Summary by Utah Sports and Wellness

Link to Original Article:

Journal of Environmental Research, Volume 17 – November 2020. University of California, Berkeley. 73 References.


Authors studied whether cellular phone use was associated with increased risk of tumors:

  • 46 case-controlled studies were done involving a total of over 66,000 participants.
  • 37 studies were hospital based, while 9 studies were population based.
  • The tumors assessed included the brain, neck, parotid gland, melanoma, and testicular cancer.
  • The studies were done across multiple different countries among five continents.

With increasing use of cellular phones, concerns have risen over the carcinogenic effects:

  • Electromagnetic fields (EMF’s) are emitted from cellular phones.
  • Since 1999, observational epidemiologic studies have reported inconsistent findings on the association between cellular phone use and tumor risk.
  • A 2008 meta-analysis of 23 case-control studies concluded that mobile phone use was associated with an increased tumor risk.
  • A 2009 study reported that cellular phone use of 10 or more years doubled the risk of brain tumors.
  • In 2011, the World Health Organization (WHO) classified radiofrequency electromagnetic fields (RF-EMFs) associated with cellular phone use as possibly carcinogenic to humans.

These authors also note:

  • In the subgroup meta-analysis, cellular phone use with cumulative call time greater than 1000 h (about 17 min per day over a 10-year period) increased the risk of tumors by 60%.
  • Studies funded by the cellular phone industry showed a statistically decreased risk of tumors.
  • Cell phone use can also increase oxidative DNA damage.
  • Heating or microwave radiation from cellular phones can increase the risk.