Laura Birks, Mònica Guxens, Eleni Papadopoulou, Jan Alexander, Ferran Ballester, Marisa Estarlich, Mara Gallastegi, Mina Ha, Margaretha Haugen, Anke Huss, Leeka Kheifets et al. Maternal cell phone use during pregnancy and child behavioral problems in five birth cohorts. Environment International. Published online April 7, 2017.
• Largest study to date to use prenatal cell phone use data collected prospectively.
• High prenatal cell phone use linked to hyperactivity/inattention problems in child.
• No prenatal cell phone use linked to low risk for any behavioral problems in child.
• Analysis adjusted for many confounders, but associations cannot be judged causal.
• Future research should adjust for parenting style, maternal hyperactivity, and more.
Methods We used individual participant 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). We categorized cell phone use into none, low, medium, and high, based on frequency of calls during pregnancy reported by the mothers. Child behavioral problems (reported by mothers using the Strengths and Difficulties Questionnaire or Child Behavior Checklist) were classified in the borderline/clinical and clinical ranges using validated cut-offs in children aged 5–7 years. Cohort specific risk estimates were meta-analyzed.
Results Overall, 38.8% of mothers, mostly from the Danish cohort, reported no cell phone use during pregnancy and these mothers were less likely to have a child with overall behavioral, hyperactivity/inattention or emotional problems. Evidence for a trend of increasing risk of child behavioral problems through the maternal cell phone use categories was observed for hyperactivity/inattention problems (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). This association was fairly consistent across cohorts and between cohorts with retrospectively and prospectively collected cell phone use data.
Conclusions Maternal cell phone use during pregnancy may be associated with an increased risk for behavioral problems, particularly hyperactivity/inattention problems, in the offspring. The interpretation of these results is unclear as uncontrolled confounding may influence both maternal cell phone use and child behavioral problems.
Asghari A, Khaki AA, Rajabzadeh A, Khaki A. A review on Electromagnetic fields (EMFs) and the reproductive system. Electron Physician. 2016 Jul 25;8(7):2655-62. doi: 10.19082/2655. eCollection 2016.
Environmental factors, such as electromagnetic waves, induce biological and genetic effects. One of the most important physiological systems involved with electromagnetic fields (EMFs) is the genital system. This paper reviews the effects of EMFs on human reproductive organs, female animals, fetus development and the importance of two types of natural antioxidants, i.e., vitamin E and fennel. The studies presented in this review referred to the effects of different exposures to EMFs on the reproductive system, and we tried to show the role of natural antioxidants in reducingthe effects of the exposures. Many studies have been done on the effects of ionizing and non-ionizing electromagnetic waves on the cell line of spermatogenesis, sexual hormones, and the structure of the testes. Also, about the hormonal cycle, folliculogenesis and female infertility related to EMF have been given more consideration. In particular, attention is directed to pregnant women due to the importance of their fetuses. However, in addition to the studies conducted on animals, further epidemiological research should be conducted.
Many studies have shown that electromagnetic fields can have destructive effects on sex hormones, gonadal function, fetal development, and pregnancy. So people must be aware of the negative effects of EMFs. Although the impact of the waves varied at different frequencies, it is better to stay as far away as possible from their origin because of the risks associated with exposures to these waves. In addition, people can use natural antioxidants to help reduce the effects of these waves.
Open Access Paper: https://www.ncbi.nlm.nih.gov/p
(Updated: April 26, 2017)
behavioral problems: http://bit.ly/2ojHgiz
behavioral problems: http://www.ncbi.nlm.nih.gov/pubmed/21138897
hearing loss: http://www.ncbi.nlm.nih.gov/pubmed/23574412
preterm birth: http://www.ncbi.nlm.nih.gov/pubmed/23905441
spontaneous abortion: http://www.ncbi.nlm.nih.gov/pubmed/25937931
spontaneous abortion: http://www.ncbi.nlm.nih.gov/pubmed/25877464
blood, brain & behavior: http://bit.ly/2nVnY16
bone & muscle tissue: http://www.ncbi.nlm.nih.gov/pubmed/26959616
brain: http://www.ncbi.nlm.nih.gov/pubmed/27544572 (DECT cordless phone)
brain & liver: http://www.ncbi.nlm.nih.gov/pubmed/24580725
brain & behavior: http://www.ncbi.nlm.nih.gov/pubmed/22428084 (Yale study)
cerebellum, hippocampus, heart, kidney & liver: https://www.ncbi.nlm.nih.gov/pubmed/28434276
brain & behavior: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4902983/
Feb 9, 2016
The French phone manufacturer WIKO states in their manual for the Pulp 4G smartphone (pp. 21-22):
*The SAR limit for mobile devices is 2.0 watts / kilogram (W/kg) averaged over ten grams of body tissue. SAR values may vary according to the standards for reporting information that are in force in different countries. [My note: This standard is used in France and many other countries. In the U.S. the limit is 1.6 watts / kilogram averaged over one gram of body tissue.]
Tips for Reducing Exposure Levels
We recommend that you use your phone in good reception conditions in order to reduce the amount of radiation received. It is advisable to limit the amount of time you use the phone in underground car parks and when travelling by car or train, etc.
Reception conditions are indicated by the bars that are displayed on your phone: the more bars there are, the better the reception quality.
We recommend that you use the hands-free kit to reduce exposure to radiation.
To reduce the adverse effects of prolonged radiation exposure, we advise teenagers to hold the phone away from their lower abdomen, and that pregnant women hold the phone at a distance from their stomach."
Copyright © 2015 WIKO
July 1, 2015
Over one hundred medical doctors and scientific experts from around the world agree: the risks of exposure to RF radiation from wireless devices for pregnant women and their unborn children are real, and women have a Right To Know.
NEW YORK, July 1, 2015 /PRNewswire/ -- More than one hundred medical doctors, scientists and public health experts from around the world have signed a Joint Statement advising pregnant women to take simple precautions to protect themselves and their babies from wireless radiation. The Statement is part of a national right-to-know campaign called the BabySafe Project created by two non-profit organizations to inform pregnant women about the issue.
"The wireless world may be convenient, but it's not without risks," says Patricia Wood, Executive Director of Grassroots Environmental Education and co-creator of the BabySafe Project. "When more than one hundred of the world's leading medical doctors and researchers on wireless radiation say we have enough evidence for women to take protective action, we think women should know about it."
The project is based on recent scientific studies suggesting that radiation from wireless devices is capable of interfering with the tiny electrical impulses that help synapses connect in a developing brain. Researchers at Yale University have been able to demonstrate that the brains of laboratory mice exposed to pulsed radio frequency radiation in utero were wired differently from those of the mice who were not exposed, resulting in behavioral differences that include poorer memory and symptoms that resemble ADHD in children.
The Yale study builds on more than twenty years of research and hundreds of independent, peer-reviewed studies showing that exposure to radiation from wireless devices can have non-thermal, biological effects on humans, including DNA strand breaks and other impacts not previously known.
The authors of many of those studies are among those calling for precautions.
"The fetus is perhaps the most vulnerable to these types of insults, when the brain is just forming, when all of the organ systems are just beginning to develop," says Dr. Hugh Taylor, Chief of Obstetrics and Gynecology, Yale-New Haven Hospital, Professor of Women's Health at Yale University, and lead author of the study. "There's essentially no downside to being cautious and protecting your baby. Why not do it?"
SOURCE Grassroots Environmental Education
June 3, 2014
The following joint statement on pregnancy and wireless radiation is part of the Baby Safe Project, a new public awareness initiative designed to inform women about the links between pregnancy and wireless radiation. The statement was signed by 44 physicians and scientists from 13 nations, and by 13 educators who have studied wireless radiation health effects.
The project is a joint initiative of two environmental health non-profit organizations: Grassroots Environmental Education and Environmental Health Trust.
A video of the press conference that launched the Baby Safe Project and supplementary resources are available at http://bit.ly/1kqJUur/.
Dr. Hugh Taylor from the Yale University School of Medicine, Dr. Devra Davis from the Environmental Health Trust, and Dr. Maya Shetreat-Klein, a pediatric neurologist who treats autistic children, made presentations at the press conference and answered questions from journalists.
Dr. Taylor discussed his peer-reviewed, experimental research on pregnant mice that were exposed to cell phone radiation. In his study prenatal exposure to cell phone radiation resulted in decreased memory and increased hyperactivity in the offspring. A dose-response relationship was observed between the amount of fetal exposure to cell phone radiation and altered brain activity in the offspring. Dr. Taylor recommends that pregnant women limit their exposure to cell phone radiation.
Dr. Davis discussed the history of tobacco and asbestos in the U.S. to argue for a precautionary approach to reducing risks from "possibly carcinogenic" environmental exposures like wireless radiation (as determined by the World Health Organization). She summarized peer-reviewed, experimental research on prenatal exposure to microwave radiation conducted by Dr. Nesrin Seyhan which found DNA damage in mice and by Dr. Suleyman Kaplan which found damage to brain cells in the hippocampus as well as adverse behavioral effects in the offspring. Dr. Davis provided recommendations on how to reduce exposure to cell phone and Wi-Fi radiation.
Dr. Shetreat-Klein discussed peer-reviewed observational research that found prenatal exposure to wireless radiation associated with adverse behavioral changes in children. She advises pregnant women to keep cell phones away from their bodies.
In response to audience questions, Dr. Davis discussed the need for research funding. She mentioned that the Environmental Health Trust and Dr. Joel Moskowitz at Berkeley are calling for an annual, one dollar fee per cell phone to be devoted to training and research on wireless radiation and health. Dr. Taylor reported that his patients appreciate receiving precautionary information regarding the need to reduce exposure to wireless radiation during pregnancy. Dr. Davis discussed recommendations from the U.S. General Accountability Office and the American Academy of Pediatrics that call on the FCC to test cell phones in a realistic manner. Finally, Dr. Davis discussed the potential product liability faced by the cell phone industry due to adverse health impacts, an issue which she addressed in her book on cell phone radiation, Disconnect.
We join together as physicians, scientists and educators to express our concern about the risk that wireless radiation poses to pregnancy and to urge pregnant women to limit their exposures.
We recognize that the exquisitely delicate systems that direct the development of human life are vulnerable to environmental insults, and that even minute exposures during critical windows of development may have serious and life-long consequences.
We know that the scientific process demands a thorough and exhaustive examination of the possible impact of wireless radiation on health; however, we believe substantial evidence of risk, rather than absolute proof of harm, must be the trigger for action to protect public health.
We call on the research community to conduct more studies to identify the mechanisms by which a fetus could be affected by wireless radiation exposures. We call on our elected leaders to support such research and to advance policies and regulations that limit exposures for pregnant women. We call on industry to implement and explore technologies and designs that will reduce radiation exposures until such research is carried out.
We affirm our role as health and science professionals to inform the public about the potential dangers associated with early-life exposures to wireless radiation, and invite all professionals engaged in obstetric, pediatric, and environmental health advocacy to join us in our quest to ensure the safety and health of future generations.
Signatories (Affiliations listed for identification purposes only)
Mikko Ahonen, PhD, University of Tampere, Finland
Jennifer Armstrong, MD, Ottawa Environmental Health
Martin Blank, PhD, Associate Professor of Physiology and Cellular Biophysics, Columbia University
David Brown, PhD, Public Health Toxicologist, Environment and Human Health, Inc.
Lois Brustman, MD, Maternal-Fetal Medicine Specialist, St. Luke's - Roosevelt Hospital Center
Sheila Bushkin-Bedient, MD, Concerned Health Professionals of New York
Richard Clapp, DSc, MPH, Professor Emeritus of Environmental Health, Boston University
Larysa Dyrszka, MD, Pediatrician, New York
Oleg Gregoriev, DrSc, PhD, Chairman, Russian National Committee on Non-Ionizing Radiation
Gunnar Heuser, MD, University of California at Los Angeles (retired)
Olle Johansson, PhD, Department of Neuroscience, Karolinska Institute, Sweden
Cynthia Johnson-McKay, MD, Columbia University
Luana Licata, PhD, University of Rome Tor Vergata
Don Maisch, PhD, www.emfacts.com, Australia
Asish Mehta, MD, MCh, DNB, Neurological Surgeon Mumbai, India
Hildor Palsdottir, PhD, School of Medicine, New York University
Janet Perlman, MD, MPH, University of California at Berkeley
Rachel Naomi Remen, MD, School of Medicine, University of California at San Francisco
Lisa Ridgway, MD, Pediatrician
Aviva Romm, MD, Family Physician, Boston
Maya Shetreat-Klein, MD, Pediatric Neurologist, Bronx, New York
Colin L. Soskolne, PhD, University of Canberra, Australia
Ken Spaeth, MD, MPH, Hofstra University, North Shore--LIJ Health System
Yael Stein, MD, Hebrew University – Hadassah Medical Center, Jerusalem, Israel
Hugh Taylor, MD, Chief of Obstetrics and Gynecology, Yale-New Haven Hospital
John Wargo, PhD, Professor of Risk Analysis, Environmental Policy, and Political Science, Yale University
John West, MD, Surgeon, RadNet
Wafaa Aborashed, Bay Area Healthy 880 Communities
Camilla Rees, MBA, ElectromagneticHealth.org
The Baby Safe Project. "What You Need to Know about Wireless Radiation and Your Baby"
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