HHS-OASH-2026-0397-4535 https://www.regulations.gov/comment/HHS-OASH-2026-0397-4535 My Personal Experience I am submitting this comment as an individual member of the public, sharing my personal experience and concerns about potential RF-EMF health effects. My health problems began gradually and eventually seriously impaired my daily life. I experienced severe sleep disturbances, headaches, visual disturbances, memory and concentration problems, cognitive fog, digestive issues, exhaustion, and anxiety. Medical examinations did not identify an explanation. Only after becoming ill did I begin investigating possible environmental causes and measuring RF-EMF levels in my apartment. The measurements revealed levels approximately 1,000 times higher than at my parents' home in a remote location. Through this investigation, I identified a mobile phone base station on a neighboring building as the apparent main source. I subsequently confirmed the installation date directly with the telecom operator and learned that it preceded the development of my symptoms. After installing shielding curtains, my measurements showed levels approximately 500 times lower than before. Within two days, my headaches and digestive symptoms disappeared. My sleep, concentration, and general wellbeing subsequently improved substantially. Importantly, I did not identify the base station as a potential source until after I had become ill and begun investigating possible causes. My initial symptoms therefore preceded my identification of the suspected source. I recognize that this sequence of events cannot by itself prove causation, but the chronology, measurements, and subsequent improvement convinced me that RF-EMF exposure deserved serious investigation. Similar Experiences Reported by Others My experience is not unique. A 2024 review published in Reviews on Environmental Health summarized seven Swedish case reports involving 16 people who developed various symptoms shortly after nearby 5G base stations were installed. Reported symptoms included sleep disturbances, headaches, fatigue, concentration and memory problems, anxiety, and cardiovascular complaints. The authors reported that symptoms often diminished after the individuals moved away from the exposure. Although case reports cannot establish causation or determine how widespread these effects may be, I believe these observations warrant independent investigation. Reference: https://pubmed.ncbi.nlm.nih.gov/38889394/ My Concerns About RF-EMF After investigating the topic, I was shocked by the volume of peer-reviewed research reporting potential biological and health effects associated with RF-EMF. To help inform the public, I created https://emf-health.info/ to share research and information about electromagnetic fields and health. I am particularly concerned that exposure intensity alone may not adequately characterize potential health risks. Based on my experience, I believe pulsed and modulated signals deserve particular attention. HHS should investigate whether pulse characteristics, modulation, peak versus average exposure, and cumulative exposure influence biological responses, including at levels below current exposure limits. In particular, research should compare pulsed and continuous signals under appropriately matched exposure conditions. Potential effects on sleep, neurological and cognitive function, and general wellbeing deserve thorough investigation. Given the widespread use of wireless technology, even modest health effects, if established, could have significant public health consequences. Children and other potentially vulnerable groups deserve particular attention. My Request to HHS I respectfully ask HHS to conduct an independent, comprehensive review of the peer-reviewed evidence, including studies reporting adverse effects and studies finding no effects. Please investigate whether current exposure limits adequately account for pulsed and modulated signals, potential non-thermal effects, and cumulative real-world exposure. I also urge HHS to support independent research into possible health effects, identify gaps in existing knowledge, and consider practical measures to reduce unnecessary exposure where appropriate, particularly in environments occupied by children. I am not asking HHS to accept my personal experience or these case reports as scientific proof. I am asking that experiences like mine and the available scientific evidence be taken seriously and investigated impartially. Wireless technology has brought many benefits, but protecting public health must remain a priority. Please ensure that unresolved questions about RF-EMF safety receive the attention they deserve.