Note: This study found no significant biological effects under its experimental conditions. We include all studies for scientific completeness.
Effects of different mobile phone UMTS signals on DNA, apoptosis and oxidative stress in human lymphocytes
No Effects Found
Gulati, S, Kosik, P, Durdik, M, Skorvaga, M., Jakl, L., Markova, E., Belyaev, I. · 2020
Different 3G frequencies cause varying DNA damage levels, with 1977 MHz most harmful after just hours of exposure.
Plain English Summary
Summary written for general audiences
Researchers exposed human immune cells to three different 3G cell phone frequencies (1923, 1947, and 1977 MHz) for 1-3 hours to test for DNA damage and cellular stress. They found small but significant DNA damage that varied by frequency, with 1977 MHz causing the most harm, while other cellular damage markers showed no effects.
Exposure Information
Cite This Study
Gulati, S, Kosik, P, Durdik, M, Skorvaga, M., Jakl, L., Markova, E., Belyaev, I. (2020). Effects of different mobile phone UMTS signals on DNA, apoptosis and oxidative stress in human lymphocytes.
Show BibTeX
@article{effects_of_different_mobile_phone_umts_signals_on_dna_apoptosis_and_oxidative_stress_in_human_lymphocytes_ce2390,
author = {Gulati and S and Kosik and P and Durdik and M and Skorvaga and M. and Jakl and L. and Markova and E. and Belyaev and I.},
title = {Effects of different mobile phone UMTS signals on DNA, apoptosis and oxidative stress in human lymphocytes},
year = {2020},
doi = {10.1016/j.envpol.2020.115632},
}Quick Questions About This Study
Yes, this study found DNA damage varied significantly between UMTS frequencies, with 1977 MHz causing the most damage, 1947 MHz moderate damage, and 1923 MHz the least damage in human immune cells.
DNA damage was detected after just 1-3 hours of exposure to 3G UMTS signals, suggesting that even brief phone calls may cause measurable genetic effects in immune system cells.
The 1977 MHz UMTS frequency caused the maximum DNA damage in this study, while the 1923 MHz frequency caused the least damage, demonstrating frequency-specific biological effects.
No, the study found no effects on reactive oxygen species, cell death, cancer-related gene mutations, or pre-leukemic fusion genes, but did observe reduced RNA expression across all frequencies tested.
Because this research showed each UMTS frequency caused different levels of DNA damage, the authors concluded that every specific mobile communication signal requires separate testing to ensure public safety.