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Cancer & Tumors

Risk of pituitary tumors in cellular phone users: a case-control study.

No Effects Found

Schoemaker MJ, Swerdlow AJ · 2009

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This study found no link between cell phone use and pituitary tumors, even after 10+ years of use.

Plain English Summary

Summary written for general audiences

British researchers studied 291 people with pituitary tumors (small growths in a brain gland that regulates hormones) and 630 healthy controls to see if cell phone use increased tumor risk. They found no association between cell phone use and pituitary tumors, even among the heaviest users or those who had used phones for over 10 years. This suggests that cell phone radiation doesn't appear to cause this specific type of brain tumor.

Why This Matters

This study addresses an important gap in our understanding of cell phone radiation's effects on brain structures beyond the more commonly studied acoustic neuromas and gliomas. The pituitary gland sits deep in the brain and controls critical hormone functions, making it a logical target for investigation given EMF's documented effects on hormone systems. While this research found no increased tumor risk, it's worth noting the study period (2001-2005) captured relatively early cell phone adoption when usage patterns and radiation exposures were different from today's smartphone era. The science demonstrates mixed findings across different brain tumor types, with some studies showing increased risks for certain cancers while others, like this one, show no association. What this means for you is that the evidence remains complex and evolving, particularly as our exposure patterns continue to intensify with newer technologies.

Study Details

There is public concern and scientific interest regarding a potential effect of cellular phone use on the risk of developing intracranial tumors. Tumors of the pituitary gland have barely been investigated in this context, but are of interest because of their intracranial location.

We conducted a population-based case-control study between 2001 and 2005 of the risk of developing p...

Tumor risk was not associated with cellular phone use overall (adjusted odds ratio = 0.9, 95% confid...

We found no evidence that the risk of developing pituitary tumors is associated with cellular phone use for the induction time periods and intensities of use observed.

Cite This Study
Schoemaker MJ, Swerdlow AJ (2009). Risk of pituitary tumors in cellular phone users: a case-control study. Epidemiology. 20(3):348-54, 2009.
Show BibTeX
@article{mj_2009_risk_of_pituitary_tumors_3375,
  author = {Schoemaker MJ and Swerdlow AJ},
  title = {Risk of pituitary tumors in cellular phone users: a case-control study.},
  year = {2009},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/19279493/},
}
PubMed: 19279493

Cited By (20 papers)

Quick Questions About This Study

A 2009 British study of 291 pituitary tumor patients found no link between cell phone use and these hormone-regulating brain tumors. Even heavy users and those with 10+ years of phone use showed no increased risk compared to non-users.
Research shows no association between mobile phone radiation and pituitary adenomas. A case-control study comparing 291 tumor patients with 630 healthy controls found identical tumor rates regardless of phone usage patterns or duration of exposure.
Long-term cell phone use appears safe for pituitary glands based on current evidence. Users with 10+ years of cumulative phone use showed no increased pituitary tumor risk compared to non-users in this comprehensive British study.
Neither analog nor digital phones increase pituitary tumor risk according to research. The 2009 Schoemaker study analyzed both phone types separately and found no association with pituitary tumors for either technology, suggesting similar safety profiles.
Heavy cell phone users don't appear to develop more hormone gland tumors. Researchers found no increased pituitary tumor risk even among users in the highest quartile for total calls or hours of use over their lifetime.