{"id":"HHS-OASH-2026-0397-7001","number":"7001","name":"Yael Stein","organization":"","posted":"2026-10-28T04:00Z","received":"2026-10-21T04:00Z","body":"Exposure to electromagnetic radiation at intensities lower than thermal safety standards has been associated with non-thermal biological effects  including damage to cells and DNA and changes in them. \nMy colleagues and I demonstrated severe and unique vascular calcification in the aortas of rats exposed to intermediate frequencies of 150–155 kHz in an animal model of chronic kidney disease. We thought that an irradiating device could remove calcium from cardiac valves, but the result was the opposite .\nWe repeated this study with ELF exposure to 50 Hz using cell phone chargers and found the same results but the data were not published. Two long-term RF exposure studies performed at the Ramazzini Institute and by the US Department of Health and Human Services National Toxicology Program (NTP) found clear evidence of an association between long-term low-intensity RF EMF exposure and tumors in the hearts (and brains) of male rats.\n\nHealth effects from exposure to chronic exposure, low levels of EMF exist, the following Preventive & Protective Measures are adapted from Recommendations published by international scientist groups; medical organizations; environmental protection and selfhelp activist groups. Many of these groups have called for lowering allowed EMF exposure levels and halting plans to expand exposure with 5G networks . An increase in distance and use reduction are important factors to reduce exposure and consequent health risks. Proximity is the most important factor in exposure. Radiation levels fall dramatically with distance from the source.\nA. The public realm.  Reduction of exposure from cell phone towers / antennas is technically possible and is carried out in some countries better than in others. Keeping long distance from kindergartens and schools is extremely important, since children are a more susceptible population to any environmental exposure; and distancing antennas from bedrooms, to avoid unnecessary and harmful exposure during sleep\n\n\nWireless utility meters and wireless devices in the public realm, while perhaps emitting low mean intensity levels of EMF, emit biologically important pulsed exposure that is more harmful, even at low measured intensities. Furthermore, EMF intensity measurements are often incorrect if performed using a measurement device that does not have the\nadequate measurement speed .\nAvoid use of Wi-Fi at school – always prefer safer wired technology that does not emit RF EMF.\nB. Exposure from personal devices. The most extensive and problematic exposure\ncomes from use of personal devices since they are closer to a body. Devices that emit pulsed waves are especially harmful even if the exposure intensity is not high. \nRecommendations on preventing health symptoms from EMF exposure. Distance wireless devices from your body:\nAvoid carrying cell phone on your body at all times. Reproductive organs, especially in pregnancy; the nervous system; and cardiovascular system are sensitive.\nWhen talking or texting, position the cell phone away from your body as far as possible, use speaker or an “air tube” wired headset (not Bluetooth).\nAvoid placing cordless home phones near you, especially when sleeping.\nDo not place a laptop or tablet device on your lap since these devices emit Radio Frequency radiation (RF EMF) like cell phones; it is especially important during pregnancy.\nDo not place a powered cell phone near you while you sleep.\nDo not charge a cell phone near your body. \nReduce use of emitting wireless devices in your home:\nPrefer use of corded home phones that do not emit RF radiation for most calls.\nConnect the internet router via Ethernet cables and turn off Wi-Fi.\nUse wired keyboard, mouse, etc.\nTurn Wi-Fi off when not in use (router and devices), especially at night.\nTurn off printers’ Wi-Fi feature since printers continuously emit very high levels of RFR.\n\nMinimize exposure:\nMinimize time of phone use. Prefer texting to long phone conversations.\nReduce use of streamed media on the cell phone; whenever possible download the\ncontent and then access it on “airplane mode”, with Wi-Fi and other modes (Bluetooth etc.) switched off, to reduce your exposure while handling the device.\nChildren should only use cell phones for emergencies since cell phone radiation penetrates deeper into their brains.\nAvoid using cell phone inside spaces that are surrounded by metal, when the signal is weak, or when moving at high speed, for example in vehicles or elevators. The cell phone emits higher radiation because in such places it makes a greater effort to connect to the antenna, or to connect to changing distant antennas (when moving).\nAvoid charging laptops while in use. When charging, use a 3-pronged grounded cable \n\nThe expected exposure effects of planned G5 antenna density: G5 networks would emit a 6-fold increased ambient radiation compared to current networks, and would require a thousand times as much electricity to power the networks.","attachments":["https://downloads.regulations.gov/HHS-OASH-2026-0397-7001/attachment_2.pdf","https://downloads.regulations.gov/HHS-OASH-2026-0397-7001/attachment_1.pdf"],"attachment_inventory":true,"withheld":false,"source":"https://www.regulations.gov/comment/HHS-OASH-2026-0397-7001","tags":["cancer-tumors","child-development","health-experiences","sleep-cognition","biology-metabolism","exposure-places","policy-standards","research-evidence"],"source_hash":"2c361e3e169e76d988a43148b827e6eaeb13fe343b224d0ba5466c56351ed8ba","slug":"cancer-tumors-comment-7001","classification":null,"forum_topics":["awaiting-review"],"primary_topic":"awaiting-review","forum_title":"Exposure to electromagnetic radiation at intensities lower than thermal safety standards has been associa…"}