What are AC Magnetic Fields?​

See below for basics on this type of EMF, including sources in your home and research into the health impacts from exposure.  For broader information on all the major EMF types, where they come from, health impacts, and what you can do about it, check out my free EMF 101 eBook.  

  • Produced by electrical current flow.  Any device or appliance that consumes electricity will produce an AC Magnetic Field.  The intensity or strength of the magnetic field is directly related to the power consumption of the device.  A more powerful device will produce a higher magnetic field. These fields usually remain close to their source (2-3 feet), but can travel several hundred feet in the case of high voltage power lines.  AC Magnetic Fields are considered low frequency electromagnetic radiation (5 Hz – 400,000 Hz)

  • Examples: Home wiring and wiring errors, power lines, electric baseboards, hot water heaters, cooking range, laptop transformer, electric motors

    1. Environmental magnetic fields inhibit the antiproliferative action of tamoxifen and melatonin in a human breast cancer cell line

      1. “…environmental‐level magnetic fields can act to modify the action of a drug or hormone on regulation of cell proliferation.”

        1. Translation: an AC magnetic field of 1.2 nanotesla (quite low for a modern home environment) can disrupt drugs and hormones that regulate cell growth.  Uncontrolled cell growth is synonymous with cancer.  

        2. https://onlinelibrary.wiley.com/doi/abs/10.1002/(SICI)1521-186X(1997)18:8%3C555::AID-BEM4%3E3.0.CO;2-1?casa_token=CFR6dpRWMiUAAAAA%3AicrNekLR_TEd6XMGTiSO6CxILq6C8z2WDNIqjTQ9NyTq61ODWhL-WMvN9FWsoOjXogdUjrjwJJQ9Hg&

    2. Brain cancer and occupational exposure to magnetic fields among men 

      1. “Our findings support the hypothesis that occupational magnetic field exposure increases the risk of glioblastoma multiforme.” 

        1. https://academic.oup.com/ije/article/31/1/210/655960

    3. ELF magnetic fields, breast cancer, and melatonin: 60 Hz fields block melatonin's oncostatic action on ER+ breast cancer cell proliferation

      1. “These results provide the first evidence that ELF frequency magnetic fields can act at the cellular level to enhance breast cancer cell proliferation [rapid increase] by blocking melatonin's natural oncostatic [cancer inhibiting] action.”

        1. https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1600-079X.1993.tb00491.x