In early February 2026, officials with the NFL Players Association (NFLPA) announced that they began to monitor electromagnetic interference at Levi's Stadium in Santa Clara, California. This action followed concerns raised by players regarding the potential health impacts of electromagnetic fields (EMFs) generated by nearby electrical substations, which are integral to the local infrastructure. The substation, operated by Santa Clara's Silicon Valley Power, has been in place for over 30 years and is situated next to both the stadium and the 49ers' practice fields. Players noted an unusual number of injuries in recent seasons, leading to speculation that the EMFs could be a contributing factor. Notably, names like Christian McCaffrey and George Kittle, both key players for the San Francisco 49ers, have been affected by significant injuries, with theories of an EMF correlation gaining traction among fans and the media. However, despite the growing concerns, expert opinions have largely dismissed the idea that EMFs pose a serious risk. NFL Chief Medical Officer Allen Sills, along with other health officials, stated that there is currently no scientific evidence to support concerns linking EMFs to increased injury rates. The NFLPA's interest in this issue highlights a broader concern among athletes regarding health and safety in relation to environmental factors. Jalen Reeves-Maybin, the NFLPA President, emphasized the importance of obtaining more data on the matter amidst rising anxiety from players. In response to the mounting injuries and ongoing discussions, 49ers representatives, including CEO Jed York, have expressed skepticism, attributing the long-standing operation of the substation to a lack of evidence supporting an association with injuries. The team is continuing to explore various factors behind injury spikes, maintaining their focus on player safety.