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.
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7. Keep it locked. “Make sure that you have a secret PIN (personal identification number), a password, fingerprint setting or other security measures in place so that only you can access your phone.” – National Cyber Security Alliance, June is Internet Safety Month! The National Cyber Security Alliance (NCSA) and ConnectSafely Share Tips to Ensure Online Safety and Summertime Fun, PR Newswire; Twitter: @PRNewswire
There was no significant difference between sperm counts and sperm morphology excluding sperm motility, due to mobile phone usage period, (p = 0.074, p = 0.909, and p = 0.05, respectively). The total motile sperm count and the progressive motile sperm count decreased due to the increase of internet usage (p = 0.032 and p = 0.033, respectively). In line with the total motile sperm count, progressive motile sperm count also decreased with wireless internet usage compared with the wired internet connection usage (p = 0.009 and p = 0.018, respectively). There was a negative correlation between wireless internet usage duration and the total sperm count (r = −0.089, p = 0.039).
Morbidity and mortality among study participants who have brain cancer. Gliomas are particularly difficult to study, for example, because of their high death rate and the short survival of people who develop these tumors. Patients who survive initial treatment are often impaired, which may affect their responses to questions. Furthermore, for people who have died, next-of-kin are often less familiar with the cell phone use patterns of their deceased family member and may not accurately describe their patterns of use to an interviewer.
This is extremely controversial but we can’t ignore that plenty of animal models indicate that exposure to electromagnetic radiation increases the risk of tumor development. While human studies are rare, reports and case studies abound. One such case involves a young 21-year-old woman who developed breast cancer. What makes this case unique was that her family did not have a predisposition to breast cancer… and she developed the tumor right on the spot she carried her cell phone in her bra. 
And yet, a lot of people do use these, including people I know and respect. I see people on the subway playing Candy Crush, the cover of their folio-style wallet case folded back, all of their cards just flapping in the wind. And don’t just take my word for it: The Silk iPhone wallet case has nearly 2,000 reviews on Amazon with an average score of 4.5 stars. People not only use these cases—they love them!
Kids are a perceptive lot, and they won’t like it if they’re given a device that doesn’t look the part. Thankfully for them (and for your wallet), the Honor 7X looks the business, for a bargain price. It’s one of the first devices in the budget price range to come with a bezel-less design akin to the Galaxy S8 and iPhone X — at a fraction of the price.
“So what can you do? Straighten up, first of all, says Kenneth Hansraj, M.D., an orthopedic surgeon in Poughkeepsie, New York. And carry device at chest height with head up, chest open and shoulder blades back. Move just your eyes downward. And then, take a break. Your neck is not supposed to stay stuck in one position for a long period. If you’re reading on a tablet or phone, stop every so often to swivel and tilt your head — up and down, then side to side.” – 3 Dumb Things We Do with Smartphones, Good Housekeeping; Twitter: @goodhousemag
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.”