This animal study exposed rats to a 1800 MHz electromagnetic field for 12 weeks and assessed hormones, sperm quality, and behavior. The abstract reports increased corticosterone, decreased thyroid-stimulating hormone, reduced sperm motility/viability, and increased anxiety-like behavior in exposed rats. Some hormonal changes reportedly persisted for at least 2 weeks after exposure ended, and the authors frame the results as indicating adverse endocrine, reproductive, and behavioral effects.