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Effect of handheld mobile phone use on parotid gland salivary flow rate and volume

Bioeffects Seen

Authors not listed · 2012

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Heavy mobile phone users show measurably increased salivary gland activity on the side where they hold their device.

Plain English Summary

Summary written for general audiences

Researchers measured saliva production in the parotid glands (major salivary glands near the ears) of 142 people, comparing heavy mobile phone users to controls. Heavy users showed significantly increased salivary flow, blood flow, and gland volume on the side where they typically held their phone. This suggests mobile phone radiation creates measurable biological changes in tissues directly adjacent to the device.

Why This Matters

This study reveals something remarkable: your body is responding to mobile phone radiation in real time, creating measurable changes in the very tissues where you hold your device. The parotid glands sit right where most people place their phones during calls, and the science demonstrates these glands are working harder, producing more saliva, and experiencing increased blood flow in heavy users. What makes this particularly significant is that these aren't subtle laboratory findings requiring sophisticated equipment to detect. These are functional changes happening in your body every time you make a call. The reality is that if mobile phone radiation can alter salivary gland function, we need to seriously consider what other biological processes might be affected by chronic exposure to these devices held directly against our heads.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study
Unknown (2012). Effect of handheld mobile phone use on parotid gland salivary flow rate and volume.
Show BibTeX
@article{effect_of_handheld_mobile_phone_use_on_parotid_gland_salivary_flow_rate_and_volume_ce665,
  author = {Unknown},
  title = {Effect of handheld mobile phone use on parotid gland salivary flow rate and volume},
  year = {2012},
  doi = {10.1016/j.oooo.2012.03.001},
  
}

Quick Questions About This Study

Yes, this study found heavy mobile phone users had significantly increased salivary flow rate, blood flow, and gland volume in parotid glands on the side where they typically held their phone during calls.
Parotid glands are the largest salivary glands, located just in front of and below each ear. They sit directly adjacent to where most people hold their mobile phones during calls.
Researchers used a modified Schirmer test to measure unstimulated parotid salivary flow rate on both sides of the face in 142 individuals, comparing heavy users to control subjects.
Yes, the study found heavy mobile phone users had increased blood flow rate in parotid glands on the side where phones were frequently placed, along with increased gland volume.
Increased parotid gland activity suggests mobile phone electromagnetic radiation is creating measurable biological changes in tissues directly adjacent to where the device is held during use.