Guides and explanations
Articles on Sleep Medicine
Educational content on insomnia, obstructive sleep apnea, snoring, tests and treatments, with links to scientific sources and editorial updates.


Sleep Medicine Book
Material for physicians and students, currently in development. Conceptual cover; PDF and purchase not yet available.
Melatonin and heart failure: what the studies really show
A preliminary study found an association between recorded long-term use and heart failure; a subsequent analysis neither confirmed a significant association nor proved safety.
REM sleep and health: study of 95 thousand people finds associations
A UK Biobank cohort study linked estimates of REM sleep to a lower incidence of 83 diseases, but does not prove that increasing REM prevents illness.
AD109 for sleep apnea: what the phase 3 trial showed
A randomised trial involving 646 adults evaluated an investigational oral combination for sleep apnea. See the results, adverse effects and study limitations.
Excessive daytime sleepiness: warning signs
Understand when excessive daytime sleepiness is a warning sign, which symptoms to watch for and when to seek medical evaluation.
Sleep apnea in women: signs and evaluation
Understand how sleep apnea can manifest in women, which signs to watch for and how clinical evaluation and a sleep study work.
Sleep hygiene: usefulness and limitations
Understand how habits and the environment can support sleep and why sleep hygiene alone does not replace evaluation of persistent insomnia.
COMISA: when insomnia and sleep apnea occur together
Persistent insomnia and obstructive sleep apnea can coexist. Learn what COMISA means, which signs to watch for and how the evaluation considers both conditions.
Night work and sleep: strategies and when to seek evaluation
Strategies to protect sleep when working at night, warning signs and when to seek medical evaluation for persistent sleepiness or insomnia.
Sleep apnea and cardiovascular health: evidence
Sleep apnea and cardiovascular health: understand the evidence, warning signs, evaluation and limitations of treatment studies.
Polysomnography: how it works and how to prepare
Understand how polysomnography works, what the test assesses, when it may be indicated and how to prepare using general guidance.
Persistent insomnia: evaluation and evidence-based treatments
Understand how persistent insomnia is evaluated and which treatments have the strongest evidence, including CBT-I, tests and judicious use of medication.
Snoring: when it may signal sleep apnea
Loud, frequent snoring, pauses in breathing and sleepiness may indicate sleep apnea. Learn which signs to watch for and how medical evaluation is carried out.
CPAP for sleep apnea: how it works and adapting to it
Understand how CPAP keeps the airway open in sleep apnea, how evaluation is carried out and what may help with safe adaptation to the device.
Obstructive sleep apnea: symptoms and evaluation
Understand the symptoms of obstructive sleep apnea and how clinical evaluation, polysomnography and home testing help with diagnosis.
