Magda Havas

Magda Havas
Trent University · Trent School of the Environment

B.Sc., Ph.D.

About

73
Publications
82,637
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1,436
Citations
Introduction
Dr. Magda Havas is Professor Emerita at Trent University. Her current research deals with the biological effects (both harmful and beneficial) of non-ionizing electromagnetic frequencies. She is currently developing empirical tests to diagnose & treat people with EHS. She works with health care professionals & provides expert testimony in legal cases associated with electromagnetic pollution. Dr. Havas has more than 200 publications and has given more than 360 invited presentations.
Skills and Expertise
Additional affiliations
January 1989 - present
Trent University
Description
  • I do research on the biological effects of electromagnetic fields and electromagnetic radiation within the non-ionizing band of the electromagnetic spectrum.
January 1983 - December 1988
University of Toronto
Description
  • Here I did research on air and water quality and the effects on aquatic and terrestrial organisms
January 1981 - December 1984
Cornell University
Description
  • I studied the response of zooplankton to aluminum at Mirror Lake.

Publications

Publications (73)
Article
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Clinical research aiming at objectively identifying and characterizing diseases via clinical observations and biological and radiological findings is a critical initial research step when establishing objective diagnostic criteria and treatments. Failure to first define such diagnostic criteria may lead research on pathogenesis and etiology to seri...
Article
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This is a double-blind, placebo-controlled replication of a study that we previously conducted in Colorado with 25 subjects designed to test the effect of radio frequency radiation (RFR) generated by the base station of a cordless phone on heart rate variability (HRV). In this study, we analyzed the response of 69 subjects between the ages of 26 an...
Chapter
Introduction Our relationship with light and especially with light from the sun has gone through several cultural transformations. Early civilizations worshipped the sun. Around the time of Hippocrates, sunlight was used for healing (heliotherapy) and was prescribed along with thermal baths and rest. In the middle ages, since peasants worked the f...
Article
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This paper attempts to resolve the debate about whether non-ionizing radiation (NIR) can cause cancer–a debate that has been ongoing for decades. The rationale, put forward mostly by physicists and accepted by many health agencies, is that, “since NIR does not have enough energy to dislodge electrons, it is unable to cause cancer.” This argument is...
Article
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Background: This is a partial replication study of work conducted by high school students in Denmark as part of their science fair project. Objective: The purpose of this study is to determine whether radiation from a Wi-Fi router affects germination and growth of garden cress (Lepidium sativum), broccoli (Brassica oleracea), red clover (Trifolium...
Article
Ground current commonly referred to as "stray voltage" has been an issue on dairy farms since electricity was first brought to rural America. Equipment that generates high-frequency voltage transients on electrical wires combined with a multigrounded (electrical distribution) system and inadequate neutral returns all contribute to ground current. D...
Article
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We are scientists engaged in the study of biological and health effects of non-ionizing electromagnetic fields (EMF). Based upon peer-reviewed, published research, we have serious concerns regarding the ubiquitous and increasing exposure to EMF generated by electric and wireless devices. These include–but are not limited to–radiofrequency radiation...
Article
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Abstract Exposure to electrosmog generated by electric, electronic, and wireless technology is accelerating to the point that a portion of the population is experiencing adverse reactions when they are exposed. The symptoms of electrohypersensitivity (EHS), best described as rapid aging syndrome, experienced by adults and children resemble symptoms...
Conference Paper
This is a replication of a study that we previously conducted in Colorado with 25 subjects designed to test the effect of electromagnetic radiation generated by the base station of a cordless phone on heart rate variability (HRV). In this study, we analyzed the response of 69 subjects between the ages of 26 and 80 in both Canada and the USA. Subjec...
Article
This is a replication of a study that we previously conducted in Colorado with 25 subjects designed to test the effect of electromagnetic radiation generated by the base station of a cordless phone on heart rate variability (HRV). In this study, we analyzed the response of 69 subjects between the ages of 26 and 80 in both Canada and the USA. Subjec...
Article
Full-text available
In this paper an introduction to the concept of electrosmog (a form of electromagnetic pollution) and electrosensitivity (an adverse reaction to electrosmog) is provided. Chronic fatigue, chronic pain, sleep, mood and neurological disorders, cognitive dysfunction, dizziness, nausea, heart palpitations, impaired glucose regulation, tinnitus and skin...
Article
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Experiments were conducted on planktonic crustaceans and insect larvae from acidic and alkaline tundra ponds at the Smoking Hills, N.W.T. to determine their tolerance to low pH and elevated levels of potentially toxic elements, including Al. The crustaceans (Daphnia middendorffiana, Diaptomus arcticus, Lepidurus arcticus, Branchinecta paludosa), wh...
Article
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Aluminum may be either harmful or beneficial to Daphnia magna (Straus) depending on pH and on the Al concentration in the water. My results are based on laboratory experiments conducted at various concentrations of total Al (0.02–1.02 mg/L) in soft water (2.5 and 12.5 mg Ca/L) adjusted from pH 6.5 to 4.5. Maximum Al toxicity and maximum Al bioaccum...
Article
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People who live near wind turbines complain of symptoms that include some combination of the following: difficulty sleeping, fatigue, depression, irritability, aggressiveness, cognitive dysfunction, chest pain/pressure, headaches, joint pain, skin irritations, nausea, dizziness, tinnitus, and stress. These symptoms have been attributed to the press...
Article
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Our dependence on electricity and our growing dependence on wireless telecommunication technology is causing this planet to be inundated with electromagnetic energy ranging in frequency from less than 60 Hz to greater than 2 GHz. Concerns expressed by the public, who live near power lines, cell phone antennas, or television and radio broadcast towe...
Article
Experiments were conducted to compare the relative sensitivity and chemical composition of aquatic invertebrates (insects and crustaceans) exposed to low pH. Test organisms were collected from tundra ponds at the Smoking Hills, N.W.T. One of the ponds was alkaline (pH 8.2), the other was acidified (pH 2.8) as a result of natural SO2 fumigations. Ba...
Article
The effect of low pH on sodium-22 influx and outflux of Daphnia magna and Daphnia middendorffiana was assessed. Experiments were conducted in both hard and soft water with experimental pHs ranging from 3.5 to 8.0. In hard water, at and below pH 4.0, there was a net loss of sodium from both species. The rate of sodium loss (outflux) increased signif...
Article
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The effect of aluminum on the survival of Daphnia catawba, Holopedium gibberum, Chaoborus punctipennis, and Chironomus anthrocinus was determined. Experiments were conducted in soft water adjusted to pH 6.5 (original), 5.0, 4.5, 4.0, and 3.5, at three concentrations of aluminum (0.02, 0.32, 1.02 mg/L) which cover the range typical of soft-water lak...
Article
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Epipelic and planktonic algal communities have been examined periodically for 3 years from four tundra ponds which have very low pH values (1.8–3.6) and high heavy metal concentrations due to long-term fumigation by sulphur dioxide and sulphuric acid aerosols from nearby lignite burns. These communities have been compared with those of control pond...
Article
Full-text available
Aim: The effect of pulsed (100 Hz) microwave (MW) radiation on heart rate variability (HRV) was tested in a double blind study. Materials and Methods: Twenty-five subjects in Colorado between the ages of 37 to 79 completed an electrohypersensitivity (EHS) questionnaire. After recording their orthostatic HRV, we did continuous real-time monitoring o...
Article
Poor power quality (dirty electricity) is ubiquitous especially in schools with fluorescent lights and computers. Previous studies have shown a relationship between power quality and student behavior/teacher health. The purpose of this study is to determine the ability of power line filters to reduce dirty electricity in a school environment and to...
Article
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Transient electromagnetic fields (dirty electricity), in the kilohertz range on electrical wiring, may be contributing to elevated blood sugar levels among diabetics and pre-diabetics. By closely following plasma glucose levels in four Type 1 and Type 2 diabetics, we find that they responded directly to the amount of dirty electricity in their envi...
Article
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With the advent of this proposal, San Francisco is considering converting the city into a wireless zone. Whatever decision is made should be based on the best available scientific evidence. Wi-Fi simply has not been around long enough to know how these particular frequencies and intensities are likely to affect people who are exposed to them on a d...
Article
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Dirty electricity is a ubiquitous pollutant. It flows along wires and radiates from them and involves both extremely low frequency electromagnetic fields and radio frequency radiation. Until recently, dirty electricity has been largely ignored by the scientific community. Recent inventions of metering and filter equipment provide scientists with th...
Article
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Magnetic flux density was measured in the passenger compartment of buses, streetcars, subways and GO-trains that move millions of commuters daily in the Greater Toronto Area. The highest magnetic fields were found in subways (mean 30 mG, range 3 to 100 mG), followed by streetcars (mean 30 mG, range 2 to 100 mG), buses (mean 11 mG, range 1 to 50 mG)...
Article
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Deteriorating power quality is becoming increasingly common in developed countries. Poor power quality, also known as dirty electricity, refers to a combination of harmonics and transients generated primarily by electronic devices and by non-linear loads. We have assumed, until recently, that this form of energy is not biologically active. However,...
Article
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The purpose of this study was to test the effect of the Graham/Stetzer microsurge filters on the wellbeing of teachers and on the behavior of their students in a private school (grades 1 to 12) in Toronto, Canada. GS filters remove electromagnetic frequencies from 4 to 100 kHz on indoor wiring and they were installed in this school because one of t...
Article
Electric and magnetic fields were measured during the summer of 1998 in south-central Ontario within the business district of 60 communities, ranging in size from 1000 to 2.3 million people. The mean magnetic flux density for the 60 communities was 5.8 mG. Communities with larger populations generally had higher magnetic flux densities than those w...
Article
The current study compares the tolerance, to Ni and Cu, of three species of phytoplankton, Urosolenia eriensis, Cosmarium minimum and Scenedesmus acutus, isolated from Alice Lake, Sudbury, Canada. An attempt was made to determine if metal tolerance is related to the presence and abundance of these species in the lake. Alice Lake was subjected to 60...
Article
The changes in metal concentration following significant reductions in atmospheric metal loading of two nickel and copper contaminated lakes in Coniston Valley of the Sudbury Basin of Ontario, Canada were simulated by using steady-state and dynamic versions of a modified Quantitative Water Air Sediment Interaction (QWASI) Model. Metal partitioning...
Article
This paper describes the recovery pathways of two lakes situated near the Coniston nickel-copper smelter. These lakes were exposed to very intense airborne pollution, including SO2, H2SO4, Ni and Cu, during the 60 year operation of the smelter. After the closure of the Coniston smelter in 1972 and the subsequent improvement in air quality, the wate...
Article
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Studies are reported on two small lakes at Sudbury, Ontario located close to a nickel-copper smelter which closed in 1972. At that stage, Baby Lake had a pH of 4.0–4.2 while the adjacent Alice Lake had a pH 5.9–6.3. Both lakes were almost entirely devoid of algae and had neither Zooplankton nor fish. Soon after the closure of the smelter, with its...
Conference Paper
Characterizing something as a problem commits us to coping with the problem in a problem-solving mode. Furthermore, while individuals might make a difference, a large-scale task such a saving the Earth would call for a group problem-solving configuration. Communication, cooperation, shared vision and negotiation introduce new complexity and often u...
Article
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This paper presents an overview of the response to acidification of aquatic fauna with special emphasis on Zooplankton, benthos, and fishes. Changes in behavior, body chemistry, reproduction, and species diversity are presented based on laboratory experiments and field studies in both Europe and North America. Differences in species sensitivity are...
Article
Fishes, Zooplankton, insect larvae, and benthic invertebrates differ in their sensitivity to acidic waters. Some species are able to survive and complete their life-cycle below pH 3.5 while others are eliminated once the pH drops below 5.5. Generally, acid-sensitive fauna are highly water permeable and have difficulty regulating osmotically essenti...
Chapter
The aim of this session is to: (i) identify indicators of recovery (ii) assess patterns and rates of recovery (iii) determine general properties of ecosystem recovery (iv) compare the process of recovery with that of degradation (v) identify interventions needed to actualize the recovery process
Article
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The effects of arsenate on the growth characteristics of five isolates of the freshwater alga, Chlorella vulgaris Beij., were examined. Two field isolates originated from arsenic-contaminated sites in Yukon, Canada and Kyushi, Japan; two reference isolates were obtained from the University of Texas Culture Collection. One isolate was selected for a...
Article
A number of opportunities exist for involving the public in environmental monitoring. This paper outlines some examples where this has been done, evaluates these examples, and then summarizes some of the benefits as well as the disadvantages of this approach.
Chapter
Three case studies that deal with the recovery of aquatic ecosystems from acidic stress are presented. These studies include (1) the experimental acidification and partial recovery of Lake 223 in the Experimental Lakes Area (ELA) of northwestern Ontario, (2) the recovery of two severely acidified and metal-contaminated lakes near the now-closed Con...
Book
As has been the case with many environmental issues of the twentieth century, acidic precipitation has its origin in emissions to the atmosphere of numerous compounds from both natural and man-made sources. This volume of the subseries Acidic precipitation emphasizes some of the classical interactions between acidic deposition and ecological effect...
Chapter
Wetlands include ecosystems on predominantly inorganic sediments and those that accumulate organic peat. Peat-accumulating ecosystems cover about 460 Mha — approximately 3% of the Earth’s land surface — and contain about 150 Gt of carbon — a value that may be compared with an estimate of 560 Gt of carbon in the Earth’s non-marine biomass. On the wh...
Chapter
This chapter presents some of the major findings on the effects of acidic deposition on surface water and ground water chemistry, sediment chemistry, and aquatic biota. Acid deposition has had a significant impact on poorly buffered, soft-water lakes and streams in Europe and North America. In addition to the decrease in pH, metals—leached from the...
Article
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This paper describes a modified hematoxylin staining technique that can be used to locate sites of A1 binding in freshwater plants and animals. This technique is fast, simple, and inexpensive to use. It is more reliable for organisms raised under controlled conditions, although it can be used on organisms isolated from the field. In the presence of...
Article
The purpose of the present study was to assess the rate of recovery of acidified lakes located near the town of Coniston following an abrupt reduction in atmospheric SO2 and metal emissions at the Coniston smelter which closed in 1972. The water chemistry of several lakes was studied over a period of 16 yr (1968–1984). In one extremely acidic lake...
Article
Full-text available
The effects of aluminum (Al) on sodium (Na) regulation by the freshwater crustacean Daphnia magna were determined. (22)Na influx and outflux experiments were conducted in soft water adjusted to pH 4.5, 5.0, and 6.5 (reference pH) with either ambient (0.02 mg/liter) or high (1.02 mg/liter) concentrations of total Al. The results indicate that Al tox...
Article
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A "red herring," according to Funk and Wagnalls' Standard College Dic-tionary, is "a diverting of attention from the main subject by introducing some irrelevant topic." Of the thousands of articles con-cerned with the phenomenon of acid rain, several, which include promi-nent red herrings (for example Poundstone 1980, Frantisak 1980, Hamilton 1981)...
Article
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Five common misconceptions, red herrings, regarding the effects of acid deposition on aquatic ecosystems are described in an attempt to clarify some of the confusion they have created. These misconceptions are the following: Bog lakes have been acidic for thousands of years; thus the acidification of lakes is not a recent phenomenon. The early meth...
Article
Spontaneous burning of bituminous shales at the Smoking Hills in the Canadian Arctic has produced intense acidic fumigations and strongly influenced the local tundra. The burns are of great antiquity. In an area of typically alkaline ponds with pH above 8.0, ponds within the fumigation zone have been acidified below pH 2.0. Elevated concentrations...
Article
The crustaceans (Daphnia middendorffiana, Diaptomus arcticus, Lepidurus arcticus, Branchinecta paludosa), which are found only in alkaline ponds, died rapidly below pH 4.5. The insect larvae (Orthocladius consobrinus, Limnephilus pallens) from the same alkaline ponds could survive for extended periods at pH 3.5, though they do not occur in acidic w...
Article
The NATO Advanced Research Institute was held to bring together international experts to present, examine and debate the scientific research relevant to the effects of acid rain on terrestrial ecosystems. Topics included: the nature of precipitation reaching forest canopy and ground; effects of acidic atmospheric inputs on vegetation and soils; eff...
Book
This volume contains papers presented at a NATO Advanced Research Institute, sponsored by their Eco-Sciences Panel, on "The effects of acid precipitation on vegetation and soils," held at Toronto, Canada from May 22-26, 1978. The organizing expenses and greater part of the expenses of the speakers and chair~en were provided by N.A.T.O. The scientif...
Article
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In October 2002, the Superintendent, Ron Perry, invited a power quality expert, to measure the school for electrical problems. He found elevated levels of high frequency radiation on the wires in the school (commonly referred to as dirty electricity) and installed Graham Stetzer filters to remove these high frequencies. The staff knew that an elect...
Article
Full-text available
Purpose: The effect of microwav radiation on heart rate variability (HRV) was tested in a double blind study. Method: Twenty-five subjects in Colorado between the ages of 37 to 79 completed an electrohypersensitivity (EHS) questionnaire. After recording their orthostatic HRV, we did continuous real-time monitoring of HRV in a provocation study, whe...
Article
Full-text available
Summary Graham/Stetzer filters significantly reduce radio frequency electrical noise on indoor wiring generated by computers, energy efficient lighting, dimmer switches, and entertainment units within the home or workplace and transported into buildings by power lines from neighbouring property. The resultant improvements in power quality in homes...
Article
Acidification affects all components of biological communities in lakes and streams: microbes, algae, macrophytes, invertebrates, fish amphibians, and other vertebrates that rely on aquatic ecosystems for habitat or food. Mechanisms of effect are both direct (toxic responses to changes in chemistry) and indirect (e.g., expressed through the food ch...

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