Browse 8,700 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.
Showing 543 studies in Cardiovascular
Sol M. Michaelson, Joe W. Howland, Wm. B. Deichmann · 1971
Researchers exposed dogs to high-intensity microwave radiation at two frequencies (24,000 MHz and 1,285 MHz) for extended periods - up to 2,631 hours over 20 months. Despite power levels 400-500 times higher than typical cell phone exposure, no significant health effects were observed in the animals.
STEPHEN N. HUNYOR et al. · 1971
Researchers tested how various electrical devices affected three implanted pacemakers in 1971. Only direct contact with physiotherapy diathermy equipment caused interference, speeding up the pacemaker rate to 136 beats per minute. Common household appliances and microwave ovens showed no interference effects.
REFSHAUGE · 1971
This 1971 research examined whether microwave ovens could interfere with cardiac pacemakers, making it one of the earliest studies to investigate electromagnetic interference between common household appliances and critical medical devices. The study addressed growing concerns about the safety of microwave technology for people with implanted pacemakers.
Sol M. Michaelson · 1971
This comprehensive 1971 review examined the biological effects of microwave radiation exposure, finding that organisms can experience thermal stress at specific frequencies and power levels. The analysis covered effects on multiple body systems including the eyes, blood formation, thyroid, reproductive organs, nervous system, and cardiovascular system. The review aimed to separate scientifically substantiated effects from speculative claims about microwave exposure risks.
André-Jean Berteaud et al. · 1971
This 1971 French study examined how pulsed and modulated electromagnetic radiation affects the development of Trypanosoma equiperdum infections in laboratory animals. The research investigated whether UHF electromagnetic waves could influence parasitemia (parasite levels in blood) during infection progression. This represents early biological research into how electromagnetic fields might interact with infectious disease processes.
André-Jean Berteaud et al. · 1971
This 1971 French study investigated whether pulsed and modulated electromagnetic radiation affects the development of Trypanosoma equiperdum infections in laboratory animals. The research examined the relationship between UHF electromagnetic wave exposure and parasitemia (parasite levels in blood). This represents early research into how electromagnetic fields might influence infectious disease progression.
Dolores Rotkovska, A. Vacek · 1971
Researchers exposed mice to microwave radiation at 2450 MHz (the same frequency used in microwave ovens) for one hour and found significant effects on blood-forming stem cells in the spleen and bone marrow. The study showed a wave-like pattern where stem cell activity first decreased, then increased beyond normal levels, and the animals became less sensitive to additional radiation exposure.
Paul S. Ruggera, Robert L. Elder · 1971
This 1971 technical report by Paul Ruggera and Robert Elder examined how electromagnetic radiation interferes with cardiac pacemakers. The research investigated electromagnetic interference (EMI) effects on these life-sustaining medical devices. This early work helped establish understanding of how EMF exposure can disrupt critical medical equipment.
James F. Arens, George L. Leonard · 1971
This 1971 research investigated the dangers of using microwave radiation to warm blood for medical transfusions. The study examined how microwave heating could cause overheating and hemolysis (destruction of red blood cells), identifying critical safety concerns for blood warming procedures in healthcare settings.
Glotova KV, Sadchikova MN · 1970
Soviet researchers Glotova and Sadchikova studied how chronic microwave radiation exposure affects the cardiovascular system in humans, likely focusing on occupational workers. This 1970 technical report examined the development and progression of heart and blood vessel changes from ongoing microwave exposure. The research represents early documentation of microwave radiation's potential cardiovascular effects in real-world exposure scenarios.
N. R. DAIACHENKO · 1970
This 1970 Soviet research examined how ultra high frequency electromagnetic fields affect heart muscle function in humans. The study represents early scientific investigation into RF radiation's cardiovascular effects, decades before widespread wireless technology adoption. While specific findings aren't available, this research helped establish the foundation for understanding EMF impacts on cardiac health.
Madeleine F. Barnothy, Jeno M. Barnothy · 1970
This 1970 study exposed mice to strong magnetic fields for 20 days and found that platelet-producing cells (megakaryocytes) decreased in bone marrow while increasing in the spleen. The research suggests magnetic field exposure can alter where blood platelets are produced in the body, potentially affecting blood clotting function.
Koreneva, L.G., Ga'iduk, V.I. · 1970
This 1970 research investigated how ultrahigh frequency electromagnetic fields interact with hemoglobin through resonance effects. The study examined the fundamental mechanisms by which these frequencies affect the oxygen-carrying protein in our blood. This early work helped establish the scientific foundation for understanding how radiofrequency radiation interacts with biological molecules.
Ronald F. Yatteau · 1970
This 1970 case report documented the first known instance of radar interference causing a cardiac pacemaker to malfunction. The study examined how electromagnetic fields from radar systems could disrupt the electronic circuits in implanted medical devices, leading to potentially life-threatening failure of the pacemaker's demand function.
Yagi, K. · 1970
This 1970 study examined how microwave radiation exposure affected bone marrow tissue in rabbits, specifically looking at the development of aplastic anemia (where bone marrow fails to produce blood cells). Researchers used detailed tissue analysis techniques to document the cellular changes that occurred in bone marrow after microwave exposure.
N. A. D'yachenko · 1970
This 1970 study investigated cardiovascular health problems in radar operators and explored whether physical exercise could prevent these work-related disorders. The research focused on occupational health measures for workers exposed to radar emissions, recognizing early concerns about electromagnetic field effects on heart function.
Don D. Irwin et al. · 1970
This 1970 study demonstrated that time-varying magnetic fields can stimulate cardiac muscle and other biological tissues just as effectively as direct electrical stimulation. Researchers used frog muscle to show that magnetic fields could induce the same electrical responses that normally require electrodes, confirming that changing magnetic fields create electrical currents in living tissue.
King GR, Hamburger AC, Parsa F, Heller SJ, Carleton RA · 1970
This 1970 study examined how microwave ovens interfere with implanted cardiac pacemakers, investigating electromagnetic compatibility issues between common household appliances and life-sustaining medical devices. The research addressed early concerns about whether microwave radiation could disrupt pacemaker function, potentially causing dangerous heart rhythm problems in patients with these implanted devices.
Fofanov, P.N., et al · 1969
This 1969 Soviet technical report examined cardiovascular changes in workers exposed to microwave radiation on the job. The study represents early occupational health research documenting biological effects from workplace microwave exposure. This research contributed to understanding how microwave radiation affects blood circulation and heart function in humans.
J. E. FENN · 1969
This 1969 study investigated whether pulsed electromagnetic energy could affect experimental hematomas (blood clots or bruises) in rabbits. The research used a device called Diapulse to deliver controlled electromagnetic therapy to study healing effects. This represents early scientific exploration of electromagnetic fields as a potential medical treatment.
HELEN B. TAUSSIG · 1969
This 1969 research examined lightning strike fatalities and the potential for successful resuscitation using artificial respiration techniques. The study explored medical approaches to reviving lightning strike victims who appeared clinically dead. Lightning represents one of nature's most extreme electromagnetic field exposures, delivering millions of volts in microseconds.
Mumford WW · 1969
This 1969 study examined how environmental heat affects safe RF radiation exposure limits for humans. Researchers proposed reducing the standard 10 mW/cm² safety guideline by 1 mW/cm² for each point above 70 on the temperature-humidity index. The study recognized that hot, humid conditions make the body less able to handle additional heat from RF radiation.
J. C. Keesey, F. S. Letcher · 1969
This 1969 Naval Medical Research Institute study examined how much electrical current from power lines (50-60 Hz) causes measurable responses in humans. Researchers found that 1% of people can perceive currents as low as 0.1-0.5 milliamps, while 99% of adult males can release their grip at 9 milliamps before losing muscular control.
William E. Elzinga · 1969
This 1969 research developed an animal model for studying heart attacks by using iron particles and magnets to create controlled coronary thrombosis (blood clots blocking heart arteries). The study aimed to create a reproducible experimental method for inducing myocardial infarction in laboratory animals. This represents early research into using magnetic fields and magnetic materials to manipulate biological processes in controlled laboratory settings.
William Walden Mumford · 1969
This 1969 study examined how heat stress affects the body's ability to handle radiofrequency radiation. Researchers found that the standard safety limit of 10 mW/cm² should be reduced by 1 mW/cm² for every point above 70 on the temperature-humidity index. The findings suggest that hot, humid conditions make RF radiation more dangerous to human health.