Plural of apnea; episodes where breathing temporarily stops, usually during sleep or medical conditions.
From Greek 'a-' (without) + 'pnoe' (breathing). Coined in medical terminology in the 19th century to describe the cessation of breath.
Sleep apnea affects millions of people worldwide, and untreated cases can strain the heart—which is why devices like CPAP machines have become so important for nighttime health.
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