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A short educational YouTube video by Dr. Charles Mok explaining sleep apnea: defined as breathing pauses (typically ≥10 seconds) that lower oxygen levels. The speaker emphasizes high underdiagnosis (about 80% undiagnosed), gives prevalence estimates (~33% of women over 30; ~50% of men over 30), and lists morbidities associated with untreated sleep apnea (heart failure, stroke, some cancers, depression, weight gain, diabetes).










