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2. Are Noise-Canceling Headphones Harmful to Your Ears? - AOL

   www.aol.com/noise-canceling-headphones-harmful...

   Key Takeaways: As the FDA does not regulate headphone volume, it’s up to us to self-regulate our listening volume. Noise canceling headphones can help keep your volume within a safe range, so ...

3. Wireless device radiation and health - Wikipedia

   en.wikipedia.org/wiki/Wireless_device_radiation...

   Since at least the 1990s, scientists have researched whether the now-ubiquitous radiation associated with mobile phone antennas or cell phone towers is affecting human health. [1] Mobile phone networks use various bands of RF radiation, some of which overlap with the microwave range. Other digital wireless systems, such as data communication ...

4. ‘Does smartphone exposure cause brain cancer?’: Ask a doctor

   www.aol.com/news/does-smartphone-exposure-cause...

   Public fears of cell phone exposure were elevated after an early trial in 2008 found a correlation between glioblastoma (an aggressive malignant brain cancer) and acoustic neuromas, which Saphier ...

5. Absolute threshold of hearing - Wikipedia

   en.wikipedia.org/wiki/Absolute_threshold_of_hearing

   Absolute threshold of hearing. The absolute threshold of hearing (ATH), also known as the absolute hearing threshold or auditory threshold, is the minimum sound level of a pure tone that an average human ear with normal hearing can hear with no other sound present. The absolute threshold relates to the sound that can just be heard by the ...

6. Children in clinical research - Wikipedia

   en.wikipedia.org/wiki/Children_in_clinical_research

   Children in clinical research. In health care, a clinical trial is a comparison test of a medication or other medical treatment (such as a medical device ), versus a placebo (inactive look-alike), other medications or devices, or the standard medical treatment for a patient's condition. To be ethical, researchers must obtain the full and ...

7. Are cellphones a risk for cancer? Not likely, report says. - AOL

   www.aol.com/cellphones-risk-cancer-not-likely...

   What the research shows. The eleven researchers who authored the WHO review said it’s unlikely cellphone use increases the risk of glioma, a tumor in the brain or spinal cord. The researchers ...