The present study aimed to investigate the effects of chronic low-intensity microwave exposure (900, 1800 or 2450 MHz for 180 days) on cognitive function, heat shock protein 70 (HSP70), and DNA damage in the rat brain. The results showed declined cognitive function, elevated HSP70 level, and DNA damage in the brain of microwave-exposed animals. The results indicated that, chronic low-intensity microwave exposure in the frequency range of 900 to 2450 MHz may cause hazardous effects on the brain.
Long-term exposure to Radio Frequency waves or microwave radiation has long been studied and shown to produce all sorts of adverse health effects. See my post on EMF Radiation Exposure Symptoms for a full list of common symptoms. Even the American Cancer Society, who in large part will not fully say that EMF radiation causes long-term harm, and instead errs on the side of not enough research, admits on their website, that:
10. Your house may be burglarized due to social media. “If you spend any time with social media, (Facebook, Twitter, etc.) You have probably found that you can “check-in” somewhere to let all your friends know what you’re up to, and maybe even stop by for coffee. But if your security settings on the social networks are not set properly, you could just as easily be telling robbers that your house is vacant right now, which they will find most helpful when they clean you out. Sometimes, they will come back in a couple of months, to get this stuff you bought with the insurance money, too. Occasionally, they will look for important documents to commit identity theft. All told, checking-in may be one of the most reckless cell phone safety errors we can commit.” – Cell Phone Safety Identity Theft and Cell Phone Security, About Money; Twitter: @AboutMoney
The microwave irradiation was performed at bands corresponding to mobile devices (GSM) using a modified AP5200 generator (D-LINK, China), operating in four bands (860–910 MHz frequency range, Pout 29 dBm), and to wireless router (WLAN) using a D-LINK wireless router 802.11 g/2.4 GHz (2.412–2.48 GHz frequency range, Pout 19 dBm). In the irradiation chamber there is one stick antenna placed in the center of the ceiling. The exposure levels where chosen in agreement with the microwave irradiation levels measured in open space for heavily used GSM networks (100 mW/m2) and for indoor WLAN (70 mW/m2) communication protocols.
In today's world, 2.45-GHz radio-frequency radiation (RFR) from industrial, scientific, medical, military and domestic applications is the main part of indoor-outdoor electromagnetic field exposure. Long-term effects of 2.45-GHz Wi-Fi radiation on male reproductive system was not known completely. Therefore, this study aimed to investigate the major cause of male infertility during short- and long-term exposure of Wi-Fi radiation.
Irradiation was performed during three weeks, after which plants were removed from the chambers for measurements of volatile organic compound (VOC) emission and analyses of leaf structure and essential oil content. All measurements of VOC emission and analyses of leaf structure and essential oil content have been replicated with eight different plants.
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The present study was undertaken to determine the influence of low intensity microwave radiation (900, 1800, or 2450 MHz for 2h/day, 5days/week, for 60 days) on oxidative stress, inflammatory response and DNA damage in rat brain. Low intensity microwave exposure resulted in a frequency dependent significant increase in oxidative stress markers, reduced levels of GSH and SOD, increased levels of pro-inflammatory cytokines, and significant DNA damage in microwave exposed groups compared to controls. In conclusion, the present study suggests that low intensity microwave radiation induces oxidative stress, inflammatory response and DNA damage in brain by exerting a frequency dependent effect. The study also indicates that increased oxidative stress and inflammatory response might be the factors involved in DNA damage following low intensity microwave exposure.

In the low dose, in the low intensity range we are dealing with biological effects which are clearly not linear to the SAR value, they are not linear to the energy transmitted and measured and communicated by the SAR value. So for the low intensity experiments, or the so called ‘athermal’ effects, we are very suspicious whether the SAR value is valid at all.”

This paper presents the results of a replication study performed to investigate earlier Soviet studies conducted between 1974 and 1991 that showed immunological and reproductive effects of long-term low-level exposure of rats to radiofrequency electromagnetic fields (continuous wave 2450 MHz for 7h/day, 5days/week for 30 days). The RF exposure resulted in minor increases in formation of antibodies in brain tissue extract and the exposure did not appear to be pathological. In addition, a study was conducted to replicate a previous Soviet study on effects from the injection of blood serum from RF-exposed rats on pregnancy and foetal and offspring development of rats, using a similar animal model and protocol. Our results showed the same general trends as the earlier study, suggesting possible adverse effects of the blood serum from exposed rats on pregnancy and foetal development of intact rats, however, application of these results in developing exposure standards is limited.
You’ll find no shortage of articles on the dangers of just about anything if you look around the Internet. Articles about how dangerous modern medicines are, how dangerous cell phones are, how dangerous cooking your food in a microwave is, and yes, how dangerous Wi-Fi is. People claim that Wi-Fi routers keep them awake at night, cause cancer, cause hyperactivity in children, and all manner of unsupported and nonsensical claims.
In one type of study, called a case–control study, cell phone use is compared between people with these types of tumors and people without them. In another type of study, called a cohort study, a large group of people who do not have cancer at study entry is followed over time and the rate of these tumors in people who did and didn’t use cell phones is compared. Cancer incidence data can also be analyzed over time to see if the rates of brain tumors changed in large populations during the time that cell phone use increased dramatically. These studies have not shown clear evidence of a relationship between cell phone use and cancer. However, researchers have reported some statistically significant associations for certain subgroups of people.
The aim of this study was to determine the structural changes in the frontal cortex, brainstem and cerebellum in the male rat brain due to electromagnetic wave exposure (900, 1800, 2450 MHz, 1h/day for 2 months). While the histopathological changes in the frontal cortex and brainstem were normal in the control group, there were severe degenerative changes, shrunken cytoplasm and extensively dark pyknotic nuclei in the EMR groups. Biochemical analysis demonstrated that the Total Antioxidative Capacity level was significantly decreased in the EMR groups and also Total Oxidative Capacity and Oxidative Stress Index levels were significantly increased in the frontal cortex, brainstem and cerebellum. Researchers concluded that EMR causes structural changes in the frontal cortex, brainstem and cerebellum and impairs the oxidative stress and inflammatory cytokine system. This deterioration can cause to disease including loss of these areas function and cancer development.

There is great variability in survival by brain tumor subtype, and by age at diagnosis. Overall, the 5-year relative survival for brain cancers diagnosed from 2008 through 2014 was 33.2% (49). This is the percentage of people diagnosed with brain cancer who will still be alive 5 years after diagnosis compared with the survival of a person of the same age and sex who does not have cancer.
Due to the relatively recent adoption of cell phones, the long-term safety of the technology cannot be determined conclusively and caution is warranted. Research on glioma brain tumors shows the average latency period is 20-30 years. [56] Although cell phones were introduced in 1983, it was not until 2003 that over 50% of the US population had a wireless subscription, so the 20 year mark for mass cell phone use has not yet been reached. [44] [71] The May 17, 2010 INTERPHONE study, the largest study ever to examine possible links between cell phones and brain tumors, concluded that overall there was "no increase in risk" for glioma or meningioma brain tumors, [57] but the average user in the study had less than eight years of cell phone exposure. [56] In his review of the INTERPHONE study results, Dr. Rodolfo Saracci stated that "none of today’s established carcinogens, including tobacco, could have been firmly identified as increasing risk in the first 10 years or so since first exposure." [58]
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An analysis of data from NCI's Surveillance, Epidemiology, and End Results (SEER) Program evaluated trends in cancer incidence in the United States. This analysis found no increase in the incidence of brain or other central nervous system cancers between 1992 and 2006, despite the dramatic increase in cell phone use in this country during that time (22).
Low frequency sound wave? what? They are HIGH frequency microwaves, AS IN THE SAME FREQUENCY YOUR MICROWAVE USES THAT HEATS UP FOOD! Please don’t be that guy that has no idea about this and tries to “debunk” something that is literally destroying people’s lives. – And it just simply BAFFLES me how you don’t even read the research done on the matter and boldly claim it has no effect! How ignorant and completely oblivious can one person be?!

The HPA's position is that “ frequency (RF) exposures from WiFi are likely to be lower than those from mobile phones.” It also saw “ reason why schools and others should not use WiFi equipment.”[4] In October 2007, the HPA launched a new “systematic” study into the effects of WiFi networks on behalf of the UK government, in order to calm fears that had appeared in the media in a recent period up to that time".[13] Dr Michael Clark, of the HPA, says published research on mobile phones and masts does not add up to an indictment of WiFi.[14][15]
Recent research has resurfaced concerns among scientists about a potential link between cell-phone radiation and cancer. But that research—a 10-year, $25 million government study in rodents—left a lot of key questions unanswered. That includes how relevant the findings are to newer wireless technologies such as Bluetooth and WiFi that have become widespread since the study was designed in the early 2000s.  
Wireless internet using durations: When we compare the wireless internet users regarding the duration of internet usage, there were a significant decrease of total motile sperm count and progressive motile sperm count (p = 0.032 and p = 0.033; respectively; Table 3) ... there were no significance among the semen parameters regarding the wired internet group (p = 0.128).
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We’ve rounded up 50 valuable tips from experts on mobile devices, wireless, safe Internet usage, and more to help you get the most from your cell phone. Play it safe by using your device when it’s safe to do so, avoiding calls and texts from anonymous numbers to steer clear of phishing and other scams, learn strategies for monitoring your kids’ cell phone use to stay on top of potential problems, and teach your kids about smart mobile usage.