Effects of extremely low-frequency electromagnetic field on expression levels of some antioxidant genes in human MCF-7 cells.

This study adds important evidence to our understanding of how EMF exposure affects cellular defense mechanisms at the genetic level. The researchers used magnetic field strengths of 0.25 to 0.50 millitesla, which are actually quite strong compared to typical household exposures (most home appliances produce fields of 0.01 to 0.2 mT at close range). What's particularly noteworthy is that the intermittent exposure pattern produced the strongest genetic response, suggesting that the timing and pattern of EMF exposure may be as important as the intensity. The science demonstrates that even relatively short exposures can trigger measurable changes in how cells manage oxidative stress, which is a fundamental process linked to aging, cancer development, and numerous health conditions. While this was conducted on cancer cells in laboratory conditions, it provides biological plausibility for the growing body of research connecting EMF exposure to health effects through oxidative stress pathways.