A new study out of Amsterdam UMC has found that heading the ball during amateur football matches can temporarily raise blood markers associated with possible brain injury. The research, conducted in partnership with the Royal Dutch Football Association (KNVB), adds fresh weight to growing concerns about the long-term neurological risks of the sport — and raises important questions about how football is played and taught at every level.
18 hours Ago
What the Study Found
More than 300 male amateur football players took part in the research during competitive matches. Blood samples were taken before and after play, with scientists measuring specific biomarkers — the same biological indicators doctors use when assessing brain injury and dementia. The results showed a clear pattern: the more frequent and forceful the headers, the stronger the effect on these markers.
The good news, if it can be called that, is that blood marker levels returned to normal within 24 to 48 hours. But lead researcher Jort Vijverberg was careful not to read too much into that. Falling biomarker levels, he noted, do not necessarily mean any potential damage has fully healed.
"Repeated exposure to these acute effects could potentially lead to long-term damage over time," Vijverberg said. "It is not yet clear whether this plays a role in dementia, but the results are relevant for future policy on heading in football."
Neuroscientist Marsh Königs pointed out that while the Health Council had previously flagged higher dementia risks among professional footballers, the direct connection between heading and measurable brain markers had not been established — particularly among amateurs.
This study begins to fill that gap.
What Happens Next
The KNVB welcomed the findings as valuable scientific insights and acknowledged the need.
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