Norwegian health authorities warn of brakkesyke as summer heatwaves strain athletes

As summer heatwaves grip Europe, Norwegian health authorities are warning of a seasonal affliction that could derail even the most disciplined diets: *brakkesyke*, a condition that strikes athletes and casual exercisers alike when they push too hard in extreme temperatures.
First reported by *Aftenposten* on Sunday, *brakkesyke*—literally "cramps sickness"—has become a recurring nightmare for Norway’s World Cup football team as they prepare for upcoming matches in Oslo and Greensboro. Veteran players, who have endured the condition before, are sharing strategies to mitigate its effects, though the exact causes remain under debate among sports scientists.
The syndrome typically manifests in the third and fourth weeks of intense training, when cumulative fatigue and dehydration combine with high ambient temperatures. Symptoms include severe muscle cramps, nausea, and in extreme cases, temporary loss of motor control. "It comes, and it can hurt," admitted one team physiotherapist, who requested anonymity. "But our veterans know how to manage it."
Norwegian sports medicine researchers are investigating whether *brakkesyke* is linked to electrolyte imbalances exacerbated by modern high-protein diets. A parallel study published in *Der Standard* on Sunday challenges the blanket advice to eliminate sugar entirely, suggesting that strict avoidance may backfire by increasing cravings and metabolic stress—factors that could indirectly contribute to cramping during exertion.
Meanwhile, public health officials in Estonia are sounding alarms about another summer health risk: the dangers of cold showers after intense exercise. A nutritionist quoted in *Postimees* warned that rapid cooling can trigger vasoconstriction, reducing blood flow to muscles already strained by heat and activity. "What feels refreshing can actually prolong recovery," the expert noted.
As temperatures across Scandinavia and the Baltics soar past 30°C, athletes and weekend warriors are being advised to prioritize gradual acclimatization, consistent hydration with balanced electrolytes, and avoidance of sudden temperature shifts. The Norwegian football team’s medical staff has reportedly increased sodium intake in players’ diets and shortened high-intensity sessions during peak heat.
While *brakkesyke* is not yet recognized as a formal medical diagnosis, its growing notoriety among competitive circles reflects broader concerns about athlete welfare in an era of intensifying heatwaves. Researchers are calling for standardized protocols to identify and treat the condition before it sidelines key players during critical competitions.
For now, the advice remains simple: listen to your body, respect the heat, and don’t let the pursuit of peak performance turn into a summer health hazard.
Follow us for live European news
- 3
- 2
- 2
- 2
- 2
- 1
- 1
- 1
- 1
- 1
- 1
2 further sources not geolocated




