Episode Summary
Executive Summary: The episode investigates a viral claim that the 49ers’ injury problems are caused by electromagnetic fields from a nearby substation. After tracing the theory to Peter Cowan and testing the evidence with scientists and injury data experts, the hosts find the substation explanation unsupported: the cited 2014 upgrade was for a different substation, EMF exposure levels discussed are far below safety limits, and the injury record is serious but not uniquely abnormal once properly analyzed.
Main Topics: The viral 49ers substation theory (Priority: 5/5): The show opens with the internet theory that a nearby electrical substation is emitting harmful electromagnetic fields that are causing the 49ers’ recurring injuries, turning a sports mystery into a science and data investigation. Peter Cowan’s origin story and measurements (Priority: 5/5): The episode traces the theory to wellness entrepreneur Peter Cowan, whose concerns about EMF exposure, oxidative stress, and collagen led him to measure fields near Levi’s Stadium and publish the viral post. Scientific assessment of EMF risk (Priority: 5/5): A radiation expert explains that the field levels cited are far below public exposure limits and that evidence from cell studies is inconsistent and not enough to prove harm in people, especially at the levels measured near the stadium. The weakness of the cited research (Priority: 4/5): The hosts scrutinize the papers Peter relies on and show problems such as poor exposure measurement, missing data, and correlation-not-causation errors, weakening claims that EMF causes oxidative stress or burnout. Fact-checking the 2014 substation claim (Priority: 5/5): Reporter Rose Rimla discovers the widely cited 2014 renovation was for a different substation, not the one next to the 49ers’ facility, undermining the key timeline used to link upgrades with injury spikes. Injury data and adjusted analyses (Priority: 5/5): An epidemiologist and NFL injury analyst explain that the 49ers are injury-prone but not uniquely so on raw totals; adjusted metrics make them look worse, yet the gap is not huge and other factors like coaching, workload, and randomness matter. The psychology of a satisfying scapegoat (Priority: 4/5): The episode concludes that the substation thrives as a ‘deep story’ because it offers a simple villain, but the more likely explanation is a mix of normal randomness, team decisions, and the realities of sports injuries.
Key Arguments: The substation theory became viral because it offers a single, emotionally satisfying explanation for repeated 49ers injuries, but the evidence does not support it. EMF levels measured by Peter Cowan are elevated relative to ordinary background levels but still far below public safety thresholds cited by radiation experts. Studies linking EMF to oxidative stress are mostly cell or animal studies; they are inconsistent and cannot establish that the stadium-area fields cause injuries in people. The studies Peter cites on workers near power lines and substations are methodologically weak because exposure was not measured directly and key sample counts do not reconcile. The 2014 construction/expansion story refers to a different substation than the one by Levi’s Stadium, so the timeline used to support the theory is incorrect. Raw injury counts do not show the 49ers as the worst team; adjusted metrics make them look worse, but not by enough to justify the substation claim. Other plausible explanations include coaching philosophy, workload, roster construction, and the inherent randomness of injuries in professional football. The WHO/IARC classification of extremely low-frequency magnetic fields as possibly carcinogenic is real, but the actual estimated cancer risk is small and not specific to the 49ers story.
Data Points: Views on Peter Cowan’s post: More than 22 million - The viral X/substack post accusing the substation of harming the 49ers Injured/unavailable 49ers players: Roughly 20 out of a 90-man roster - Current injury burden cited during the episode Typical home/couch exposure: About 1–2 milligauss - Baseline EMF exposure used for comparison Peter Cowan’s reading near the substation: 8.5–9 milligauss - His measured field level close to the facility Highest reading Peter reported: 50 milligauss - Measured at a feeder line near the stadium/substation area Public exposure limit cited: 2,000 milligauss - Radiation expert Ken Carapidis says 50 milligauss is far below this Threshold for visual effects: More than 50,000 milligauss - Exposure level where retinal stimulation/stars in eyes can occur in experiments Threshold for nerve stimulation: Hundreds of thousands of milligauss - Level where tingling/twitching may occur Possible cancer share attributed to EMF: About 1% to 4% of childhood leukemia - Research estimate mentioned for power lines/substations German estimate: About 6 cases in 13 million children - Rough estimate of childhood leukemia cases attributable to EMF Year of the original childhood leukemia study: 1979 - Early study linking proximity to power lines/substations and childhood cancer Year of substation expansion cited in viral theory: 2014 - The timeline the viral theory uses to align with injury spikes Duration of Peter’s post reaching viral scale: 500,000 views initially, later 22 million - Trajectory of the viral claim after publication Public safety limit comparison by 49ers management: 400 times less than unsafe zones - John Lynch’s public reassurance about the site Raw injury ranking over the decade: 49ers are above average, not #1 - Zachary Binney’s review of public NFL injury data Games lost due to injuries: Giants first, 49ers second - Adjusted injury impact ranking over the past decade
Pivotal Quotes: "This is a piece in the puzzle here." — Peter Anthony Cowan: Peter reacting to his EMF measurements near Levi’s Stadium and interpreting them as evidence for his theory "So 50 milligauss is higher than what's normally encountered. However, it is still below, much, much lower than the limit." — Dr. Ken Carapidis: Expert explanation that Peter’s measurements are not close to harmful exposure limits "Sometimes just happens and injuries just happen." — Dr. Zachary Binney: Final argument that randomness and ordinary sports factors can explain much of the injury pattern
Implications: The episode shows how viral science-sounding claims can spread from real concerns but rest on weak evidence. For listeners, it’s a reminder to check exposure, timing, and study quality before accepting a compelling scapegoat.
About Science Vs
There are a lot of fads, blogs and strong opinions, but then there’s SCIENCE. Science Vs is the show from Spotify Studios that finds out what’s fact, what’s not, and what’s somewhere in between. We do the hard work of sifting through all the science so you don't have to and cover everything from 5G and ADHD, to Fluoride and Fasting Diets.