Key Takeaways

Many middle-aged folks might have an irregular heartbeat condition, especially if they don’t exercise

Low fitness levels were associated with a 52% increased risk of arrhythmias

People’s risk for an irregular heartbeat increased 4% to 9% a year, starting around age 50

THURSDAY, Aug. 28, 2025 (HealthDay News) — Middle-aged folks who don’t exercise are putting themselves at risk of life-threatening complex heartbeat irregularities, a new study says.

Adults 40 to 65 with low fitness levels had a 52% increased risk for irregular heartbeat disorders , also known as arrhythmias, according to findings presented Wednesday at the European Society of Cardiology’s annual meeting in Madrid.

Age also played a factor, with people’s risk rising as they advanced through middle age, r

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