Health Secretary Robert F. Kennedy Jr. has directed federal officials to examine whether radiofrequency radiation from mobile phones, wireless networks and related devices poses health risks, reopening a debate that has persisted for decades.
• The review is expected to assess current research on long-term exposure, including possible links to cancer, neurological effects and other health concerns.
• Radiofrequency energy is nonionizing radiation, meaning it does not carry enough energy to directly damage DNA in the way X-rays can.
• Major public-health agencies, including the World Health Organization and the U.S. Food and Drug Administration, say evidence has not established that everyday cellphone or WiFi exposure causes significant harm when devices meet safety standards.
• Some researchers argue that existing studies do not fully resolve questions about prolonged, low-level exposure and are calling for additional independent research.
• The review could examine whether current federal exposure limits remain adequate as wireless technology expands.
Officials have not indicated whether the investigation will lead to changes in safety guidance or regulations. Further findings are likely to attract close attention from scientists, technology companies and consumers.