The energy levels associated with radiofrequency energy, including both radio waves and microwaves, are not great enough to cause the ionization of atoms and molecules. Therefore, RF energy is a type of non-ionizing radiation. Other types of non-ionizing radiation include visible light, infrared radiation (heat) and other forms of electromagnetic radiation with relatively low frequencies.
Although research is ongoing, the Food and Drug Administration (FDA) says that available scientific evidence—including World Health Organization (WHO) findings4 released May 17, 2010—shows no increased health risk due to radiofrequency (RF) energy, a form of electromagnetic radiation that is emitted by cell phones.
A number of studies have investigated the effects of radiofrequency fields on brain electrical activity, cognitive function, sleep, heart rate and blood pressure in volunteers. To date, research does not suggest any consistent evidence of adverse health effects from exposure to radiofrequency fields at levels below those that cause tissue heating.
Based on mixed epidemiological evidence on humans regarding an association between exposure to RF radiation from wireless phones and head cancers (glioma and acoustic neuroma), RF fields have been classified by the International Agency for Research on Cancer as possibly carcinogenic to humans (Group 2B). Studies to date provide no indication that environmental exposure to RF fields, such as from base stations, increases the risk of cancer or any other disease.
What about cell phone manufacturers? Do they provide any usage suggestions? Usually there are important fine prints buried in user manuals.
Google Nexus 5: “To comply with FCC/IC Rf exposure requirements a minimum separation distance of 0.49 inches (1cm) must be maintained between your body and the back of the phone.”
Samsung Galaxy S5: “For body-worn operation, this phone has been tested and meets FCC RF exposure guidelines when used with an accessory that contains no metal parts and that positions the mobile device a minimum of 1.0cm from the body.”
iPhone 5S: “To reduce exposure to RF energy, use a hands-free option, such as the built-in speakerphone, the supplied headphones, or other similar accessories. Carry iPhone at least 5mm away from your body to ensure exposure levels remain at or below the as-tested levels.”
A CNET viewer wired128 advises that:
The only time you can get a larger radio wave energy dose is if you are transmitting at higher power, which would be uploading data, at a time when the network will allow you high data rates. You should know when this happens. If you are doing that, take the phone out of your pocket and put it a few feet away from your body.
To sum up, if you are really worried about cell phone radiation, take FDA suggestion: 1. Reduce the amount of time spent using your cell phone. 2. Use speaker mode or a headset to place more distance between your head and the cell phone.
Or, you can use a Cell Spacer. The Cell Spacer was designed to put some distance between you and your cell phone. Adequate space between the phone and the head helps you to minimize the risks of harmful RF radiation.
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