reproductive system,
especially on fertility. The current literature reveals that mobile
phones can affect cellular functions via non-thermal effects (Diem et
al., 2005; Hanci et al., 2013 ; Odaci et al., 2016a). Although the
cellular targets of GSM-modulated EMF are associated with the cell
membrane, the subject is still controversial (Eberhardt et al., 2008).
Studies regarding the genotoxic effects of EMF have generally focused on
DNA damage (Mortelmans and Rupa, 2004; Young, 2002; Zeiger, 2004;
Panagopoulos, 2012 ; Turedi et al., 2016). Possible mechanisms are
related to ROS formation due to oxidative stress (Moustafa et al., 2004;
Hanukoglu et al., 2006). EMF increases ROS production by enhancing the
activity of NADH oxidase in the cell membrane (Friedman et al., 2007b).
In this context, EMF affected spermatozoa may have a high degree rate of
infertilization. It seems that previous genomic studies do not show
definitive evidence regarding EMF affected cells in the fertilization.
Although we evaluated broadly the genomic effects of cell phone exposure
on the reproductive system using both animal and human studies, one of
the weaknesses of this work is insufficient review of human studies.
This may come from limited number of EMF based human studies in the
literature. Further detailed studies are needed to elucidate DNA damage
mechanisms and apoptotic pathways during oogenesis and spermatogenesis
in germ cells that are exposed to EMF. https://www.ncbi.nlm.nih.gov/pubmed/29884549
--
Altun G, Deniz OG, Yurt KK, Davis D, Kaplan S. Effects of mobile phoneexposure on metabolomics in the male and female reproductive systems. Environ Res. 2018 Nov;167:700-707. doi: 10.1016/j.envres.2018.02.031.
Highlights
• Long-term exposure to EMF decreases sperm motility and fertilization.
• Effects of EMF emitted from mobile phones are related to protein synthesis. • Oxidative stress based EMF exposure modulates nitric oxide level in the germ cells. • Oxidative stress based EMF exposure inhibits antioxidant mechanisms in the germ cells.
Abstract
With
current advances in technology, a number of epidemiological and
experimental studies have reported a broad range of adverse effects of
electromagnetic fields (EMF) on human health. Multiple cellular
mechanisms have been proposed as direct causes or contributors to these
biological effects. EMF-induced alterations in cellular levels can
activate voltage-gated calcium channels and lead to the formation of
free radicals, protein misfolding and DNA damage. Because rapidly
dividing germ cells go through meiosis and mitosis, they are more
sensitive to EMF in contrast to other slower-growing cell types. In this
review, possible mechanistic pathways of the effects of EMF exposure on
fertilization, oogenesis and spermatogenesis are discussed. In
addition, the present review also evaluates metabolomic effects of
GSM-modulated EMFs on the male and female reproductive systems in recent
human and animal studies. In this context, experimental and
epidemiological studies which examine the impact of mobile phone
radiation on the processes of oogenesis and spermatogenesis are examined
in line with current approaches.
Conclusion
EMF emitted
by mobile phones has a number of well-documented adverse metabolomic
effects on the male and female reproductive systems and can lead to
infertility by increasing ROS production and reducing GSH and other
antioxidants. The primary target of the EMF emitted by mobile phones may
be the cell membrane (Pall in press, this volume). This then results in
accelerated activity of membrane NADH oxidase and, consequently,
greater rates of ROS formation that cannot be easily conjugated or
detoxified. Although many studies have reported morphological and
functional deteriorations in testis and ovary following EMF exposures,
as well both structural and functional deficits in reproductive health,
the underlying mechanisms have not been fully elucidated. To assist in
further clarification of these processes and mechanisms, Table 1
summarizes key studies on the metabolomic effects of EMF on reproductive
systems. Future studies will benefit greatly from standardized exposure
protocols and evaluations of key metabolomic indicators.
-- Sepehrimanesh,
M. & Davis, D.L. Proteomic impacts of electromagnetic fields on the
male reproductive system. Comp Clin Pathol. 26(2):309-313. 2017. doi:10.1007/s00580-016-2342-x.
Abstract
The use of mobile phones and other wireless transmitting devices is
increasing dramatically in developing and developed countries, as is the
rate of infertility. A number of respected infertility clinics in
Australia, India, USA, and Iran are reporting that those who regularly
use mobile phones tend to have reduced sperm quantity and quality. Some
experimental studies have found that human sperm exposed to
electromagnetic fields (EMF), either simulated or from mobile phones,
developed biomarkers of impaired structure and function, as well as
reduced quantity. These encompass pathological, endocrine, and proteomic
changes. Proteins perform a vast array of functions within living
organisms, and the proteome is the entire array of proteins—the ultimate
biomolecules in the pathways of DNA transcription to translation.
Proteomics is the art and science of studying all proteins in cells,
using different techniques. This paper reviews proteomic experimental
and clinical evidence that EMF acts as a male-mediated teratogen and
contributor to infertility.
Conclusions As among the most rapidly proliferating human cells, spermatogenesis and
associated activities offer an important endpoint for evaluation. More
than 60 different compounds or industrial processes have been identified
as increasing defects in human sperm or testicular tissue and possibly
increasing the risk to offspring from male-mediated exposures. In this
study, we reviewed structural and functional proteomic changes related to
EMF exposure. Reported changes are categorized based on main affected
tissue and also the most important adverse effects. Overall, these
results demonstrate significant effects of radio frequency-modulated EMF
exposure on the proteome, including both structural and functional
impacts such as a decrease in the diameter and weight of the
seminiferous tubules and the mean height of the germinal epithelium
(Ozguner et al. 2005) and/or pathological and physiological changes in
key biochemical components of the testicular tissues (Luo et al. 2013).
These structural and functional changes may account for the pathological
impact of EMF on the male reproductive system reported in the
experimental work that we and others have conducted. While EMF is
currently being used for a number of therapeutic applications (REF), the
work we have reviewed here clearly indicates a range of harmful
effects, especially on genital systems. https://link.springer.com/article/10.1007/s00580-016-2342-x
-- Houston B, Nixon B, King BV, De Iuliis G, Aitken RJ. The effects of radiofrequency electromagnetic radiation on sperm function. Reproduction. 2016 Dec;152(6):R263-R276. Abstract
Mobile phone usage has become an integral part of our lives. However, the effects of the radiofrequency electromagnetic radiation (RF-EMR) emitted by these devices on biological systems and specifically the reproductive systems are currently under active debate. A fundamental hindrance to the current debate is that there is no clear mechanism of how such non-ionising radiation influences biological systems. Therefore, we explored the documented impacts of RF-EMR on the male reproductive system and considered any common observations that could provide insights on a potential mechanism.
Among a total of 27 studies investigating the effects of RF-EMR on the male reproductive system, negative consequences of exposure were reported in 21. Within these 21 studies, 11 of the 15 that investigated sperm motility reported significant declines, 7 of 7 that measured the production of reactive oxygen species documented elevated levels and 4 of 5 studies that probed for DNA damage highlighted increased damage, due to RF-EMR exposure. Associated with this, RF-EMR treatment reduced antioxidant levels in 6 of 6 studies that studied this phenomenon, while consequences of RF-EMR were successfully ameliorated with the supplementation of antioxidants in all 3 studies that carried out these experiments.
In light of this, we envisage a two-step mechanism whereby RF-EMR is able to induce mitochondrial dysfunction leading to elevated ROS production.
A continued focus on research which aims to shed light on the biological effects of RF-EMR will allow us to test and assess this proposed mechanism in a variety of cell types.
To date, contradictory studies
surrounding the impacts of RF-EMR on biological systems maintain controversy
over this subject. Nevertheless, research into the biological responses
stimulated by RF-EMR is particularly important given our ever-increasing use of
mobile phone technology. While clinical studies are identifying possible
detrimental effects of RF-EMR, it is imperative that mechanistic studies are
conducted that elucidate the manner in which RF-EMR perturbs biological
function, thus supplying a rational cause. A focus on the male reproductive system may experience as consequences of the personal storage of mobile
devices, the unique vulnerability of the highly specialised sperm cell, and the
future health burden that may be created if conception proceeds with defective,
DNA-damaged spermatozoa. While this subject remains a topic of active debate,
this review has considered the growing body of evidence suggesting a possible
role for RF-EMR induced damage of the male germ line. In a majority of studies,
this damage has been characterized by loss of sperm motility and viability as
well as the induction of ROS generation and DNA damage. We have therefore given
consideration to the potential mechanisms through which RF-EMR may elicit these
effects on spermatozoa, which we utilized as a sensitive model system. We
propose a mechanistic model in which RF-EMR exposure leads to defective
mitochondrial function associated with elevated levels of ROS production and
culminates in a state of oxidative stress that would account the varying
phenotypes observed in response to RF-EMR exposure. With further complementary
data, this model will provide new impetus to the field and stimulate research
that will allow us to confidently assess the reproductive hazards of mobile
phone usage.
-- Adams
JA, Galloway TS, Mondal D, Esteves SC, Mathews F. Effect of mobile telephones
on sperm quality: A systematic review and meta-analysis. Environ Int. 2014 Sep;70:106-12. doi: 10.1016/j.envint.2014.04.015. Summary
Mobile
phones are owned by most of the adult population worldwide. Radio-frequency
radiation (RFR) from these devices could affect sperm development and function.
Around 14% of couples in high- and middle-income countries have difficulty
conceiving. Male infertility is involved approximately 40% of the time. Several countries have reported unexplained declines in semen quality.
Animal research has found that RFR can affect the
cell cycle of sperm, increase sperm cell death and produce histological changes
in the testes. Research on humans has found that prolonged mobile phone
use is associated with decreased motility, sperm concentration, morphology and
viability suggesting a likely impact on fertility.
The authors of this peer-reviewed study conducted a
systematic review of the research and a quantitative analysis to determine
whether exposure to mobile phone radiation affects human sperm quality.
Participants were from fertility clinics and research centers.
The study examined the sperm quality outcome measures most
frequently used to assess fertility in clinical settings: motility (the
ability to move properly through the female reproductive tract), viability (the ability to fertilize the egg), and concentration (the number of
sperm in a milliliter of ejaculate).
Ten studies were examined including 1,492 human sperm samples. Exposure to
mobile phones was found to be associated with a significant eight per cent average reduction
in sperm motility and a significant nine per cent average reduction in sperm viability. The effects on sperm concentration were more equivocal. The results
were consistent across experimental laboratory studies and correlational observational
studies.
The
authors concluded that the overall results suggest that mobile phone exposure
negatively affects sperm quality in humans. The clinical importance of these effects in this study may be limited to subfertile men and to men at
the lower-end of the normal spectrum.
Open access paper: http://bit.ly/cellphonespermdamage. -- Liu K, Li Y, Zhang G, Liu J, Cao J, Ao L, Zhang S. Association between mobile phone use and semen quality: a systemic review and meta-analysis. Andrology. 2014 Jul;2(4):491-501.
Abstract
Possible hazardous health effects of radiofrequency electromagnetic radiations emitted from mobile phone on the reproductive system have raised public concern in recent years. This systemic review and meta-analysis was prepared following standard procedures of the Cochrane Collaboration and the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement and checklist. Relevant studies published up to May 2013 were identified from five major international and Chinese literature databases: Medline/PubMed, EMBASE, CNKI, the VIP database and the Cochrane Central Register of Controlled Trials in the Cochrane Library. Eighteen studies with 3947 men and 186 rats were included in the systemic review, of which 12 studies (four human studies, four in vitro studies and four animal studies) with 1533 men and 97 rats were used in the meta-analyses. Systemic review showed that results of most of the human studies and in vitro laboratory studies indicated mobile phone use or radiofrequency exposure had negative effects on the various semen parameters studied. However, meta-analysis indicated that mobile phone use had no adverse effects on semen parameters in human studies. In the in vitro studies, meta-analysis indicated that radiofrequency radiation had detrimental effect on sperm motility and viability in vitro [pooled mean difference (MDs) (95% CI): -4.11 (-8.08, -0.13), -3.82 (-7.00, -0.65) for sperm motility and viability respectively]. As for animal studies, radiofrequency exposure had harmful effects on sperm concentration and motility [pooled MDs (95% CI): -8.75 (-17.37, -0.12), -17.72 (-32.79, -2.65) for sperm concentration and motility respectively]. Evidence from current studies suggests potential harmful effects of mobile phone use on semen parameters. A further multicentred and standardized study is needed to assess the risk of mobile phone use on the reproductive system.
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