The short answer
The World Health Organization’s International Agency for Research on Cancer (IARC) classified radiofrequency electromagnetic fields as possibly carcinogenic to humans (Group 2B) in 2011. This category means the evidence is limited and not conclusive.
Multiple health authorities, including the FDA and WHO, currently state that there is no conclusive scientific evidence linking Bluetooth headphones to adverse health effects at consumer exposure levels.
A 2024 study published in Scientific Reports observed an association between prolonged Bluetooth headset use and a higher reported prevalence of thyroid nodules. Researchers state that more long-term studies are needed to better understand potential effects of radiofrequency exposure.
AUDR is not a medical professional and this post is not made to build fear.
What the research says right now
In 2011, the World Health Organisation’s International Agency for Research on Cancer classified radiofrequency electromagnetic fields as Group 2B, meaning “possibly carcinogenic to humans.” Group 2B is the classification for limited evidence, not conclusive evidence. The classification means the research is ongoing, not that the link is established.
The FDA and WHO both currently state that there is no conclusive scientific evidence linking Bluetooth headphones to adverse health effects at consumer exposure levels. That is the current official position, and it is based on the available body of research. But some studies also state there is not enough research or tests conducted.
“An observational association, not a proven causal link. More long-term studies are needed.”
Scientific Reports, 2024 (PMC11192738)
In 2024, a study published in Scientific Reports (PMC11192738) observed an association between prolonged Bluetooth headset use and a higher reported prevalence of thyroid nodules in participants. The researchers noted that this was an observational association, not a proven causal link, and called for more long-term studies. It is one study that is worth noting but also is not a verdict.
What some people are thinking about
Beyond the formal research, some people have started thinking more carefully about the number of wireless devices that are near their bodies throughout the day. A phone, a laptop, a smartwatch, and now even Oura rings. On top of all that, add wireless earbuds for eight or more hours a day. This is a relatively new pattern in human history and there is no long-term data on it yet at scale.
The question some people are asking is “has Bluetooth been proven dangerous?” and although there has not been proven research that states that, the question should be “do I need to have everything wireless, all day, given that the long-term research is still being done?” For some people, the answer to the second question is no, and wired is one small part of that personal choice.
That is a reasonable preference. It is not a medical claim.
A few things we are not saying
We are not saying you should throw out your wireless earbuds. Wireless works well for most people most of the time and is a genuine engineering accomplishment.
We are not saying wired earphones protect you from anything. They do not emit wireless signals and that is a fact, but we are not going to frame that as protection.
We are not saying we have answers that the WHO does not have. They have more researchers and better instruments. We have made a personal choice and we are explaining it honestly.
Why we went wired
We went wired because wired sounds better, the mic works better on calls, there is no battery to manage, and the cable we built lasts. The fact that wired earphones emit zero wireless signal is another feature among several that made us switch back to wired.
If you are here partly because of health curiosity, we hope this did not sound like marketing. It was not trying to be. We read the same research you did, we took it seriously, and we built something wired for a combination of reasons, this was one of them.
Some practical thoughts if this is on your mind
If you want to reduce Bluetooth exposure without changing everything, the most practical move is to use wired for your longest daily use cases: calls, podcasts, video meetings, music at your desk. That is typically six to ten hours per day. Use wireless for short stretches where a cable is genuinely in the way, like a workout or washing up. The difference in total daily exposure between those two patterns is significant.
Beyond that, the research will keep developing and the guidance from major health organisations is where to look when it does. We will keep watching it.
AUDR does not make medical claims regarding Bluetooth, wireless technologies, or consumer electronics. Wireless devices are generally considered safe by major health and regulatory organisations based on current evidence. References: World Health Organisation IARC Monographs Volume 102; FDA guidance on radiofrequency exposure; Scientific Reports (2024), PMC11192738; WHO fact sheets on electromagnetic fields and public health.