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Use Left Ear For Mobile Phone Warning

by Brett M. Christensen


Message supposedly endorsed by the “Apollo medical team” claims that mobile (cell) phone users should always use the left ear for calls because using the right ear will directly affect the brain. A later version, which circulates as a graphic, omits the medical team reference but maintains that using the right ear for mobile phone calls makes our brains more prone to mobile radiation.  

Brief Analysis

The claims in the message remain unsubstantiated. While there are genuine concerns about possible health risks related to mobile phone use, there is no evidence to suggest that using the left ear will in any way decrease such risks.


(Submitted, March 2013)

Lef ear mobile phone warning

Use only LEFT EAR when using Mobile Phones, and avoid using RIGHT EAR, as that makes our brain more prone to mobile radiation,PLease share this infp with your loved ones!!!!!!! SHARE

(Submitted, January 2006)

A warning from the FRNS


Please use left ear while using cell (mobile), because if you use the right one it will affect brain directly. This is a true fact from Apollo medical team. Please forward to all your well wishers

Use left ear for mobile calls


Detailed Analysis

I first began receiving submissions about this bogus “health warning” message in late 2005. The warning, which travels via email, blogs and social media posts, claims that mobile phone users should only use the left ear for making calls, supposedly to lessen the effects of exposure to cell phone radiation.

The message attempts to convince readers that using the right ear for mobile calls can directly damage the brain and it is, therefore, wiser to favour the left ear. Like other such warnings, the message does not include any external references to support its claims.

Not surprisingly, I have found no evidence to confirm the claims outlined in the message. The message includes a diagrammatical image apparently intended to add a degree of credibility to the information. Ironically, however, the diagram has no direct relevance to the spurious claim that using the left ear is preferable to using the right. Although the subject matter of this infographic does relate to possible dangers from mobile phone radiation, a closer examination reveals that it makes no reference at all to using the left ear in preference to the right. 
A small amount of web research based on the source information included on the graphic revealed that it was first published in June 2002 by the Graphics News website. The diagram simply summarizes in graphical form the findings of a study by scientists at Finland’s Radiation and Nuclear Safety Authority. A 2002 BBC news report offers more information about this study. The report notes that:

Scientists from the Radiation and Nuclear Safety Authority found that exposing human cells to mobile phone radiation damaged the blood-brain barrier – a safety barrier in the body that stops harmful substances in blood from entering the brain.

However, the report makes clear that the tests were carried out on human cells under precise laboratory conditions and at the time the report was published it was not known if the findings actually equated to genuine health concerns for phone users. Moreover, neither the Radiation and Nuclear Safety Authority study nor the BBC report mention anything about which ear, if any, is the safest to use.

Almost since the invention of the devices, there has been a long-running debate about the possible health effects of mobile phone use. A number of reports have raised genuine concerns about possible health risks from mobile phone radiation. However, no credible information that I have seen mentions any correlation between increased health risks and the habitual use of the right ear for mobile calls.

The message claims that the information is “a true fact from Apollo medical team” (as opposed, apparently, to a “false fact” ). However, I could find no information about an “Apollo medical team” other than references to the hoax message itself. If the information in the message had any validity, then the group that conducted the research would undoubtedly have published its findings via credible media such as scientific journals and medical websites. Thus, if the “Apollo medical team” was a real entity that actually did conduct a study about mobile phone radiation, then research should reveal at least some information about the team and its work. I suspect that the “Apollo medical team” reference was added to falsely imply some measure of endorsement from the Apollo Hospitals Group in India.

This message possibly originated as some foolish individual’s idea of a prank. Or, as with many other hoaxes, it may have been a deliberate attempt to spread misinformation and unnecessarily raise fear and alarm. Whatever the reason, it seems obvious that the perpetrator has used a blatant falsehood as the core claim in the message and then made a rather lame attempt to back it up by tacking on unrelated information stolen from another source.

Some years after the original version began circulating, a new, graphical version began appearing on Facebook. The new variant omits references to the “Apollo medical team” but nevertheless maintains that using your right ear for mobile phones makes your brain more prone to mobile radiation. Seven years on from the original, there is still nary a shred of evidence to back the claims in either version of the message.

Thus, forwarding or sharing these misleading “warning” messages will serve no useful purpose. While there are real concerns about possible health risks related to mobile phone use, there is no evidence to suggest that using the left ear will in any way decrease such risks. 

Importance Notice

After considerable thought and with an ache in my heart, I have decided that the time has come to close down the Hoax-Slayer website.

These days, the site does not generate enough revenue to cover expenses, and I do not have the financial resources to sustain it going forward.

Moreover, I now work long hours in a full-time and physically taxing job, so maintaining and managing the website and publishing new material has become difficult for me.

And finally, after 18 years of writing about scams and hoaxes, I feel that it is time for me to take my fingers off the keyboard and focus on other projects and pastimes.

When I first started Hoax-Slayer, I never dreamed that I would still be working on the project all these years later or that it would become such an important part of my life. It's been a fantastic and engaging experience and one that I will always treasure.

I hope that my work over the years has helped to make the Internet a little safer and thwarted the activities of at least a few scammers and malicious pranksters.

A Big Thank You

I would also like to thank all of those wonderful people who have supported the project by sharing information from the site, contributing examples of scams and hoaxes, offering suggestions, donating funds, or helping behind the scenes.

I would especially like to thank David White for his tireless contribution to the Hoax-Slayer Facebook Page over many years. David's support has been invaluable, and I can not thank him enough.

Closing Date

Hoax-Slayer will still be around for a few weeks while I wind things down. The site will go offline on May 31, 2021. While I will not be publishing any new posts, you can still access existing material on the site until the date of closure.

Thank you, one and all!

Brett Christensen,