Published Research on Health Effects of 4G LTE – Environmental Health Trust


 Published Research on 4G LTE

The fourth generation (4G) of cellular technology called Long Term Evolution (LTE) was launched without premarket safety testing for long term exposure. Published research has found adverse effects from exposure. 

The study Early‐Life Exposure to Pulsed LTE Radiofrequency Fields Causes Persistent Changes in Activity and Behavior in C57BL/6 J Mice  found behavioral changes in mice (Broom et al., 2019)

The study Long-term exposure to 4G smartphone radiofrequency electromagnetic radiation diminished male reproductive potential by directly disrupting Spock3–MMP2-BTB axis in the testes of adult rats – ScienceDirect found damage to the testes and reproductive potential in mice (Yu et al., 2019).  

The study Short-term radiofrequency exposure from new generation mobile phones reduces EEG alpha power with no effects on cognitive performance found a reduction to EEG alpha power (Vecsei et al., 2018).

The study Long-Term Evolution Electromagnetic Fields Exposure Modulates the Resting State EEG on Alpha and Beta Bands – Lei Yang, Qinghua Chen, Bin Lv, Tongning Wu, 2017 found modulation to resting state EEG on alpha and beta bands (Yang et al., 2017).

The study The alteration of spontaneous low frequency oscillations caused by acute electromagnetic fields exposure – ScienceDirect found alteration of spontaneous low frequency fluctuations induced by the acute LTE RF-EMF exposure (Lv et al., 2014). 

The study Modulation of resting‐state brain functional connectivity by exposure to acute fourth‐generation long‐term evolution electromagnetic field: An fMRI study – Wei – 2019 – Bioelectromagnetics – Wiley Online Library  published in Bio Electro Magnetics, found that acute LTE‐EMF exposure did modulate connectivity in some brain regions. The authors conclude that, “Our results may indicate that approaches relying on network‐level inferences can provide deeper insights into the acute effects of LTE‐EMF exposure with intensities below the current safety limits on human functional connectivity. In the future, we need to investigate the evolution of the effect over time” (Wei et al., 2018). 

The study The effect of 4.5 G (LTE Advanced-Pro network) mobile phone radiation on the optic nerve found that exposure to 4.5 G mobile phone radiation for two hours per day over a six week period caused significant damage to the optic nerve in rats. The authors concluded:

“The optic nerve transmits all visual information to the visual cortex, and any damage in this nerve can cause permanent and serious vision loss. This study demonstrated that RF exposure may be an environmental risk factor for eye toxicity and potential eye disorders. Further studies are needed to reveal the potentiality of the risk in this area.”

The study Exposure to 1800 MHz LTE electromagnetic fields under proinflammatory conditions decreases the response strength and increases the acoustic threshold of auditory cortical neurons | Scientific Reports found in adult male rats undergoing acute neuroinflammation, an exposure to LTE-1800 MHz with a local SARACx of 0.5 W/kg resulted in changes in neuronal activity. “In conclusion, our study reveals that a single head-only exposure to LTE-1800 MHz can interfere with the neuronal responses of cortical neurons to sensory stimuli. In line with previous characterizations of the effect of GSM-signal, our results show that the impact of LTE signal on neuronal activity varies according to the health state. Acute neuroinflammation sensitize neuronal responses to LTE-1800 MHz, resulting in altered cortical processing of auditory stimuli.” 


The study Electromagnetic pollution alert: Microwave radiation and absorption in human organs and tissues conducted tests in 1 GHz to 105 GHz system settings, covering most microwave frequency uses: 2.4 GHz of 4G-LTE, Wi-Fi, Bluetooth, ZigBee and the 5G ranges: 28 GHz of 5G-mmW and 95 GHz of 5G-IoT. Trial human organs and tissues were placed in the wave propagation direction of 2.4 GHz and 28 GHz dipole antennas, and a waveguide port operating from 95 to 105 GHz. The quantitative data on the effects of 5G penetration and dissipation within human tissues are presented. The absorbance in all organs and tissues is significantly higher as frequency increases. As the wave enters the organ-tissue model, the wavelength is shortened due to the high organ-tissue permittivity. Skin-Bone-Brain layer simulation results demonstrate that both electric and magnetic fields vanish before passing the brain layer at all three focal frequencies of 2.4 GHz, 28 GHz and 100 GHz.”