LONDON — Researchers are continuing to investigate whether prenatal exposure to radiofrequency electromagnetic fields from wireless technologies has any measurable long-term effects on child development, while emphasizing that current human evidence remains limited and inconsistent.
The work forms part of a broader effort to evaluate potential health effects from non-ionizing radiation emitted by devices such as mobile phones and Wi-Fi equipment. Several reviews and research protocols published in 2026 have highlighted the need for larger, better-designed studies capable of tracking pregnancy outcomes and children's health over extended periods. Researchers said existing evidence has not established a causal relationship between prenatal exposure and adverse long-term health outcomes in humans.
A systematic review published in March by researchers from Universitas Diponegoro examined available studies on prenatal exposure to non-ionizing electromagnetic fields, including radiofrequency emissions from wireless devices and extremely low-frequency magnetic fields. The authors reported that findings across human and animal studies remain heterogeneous, with differences in exposure assessment, study design and outcome measures limiting firm conclusions. They concluded that additional high-quality prospective research is needed to clarify possible associations.
Separately, researchers have launched a systematic review and meta-analysis focused specifically on pregnancy outcomes and fetal development associated with non-ionizing electromagnetic waves from mobile phones and related wireless devices. According to the published protocol, the review will evaluate evidence from multiple international databases using predefined methods intended to reduce bias. Results are expected after completion of data collection and analysis later in 2026.
Experimental research continues alongside human observational studies. A study published in April in Scientific Reports examined repeated prenatal ultrasound exposure in mice and reported changes in some measures of memory performance and brain structure in the animal model. The authors said the findings were limited to preclinical research and should not be interpreted as evidence of comparable effects in humans without further investigation.
Other recent scientific reviews have likewise noted that animal studies have reported mixed findings, while evidence from human populations remains limited and subject to methodological challenges, including difficulties accurately measuring real-world exposure and accounting for other factors that may influence child development.
Major public health agencies have generally maintained that current evidence does not demonstrate confirmed adverse health effects from radiofrequency exposure within established safety limits, while continuing to support additional research as wireless technologies evolve. Researchers involved in the ongoing reviews said their work aims to strengthen the evidence base rather than resolve the question before the available data have been fully assessed.
