Please let us not go here again! Mobile phones do not cause dementia, brain damage, sterility, bipolar disorder, diabetes, "radiation poisoning", ADHD, autism, cancer, tooth decay, or poor fashion sense. There is no shortage of web sites where conspiracy theorists and other types who believe that eating a carrot that is not "organic" will kill you gather and salivate over the latest doom-and-gloom, "_____ causes ______" craze. None of these sites are reputable.
Just because it's on the internet doesn't make it true. Consider the source. Some people can design web sites that look official and have organization names that look legit, but they're not. I can make one up right now: NIMD (National Institute of Microwave-generated Disease)--don't you know they're a department of the NIH (National Institutes of Health)? NOT! (I have a great idea for the "official" logo.) Clarification: the NIH is real, the NIMD is not.
There'll be a bunch of links to "pseudo" studies based on "woo" science that will appear legit to people who aren't scientifically knowledgable enough to know better. They are about as legitimate as that National Inquirer issue that published "undeniable proof" that trump is actually Elvis Presley reincarnated.
Don't believe me? Ask Pancake Dave. He'll set you straight.