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What is the adult equivalent of SIDS? Understanding Sudden Adult Death Syndrome

According to the British Heart Foundation, sudden arrhythmic death syndrome (SADS) affects around 500 people in the UK each year. For those wondering what is the adult equivalent of SIDS, the term SADS or Sudden Adult Death Syndrome is often used to describe this tragic phenomenon. SADS is the sudden, unexpected death of an apparently healthy young person or adult where a comprehensive post-mortem fails to reveal a cause.