To date, there are a few long-term studies, very few in humans and even fewer epidemiological studies, apart from the studies on laptops with small numbers of study subjects. It is also far too early to generate reliable figures at this time. However, there are indications that especially newborns, children, or adolescents are particularly vulnerable as has been presented in detail by the research teams of Nazırogˇ lu, Atasoy, Margaritis/ Panagopoulos, Orendacˇ ova, Othmann, Ozorak, Sangun, Shahin and Yuksel. The experiments were carried out with rats or mice, in some cases as long-term studies (up to 1 year). In this context, it is important to note that rats and mice used in laboratories have a life expectancy of perhaps two years. This at least allows us to infer that human children and adolescents have to be protected from possible increased risks. In the study of Margaritis et al. (2014), the authors point out that the exposure levels from Bluetooth (0.3 V/m) and Wi-Fi routers (here 2.1 V/m) showed greater effects than cell phone radiation sources with much higher field strengths. This may coincide with the findings of the papers by von Klitzing, which stated that the power-dependent pulse of 10 Hz (1 ms) from Wi-Fi routers triggered reactions. Kumari et al. observed in a study from 2012 that higher levels of ROS in the liver suppress antioxidant enzymes and that lower levels cause an increase. This could be a key to further mechanisms as to how or whether tissue damage occurs or perhaps not. Likewise, the polarization of RF radiation (Meena et al. 2014, Panagopoulos et al. 2015) should also receive additional attention.
They're ok, though there's a nasty chemical processing smell to the stickers. I'm still not sure they're worth what they're made of. No instructions, testimonials, or even a product insert label, when you get them in a pretty, smelly gold sleeve, though you don't really need instructions for stickers, lol. They're very durable and don't wear easily, despite pressure and contact w/ many surfaces & objects. The price increased $4 since I ordered them. That said, the designs on them are beautiful. I just don't understand what I paid for, & it would be nice if there were tests on devices like this, proving that they actually absorb or render harmless, various wireless frequencies, and at what range. If they were cheaper, I might order 2 more packs just to see if they made a difference if placed closer together in larger quantity. I have 3 on my laptop & have noticed a very slight reduction in sensitivity to EMF. I didn't notice this slight difference until I put 1 sticker where my right hand rests on the keyboard. I had originally placed 2 on the base of the laptop, 1 over the wifi card, & 1 over the processor, and it made zero difference. I left things like that for 2 weeks, before I decided to try putting one of the stickers on the keyboard area. I'm still not clear on whether or not I'd buy this product again, but like the seller, Crownstarqi, b/c they are sending me a few more stickers so that I can see if multiple stickers on more devices makes a difference. This is very kind of them, & they have great customer follow-up. -Account holder's progeny.
We requested semen for analyses from the male patients coming to our infertility division and also asked them to fill out an anonymous questionnaire. We queried their mobile phone and wireless internet usage frequencies in order to determine their radiofrequency-electromagnetic radiation exposure. A total of 1082 patients filled the questionnaire but 51 of them were excluded from the study because of azoospermia. 
There is only one legitimate method of measuring cell phone radiation recognized by every major health authority and government in the world as well as by the cell phone industry itself, referred to as "SAR". SAR testing measures the "Specific Absorption Rate" of radiation at multiple depths and locations on the head and body in order to quantify how much radiation is actually penetrating it with and without certain safety devices. You can see a SAR test of the R2L device by watching the video below.
While that’s all scary as heck, I think it’s everything we don’t know about EMF exposure that scares me the most. That, and how seldom EMFs are discussed. If it hadn’t been for my dear friend August Brice, a Tech Wellness Advocate, I don’t think I would have ever considered the safety hazards associated with everyday cell phone use. Or had any knowledge of the subject whatsoever. Let’s be real, this topic has certainly never appeared in the trending tab on Twitter, and I’ve yet to see it spark a viral video.
Joel Moskowitz (@berkeleyprc) of the University of California, Berkeley School of Public Health, US, says: “This is the largest technological experiment in the history of our species, with potential health risks we still know next to nothing about.” This view is shared by Denis Henshaw, professor of human radiation effects at Bristol University, UK, who said: “Vast numbers of people are using cell phones and this could be a time bomb of health problems.”