8,700 Studies Reviewed. 87.0% Found Biological Effects. The Evidence is Clear.
Shield Your Body

Note: This study found no significant biological effects under its experimental conditions. We include all studies for scientific completeness.

Cancer & Tumors

Cell phone use and parotid salivary gland alterations: no molecular evidence.

No Effects Found

de Souza FT, Silva JF, Ferreira EF, Siqueira EC, Duarte AP, Gomez MV, Gomez RS, Gomes CC. · 2014

View Original Abstract
Share:

Cell phone use showed no detectable stress markers in parotid glands, but exposure levels weren't specified.

Plain English Summary

Summary written for general audiences

Researchers studied whether cell phone use causes stress-related changes in the parotid salivary glands (located near the ear where phones are held) by comparing saliva from 62 people's exposed and unexposed glands. They found no differences in cellular stress markers, protein levels, or salivary flow between the phone-exposed side and the opposite side, even when accounting for years of use or calling time.

Study Details

We investigated in the parotid glands whether cell phone use alters the expression of gene products related to cellular stress.

We used the saliva produced by the parotid glands of 62 individuals to assess molecular alterations ...

No difference was found for any of these parameters, even when grouping individuals by period of cel...

We provide molecular evidence that the exposure of parotid glands to cell phone use does not alter parotid salivary flow, protein concentration, or levels of proteins of genes that are directly or indirectly affected by heat-induced cellular stress.

Cite This Study
de Souza FT, Silva JF, Ferreira EF, Siqueira EC, Duarte AP, Gomez MV, Gomez RS, Gomes CC. (2014). Cell phone use and parotid salivary gland alterations: no molecular evidence. Cancer Epidemiol Biomarkers Prev. 2014 Apr 21.
Show BibTeX
@article{ft_2014_cell_phone_use_and_3000,
  author = {de Souza FT and Silva JF and Ferreira EF and Siqueira EC and Duarte AP and Gomez MV and Gomez RS and Gomes CC.},
  title = {Cell phone use and parotid salivary gland alterations: no molecular evidence.},
  year = {2014},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/24753545/},
}
PubMed: 24753545

Cited By (13 papers)

Quick Questions About This Study

A 2014 study of 62 people found no evidence that cell phone use damages parotid salivary glands. Researchers compared saliva from phone-exposed glands versus unexposed glands and found no differences in cellular stress markers, protein levels, or salivary flow rates.
Research shows years of cell phone use does not affect salivary gland protein levels. A study examining parotid glands found no differences in protein concentration between phone-exposed and unexposed sides, even when accounting for years of use or monthly calling time.
Cell phones do not cause detectable heat stress in parotid salivary glands according to molecular evidence. Researchers found no changes in heat-induced cellular stress proteins in glands exposed to phone radiation compared to unexposed glands on the opposite side of the head.
Holding a phone to your ear does not reduce salivary flow rate. A 2014 study measured parotid salivary flow from both phone-exposed and unexposed glands in 62 people and found no significant differences in saliva production between sides.
Parotid salivary glands appear safe from cell phone radiation based on molecular evidence. Research found no alterations in cellular stress markers, protein levels, or gland function when comparing phone-exposed glands to unexposed glands in the same individuals.