Basic Questions
History of Electromagnetic Field Issues
Electromagnetic Field Properties
- What are electromagnetic fields (EMFs)? What are electromagnetic waves?
- What is an electric field?
- What is a magnetic field?
- I would like to know the types of electromagnetic fields and their actions.
- Where EMF may be seen in nature?
- What are the units for electric and magnetic fields?
- When there are multiple sources of magnetic fields is the total strength of magnetic fields the sum of strength of each source?
- What is SAR (Specific Absorption Rate)?
- What is the unit of high-frequency electromagnetic fields?
Health Effects
- Does EMF have immediate adverse effects on our health?
- Do even weak EMFs accumulate in our body when exposed for a long time?
- If we live under transmission lines for a long time, does it adversely affect our health?
- I plan to buy a house near transmission lines? Is this OK?
- Do EMFs generated from PCs and TVs affect reproduction or foetuses? Is there any relation between such devices and eye problems?
- Does an IH stove adversely affect people nearby?
- Do microwave ovens adversely affect people nearby?
- Does a base station for mobile phone adversely affect residents living nearby for a long time?
- Does the static magnetic field, generated from railways and the bullet train, adversely affect our health?
- I have heard that there is a causal relation between EMF and electromagnetic hypersensitivity (EHS). Is this true?
- Are there any reports that show a causal connection between those who have occupational exposure to electromagnetic fields and disease?
- Does the electromagnetic wave produced by optical lines have any adverse effect on health?
- Does far-infrared ray emitted from heating appliances have any adverse effect on health?
- When I use an optical mouse for PC, I sometimes feel uncomfortable with my hand. Is this an effect of electromagnetic waves?
- Does infrared light emitted from remote controllers of television sets and others have any adverse effect on health?
- Do electromagnetic fields of magnetic necklaces have any adverse effect on health?
- Do electromagnetic fields of potential therapeutic devices have any adverse effect on health?
- Do electromagnetic fields of AC magnetic induction therapy apparatuses have any adverse effect on health?
- Is the safety secured against exposure to radiation (electromagnetic waves in broader meaning) with medical testing equipment, such as MRI, CT, and X-ray?
- Do electromagnetic fields of MRI (Magnetic Resonance Imaging) have any adverse effect on health?
- Do electrostatic fields and static magnetic fields have any adverse effect on health?
- I saw the article that said a librarian got sick in the library where the Electronic Article Surveillance (EAS) equipment is installed. Is it the effect of electromagnetic fields?
- Do the electromagnetic waves (electric waves) radiated from Tokyo Skytree have any adverse effect on health?
- Do the electromagnetic waves (electric waves) from an amateur radio tower have any adverse effect on health?
- Does a TV tower give any adverse effect on health of those who are living near it?
- Many men put their mobile phones in the pants pocket. Does it have any adverse effect on health?
- I sometimes have headache or feel sick after I talked on the mobile phone for long a long time. Is it an effect of electromagnetic waves (electric waves)?
- Do the electromagnetic waves (electric waves) emitted from mobile phones and smart phones have any adverse effect on health?
- Do electromagnetic fields of all-electric home have any adverse effect on health? I am wondering whether I should use electricity or gas.
- I use an electric blanket, carpet and sheet while sleeping. Do the electromagnetic fields of these have any adverse effect on health?
- Do the electromagnetic fields generated from home electric appliances have any adverse effect on health? What is a safe distance?
- Do we need not worry about the effect of electromagnetic fields when electric transmission lines are buried in the ground?
- I live surrounded by multiple home electric appliances. What is the comprehensive exposure to electromagnetic fields?
- Does exposure to low-frequency magnetic fields for long time have any adverse effect on health other than childhood leukemia?
- I have heard that the birth rate of girl increases if we are exposed to low-frequency electromagnetic fields for a long time. Is that true?
- I have heard that childhood leukemia may develop as a result of exposure to low-frequency magnetic fields for a long time. Is that true?
- If low frequency magnetic fields have a nervous stimulating effect, don’t they have any adverse effect on health?
- If we are exposed to very strong low frequency magnetic fields, what kind of symptoms do we experience?
- Do we need not consider health effect of electric fields?
- Which has more adverse effect on our health in the low frequency electromagnetic fields, electric fields or magnetic fields?
- I would like to know what I should bear in mind when building a new house in order to prevent electromagnetic fields from giving adverse effects on health.
- I am concerned about the fact that they conclude there is no effect of electromagnetic fields on health even though medical science is in the process of developing.
- When I attended the lecture sessions on electromagnetic fields, etc., I heard that some country recognized that electromagnetic fields were harmful. Is that true?
- I saw books that said electromagnetic fields have adverse effect on human body. Is that true?
- I have heard that electromagnetic fields have an adverse effect on the heart. Is that true?
- I have heard that electromagnetic fields give an adverse effect on cells when they pass through a gene of the cell. Is that true?
- Why the health effect of electromagnetic fields is evaluated by frequency level?
- I have heard that children’s use of cellular phones is restricted in foreign countries.
Regulations
- Does the government implement any regulations on EMFs generated from power facilities?
- Are there any EMFs (radio wave) limits on IH stoves and microwave ovens implemented by the government?
- Are there any EMFs (radio wave) limits for home electric appliances other than IH stoves and microwave ovens?
- Do any countries abroad regulate EMFs generating from power facilities?
- Does Sweden have very strict EMF control?
- If the risk of childhood leukemia incidence doubles with 0.4 μT or more, should the planned limit value be less than 0.4 μT?
- I have heard that there is no house under transmission lines in America. Is it because electromagnetic fields are dangerous?
- Why do the limit values for exposure to magnetic fields provided in the former ICNIRP guidelines (1998) vary by frequency? (100μT at 50Hz and 83μT at 60Hz)
- The reference levels for general public in the ICNIRP guidelines released in 1998 were revised in November 2010. The levels were relaxed from 100μT (for 50Hz) and 83μT (for 60Hz) to 200μT (for 50Hz and 60Hz). I would like to know the reason for the revision.
- What is the reason for the difference in contents between WHO Environmental Health Criteria (EHC) No.238 “Extremely Low Frequency Fields“ and Fact Sheet No.322 “Electromagnetic fields and public health: Exposure to extremely low frequency fields “?
- What is the difference between occupational exposure and exposure of general public used in international guidelines?
- What is the positioning of WHO information sheet?
- Is WHO a reliable organization?
- How are members of WHO task meeting selected?
- The use of electronic devices is restricted during take-off and landing of airplane. On what grounds is the restriction based on?
- We are no longer asked to keep our cell-phones turned off at hospitals. I would like to know the reason for that. I would also like to know the rule for using cell-phones inside the hospital.
Magnetic Field Reduction Measures
- How can the magnetic field be reduced?
- Are there any home electronics appliances with reduced electromagnetic fields?
- I have heard that it is effective to place bamboo charcoal near home electric appliances that generate electromagnetic fields. Does it work?
- Those who complain about electromagnetic hypersensitivity actually have a problem with their health. Does the government plan to support these people?
- I am electromagnetic hypersensitivity. Are there any ways to decrease the symptom?
Measuring Magnetic Fields
- Transmission lines and distribution lines generate a magnetic field. What intensity does the magnetic field have?
- What is the intensity of the magnetic field of a substation?
- How does the intensity of a magnetic field change according to the distance from transmission lines?
- What intensity does the magnetic field of home electric appliances have?
- Is EMF measurable?
- What organizations offer EMF measurement services?
- Does the Japan EMF Information Center (JEIC) offer EMF measurement services?
- What is the level of electromagnetic waves (electric waves) emitted from cellular phones and cellular phone base stations?
- When I measured the magnetic fields of an IH cooking device, a very high value was shown for the surface where pans and pots contact. Is that all right?
- I would like to know measuring principles and types of low-frequency magnetic fields measuring devices.
- Are there any standard methods to measure electromagnetic fields?
- How strong are the magnetic fields generated by linear motor cars (maglev trains) ?
- Do the electromagnetic fields around railway tracks exist only when Shinkansen is passing?
- Once I turn off the cellular phone, don’t electromagnetic waves (electric waves) occur at all?
- Are electromagnetic fields generated by antenna wire (feeder wire) of TV set?
- Why magnetic fields of a hair dryer are larger than other home electric appliances?
- The strength of magnetic fields generated from electric facilities such as transmission lines and distribution lines is said to be at the same level as that of home electric appliances. However, I think they should be considered differently because hour of use is different.
Other Frequently-Asked Questions
- Why ICNIRP guidelines set the reference value for the exposure limit for the general public to be five times as strict as that for the occupationally exposed population?
- Would you define the term "long-term effects" described in WHO Fact Sheet No. 322?
- As the size of a transmission tower or line increases, does the magnetic field intensity also become stronger?
- Do all home electric appliances generate an electromagnetic field? Does the electromagnetic field remain after the home electric appliance is turned off?
- I would like to know about EMF measurements from home electric appliances.
- Is it true that the more we use home electric appliances, the more we are exposed to EMF?
- I would like to know the health effects of EMF generated from home electric appliances. Has any safe distance been set?
- What is the difference between an IH stove and a radiant cooker?
- I have heard that study results on health effects from mobile phones will be released to the public. Do you know the time of release and the expected contents?
- My neighbour uses a wireless LAN in the house. Are there any health effects from the LAN?
- Would you name the regulations that control mobile phones, their base stations, and wireless LANs?
- I would like to know the intensity of EMF (radio frequency) generated from base stations for mobile phones. Could you measure EMF for us, or would you lend such a measurement instrument?
- I plan to build a solar power generation system on the roof of my house. Will the system have EMF health effects?
- Do hybrid cars and electric cars generate EMF? If so, what intensities of magnetic field do they have?
- What is electromagnetic (wave) hypersensitivity (EHS)?
- I may have electromagnetic hypersensitivity (EHS). Can a hospital diagnose my condition? What hospital department should I visit?
- Are there any concrete measures to protect ourselves from EMF?
- EMF protection products (EMF protection aprons, curtains, ferrite sheets for mobile phones, etc.) are sold on Internet websites. Are these effective?
- My PC screen flickers when a train passes nearby. Why does this happen?
- I have had an artificial pacemaker implanted recently. Can I have an MRI for diagnosis? Are there any points of caution?
- Will radio waves for mobile phones cause an artificial pacemaker to malfunction? What about IH stoves and airport gates?
- A nearby house emits an electromagnetic wave in the direction of my house. I also hear some scary sounds. I want to know the cause, so I can feel safe. How can I do this?
- Would you explain thinking intervention? Can current technology do it?
- Would you explain thinking tapping? My thinking is being tapped
- Is there any good use of electromagnetic fields for the human body, such as therapy equipment?
- I would like to know about the current state of cohort studies (epidemiological studies).
- I would like to know the difference between connection and causal relationship.
- I would like to know about hearing impairment caused by ultrasound.
- Does the food cooked by a microwave oven have any effect on our health?
- When the steel tower was constructed, no explanation was made to the residents. Don’t we have any other option but to leave as it is?
- In Japan, what research institutions investigate health effects of electromagnetic fields in Japan?