Insomnia
The most common sleep disorder: what causes it, what perpetuates it, and what actually helps
~30%
of adults have symptoms
~10%
have chronic insomnia
70-80%
CBT-I success rate
2x
more common in women
Insomnia isn't just "not sleeping enough" — it's difficulty falling asleep, staying asleep, or waking too early despite adequate opportunity to sleep. The good news: it's highly treatable. The bad news: most people get the wrong treatment (pills instead of CBT-I).
Types of Insomnia
Acute (Short-Term) Insomnia
Days to weeks
Usually triggered by a specific event or stressor. Often resolves on its own when the trigger passes.
- Stress at work or home
- Jet lag or schedule changes
- Illness or pain
- Environmental disruptions
- Life events (divorce, job loss, bereavement)
Chronic Insomnia
3+ months, 3+ nights/week
Persists even after the original trigger is gone. Often maintained by learned behaviors and anxious thoughts about sleep.
- Conditioned arousal in bed
- Anxiety about sleep itself
- Maladaptive sleep behaviors
- Hyperarousal (can't "turn off")
- May have underlying conditions
What Causes & Perpetuates Insomnia
The "3P Model" explains why insomnia develops and persists:
The 3P Model of Insomnia
Predisposing
Genetics, anxiety tendency, light sleeper
+
Precipitating
Stress, illness, schedule change, trauma
+
Perpetuating
Behaviors that maintain the problem
=
Chronic Insomnia
Self-sustaining cycle
Perpetuating factors are the key target: Spending extra time in bed, napping to compensate, clock-watching, trying harder to sleep, and worrying about sleep all make insomnia worse. These behaviors are logical responses but counterproductive — and they're what CBT-I targets.
CBT-I: The First-Line Treatment
Cognitive Behavioral Therapy for Insomnia (CBT-I) is recommended as the first-line treatment by every major medical organization. It's more effective than sleeping pills long-term and has no side effects.
The Five Components of CBT-I
1. Sleep Restriction
Limit time in bed to actual sleep time, then gradually extend. Builds sleep drive and consolidates sleep.
2. Stimulus Control
Bed is for sleep only. Get out of bed if awake >20 min. Rebuilds association between bed and sleep.
3. Cognitive Restructuring
Identify and challenge unhelpful thoughts about sleep. Reduce sleep-related anxiety and catastrophizing.
4. Sleep Hygiene
Optimize environment and habits: consistent schedule, dark/cool room, limit caffeine and alcohol.
5. Relaxation Training
Techniques to reduce arousal: progressive muscle relaxation, breathing exercises, meditation.
Access to CBT-I: Digital CBT-I programs (like Sleepio, Somryst) are FDA-cleared and nearly as effective as in-person therapy. They're more accessible than finding a trained therapist. Some are covered by insurance or available through employers.
When CBT-I Isn't Enough
CBT-I is the gold standard, but it's not universally effective. Approximately 20-30% of patients don't respond adequately to CBT-I alone, and certain conditions require additional or alternative approaches.
Secondary Insomnia
Insomnia caused by another condition
When insomnia is a symptom rather than the primary problem, treating the underlying cause is essential:
- Sleep apnea — may present as insomnia; requires sleep study
- Chronic pain — pain management often needed alongside CBT-I
- Restless legs syndrome — may require medication
- Circadian rhythm disorders — require light therapy and/or melatonin
- Medication side effects — some drugs disrupt sleep architecture
Comorbid Conditions
When other factors complicate treatment
These conditions may require modified approaches or concurrent treatment:
- PTSD / trauma — may need trauma-focused therapy first
- Severe depression — sleep restriction may be contraindicated
- Bipolar disorder — sleep restriction can trigger mania
- Chronic fatigue syndrome — standard protocols may not apply
- Neurodegenerative conditions — altered sleep architecture
The clinical reality: Insomnia often coexists with other conditions, and the relationship is frequently bidirectional — poor sleep worsens other conditions, which in turn worsen sleep. A comprehensive evaluation by a sleep specialist may be warranted when standard CBT-I doesn't produce expected results, or when other sleep disorders are suspected.
Treatment Comparison
Insomnia Treatments: Evidence & Considerations
| Treatment | Evidence | Duration of Effect | Key Considerations |
|---|---|---|---|
| CBT-I | Strong | Long-lasting (years) | First-line treatment; addresses root cause; no side effects |
| Z-drugs (Ambien, etc.) | Moderate | Short-term only | Tolerance develops; dependency risk; next-day impairment |
| Benzodiazepines | Moderate | Short-term only | High dependency risk; not recommended for insomnia |
| Melatonin | Weak for insomnia | Timing shift only | Better for circadian issues than insomnia; dosing unclear |
| OTC antihistamines | Weak | Very short-term | Tolerance develops quickly; next-day grogginess; anticholinergic risks |
| Orexin antagonists | Moderate | Ongoing use | Newer class; may be safer than Z-drugs; expensive |
Why pills fail long-term: Sleeping pills can help in the short term, but they don't fix the underlying problem. When stopped, insomnia typically returns — often worse than before (rebound insomnia). CBT-I teaches skills that last.
✓ Key Takeaways
✓ Chronic insomnia is maintained by behaviors, not just the original cause
✓ CBT-I is the first-line treatment — more effective than pills long-term
✓ Digital CBT-I programs are accessible and effective alternatives
✓ Sleep restriction sounds hard but works by building sleep pressure
✓ Pills address symptoms, not causes — insomnia returns when stopped
✓ Trying harder to sleep makes insomnia worse