Why Am I Not Sleeping? A Root-Cause Guide to Insomnia — and What Actually Works

Insomnia has many possible causes — identifying yours is the first step to real treatment.

If you've ever lain awake doing math about how many hours of sleep you'll get "if I fall asleep right now," you're in enormous company. Roughly a third of adults report insomnia symptoms, and about 10–15% have insomnia significant enough to be a diagnosable disorder. But "insomnia" isn't one thing — it's a symptom with several very different underlying drivers, and the right fix depends heavily on which one (or two) apply to you.

This guide walks through the most common root causes, and then through what the evidence actually supports for treating each one — including where supplements genuinely help, where they don't, and why the single most effective treatment for chronic insomnia isn't a pill at all.

Six common reasons sleep falls apart

1. Sleep apnea — a breathing problem, not just a sleep problem. Loud snoring, witnessed pauses in breathing, morning headaches, and daytime sleepiness despite "enough" hours in bed all point here. Sleep apnea is one of the most common — and most frequently missed — causes of poor sleep. Sedative sleep medications can make it more dangerous, not less. The STOP-Bang screening tool your clinician can run with you predicts risk with 92–99% sensitivity.

2. Hormonal changes, especially perimenopause. Up to half of women report new or worsened insomnia in the years around the menopausal transition. Falling estrogen and progesterone are directly linked to fragmented sleep, and hot flashes and night sweats frequently trigger the awakenings themselves. Airway collapsibility also increases as hormones decline — which is part of why sleep apnea risk rises in this same window.

3. Stress-reactive ("hyperarousal") insomnia. The classic "tired but wired" pattern — exhausted at bedtime, but your brain won't power down, or you snap awake at 2–4am with a racing heart. This is a recognized clinical pattern, not a personal failing, and it responds specifically to arousal-reduction techniques.

4. Anxiety and mood. Anxiety and depression are both common causes of insomnia and, in turn, are worsened by it. If racing thoughts about problems or your to-do list specifically keep you up, this is worth screening for directly — a quick GAD-7/PHQ-9 with your clinician takes minutes.

5. Circadian rhythm and behavior. An irregular bed/wake schedule, screens before bed, long or late naps, and shift work or time-zone travel all delay or fragment the body's sleep signal. This is often the easiest domain to start improving.

6. Diet, alcohol, and medications. Alcohol within a few hours of bedtime, heavy late meals, afternoon caffeine, and certain prescription medications (beta-blockers, steroids, some antidepressants) are well-documented sleep disruptors. Alcohol in particular fragments sleep architecture even though it feels sedating going down.

Most people have more than one of these at once — which is exactly why a single generic "sleep hygiene" tip sheet often isn't enough.

The most effective treatment isn't a medication

Whatever the mix of causes, Cognitive Behavioral Therapy for Insomnia (CBT-I) is the guideline-recommended first-line treatment for chronic insomnia — not sleeping pills. This is the formal position of both the American College of Physicians and the American Academy of Sleep Medicine, and a large body of research shows it outperforms medication over the long run, with none of the drug side effects or dependency risk.

CBT-I isn't talk therapy about your feelings. It's a structured, skills-based program, usually delivered over 4–8 sessions (in person, by telehealth, or through a guided app), built from five components:

Sleep restriction. Counterintuitive, but it's the most powerful piece. You temporarily limit time in bed to roughly match the amount you're actually sleeping — if you're in bed 8 hours but only sleeping 5.5, you start with about a 5.5–6 hour sleep window. This builds "sleep pressure," so you fall asleep faster and sleep more solidly, and the window is gradually extended as sleep improves.

Stimulus control. The goal is retraining your brain that bed means sleep — not scrolling, worrying, or lying awake. In practice: go to bed only when sleepy; if you're not asleep within about 20 minutes, get up and do something quiet in low light until sleepy again; use the bed only for sleep (and sex); get up at the same time every day, even after a bad night.

Cognitive restructuring. This targets the anxious thoughts that keep the brain alert at night — "I'll be useless tomorrow," "I'll never fix this." Identifying and reframing these thoughts lowers the mental alarm system that's fundamentally incompatible with falling asleep.

Relaxation training. Paced breathing, progressive muscle relaxation, body scans — practiced regularly, not just at bedtime — to lower physiological arousal. This piece maps directly onto the "tired but wired" stress pattern above.

Sleep hygiene education. The familiar basics (consistent wake time, light exposure, limiting caffeine/alcohol/screens) are included, but on their own they're the weakest part of CBT-I. They work best as a foundation under the other four components, not as a stand-alone fix.

You don't need to track down an in-person sleep specialist to start: ask your clinician about telehealth-delivered CBT-I or a guided CBT-I app.

Prescription medications: what's actually true about addiction, timing, and duration of use.

Sleep medications are real tools, not villains — but each class works differently, and "just take a sleeping pill" glosses over real differences in how long they last, whether they help you fall asleep or stay asleep, and how much dependence risk is actually involved.

A quick vocabulary note: Physical dependence (withdrawal symptoms if you stop suddenly) and tolerance (needing more for the same effect) are pharmacological realities of GABA-acting drugs (benzodiazepines and Z-drugs) — they are not the same as addiction (compulsive use despite harm), but they're exactly why these drugs are Schedule IV controlled substances and why guidelines say short-term.

Zaleplon (Sonata) — Ultra-short (~1 hr). Falling asleep only. Schedule IV; real dependence risk. Boxed warning: complex sleep behaviors. Short-term only.

Zolpidem (Ambien, Ambien CR) — Short (IR 2–3 hr; CR up to ~6 hr). Falling asleep (IR) + staying asleep (CR). Schedule IV; risk rises with dose/duration. Boxed warning; next-day impairment; lower starting dose for women. Short-term.

Eszopiclone (Lunesta) — 5–7 hr half-life. Falling asleep + staying asleep. Schedule IV. Boxed warning; metallic taste; next-day driving impairment. Shortest necessary time.

Triazolam (benzodiazepine) — Very short (~2–4 hr). Falling asleep only. Higher dependence/rebound risk; Schedule IV. Amnesia, rebound insomnia. Short-term only (~2 weeks).

Temazepam (benzodiazepine) — Intermediate (~8–15 hr). Falling asleep + staying asleep. Schedule IV. Daytime sedation, fall risk. Short-term only.

Suvorexant (Belsomra) — DORA — Long (~12 hr). Staying asleep + falling asleep. Schedule IV; low abuse liability; no withdrawal. Next-day sleepiness, headache. Studied to 12 months.

Lemborexant (Dayvigo) — DORA — Longest DORA (~17–19 hr). Staying asleep + falling asleep. Schedule IV; low abuse potential. Somnolence; highest next-day effect of the three DORAs. Studied to 12 months.

Daridorexant (Quviviq) — DORA — Shortest DORA (~8 hr). Falling asleep + staying asleep. Schedule IV; modest misuse potential. Mildest next-day profile of the three. Studied to 12 months (2022).

Ramelteon (Rozerem) — Short (~1–2.6 hr). Falling asleep only. Not controlled; no dependence or rebound. Dizziness, fatigue. Can be used longer-term.

Low-dose doxepin (Silenor, 3–6mg) — Acts as targeted antihistamine at this dose. Staying asleep; early-morning awakening. Not controlled; no tolerance/rebound even after 12 weeks. Headache, somnolence, nausea. AASM-recommended; longer-term use supported.

Trazodone (off-label) — Variable (~5–9 hr). Marketed for staying asleep. Not controlled; low addiction potential. Next-morning grogginess, orthostatic hypotension. Not recommended by AASM or ACP — modest benefit doesn't outweigh side effects.

OTC antihistamines (diphenhydramine, doxylamine) — Long (~9 hr). Falling asleep (weak evidence). Tolerance within days; anticholinergic reliance. Dry mouth, confusion, urinary retention; linked to dementia risk in older adults. AASM recommends against use for insomnia.

The bottom line: medication works best as a bridge when CBT-I isn't accessible or hasn't fully worked — not as the default first step. Lowest effective dose, shortest necessary time, periodic reassessment. Benzodiazepines and Z-drugs should be tapered gradually, not stopped abruptly.

Where supplements fit in

Supplements are genuinely useful for some people, but the evidence quality varies a lot by ingredient.

Melatonin (0.5–5mg, 30–60 min before bed) — RCTs show reduced time to fall asleep and modestly more total sleep. Best for circadian/timing-driven insomnia. Available through your Fullscript dispensary.

Magnesium glycinate (200–400mg, evening) — RCTs and meta-analyses show improved sleep quality, especially with low magnesium status. Best for general/stress-related sleep difficulty. Available as Rest and Restore through Fullscript.

L-theanine (100–200mg, evening) — Small RCTs show improved sleep quality without sedation. Best for anxiety-linked, racing-mind insomnia. Available as L-Theanine Chewables through Fullscript.

Ashwagandha (≥600mg/day standardized extract, ≥8 weeks) — Meta-analysis of 5 RCTs (n=400) found a real, if modest, benefit — strongest at this dose/duration in diagnosed insomnia. Best for stress-reactive ("hyperarousal") insomnia. Available as Ashwagandha 600mg (KSM-66) through Fullscript.

Valerian root — Genuinely mixed evidence: several meta-analyses show subjective improvement, but a 2024 umbrella review found no consistent benefit on objective sleep measures. Reasonable to try; keep expectations modest. Available as Valerian Root/Valerian Complex through Fullscript.

All DobroMed Online patients receive 15% off all Fullscript orders, plus an additional 5% off their first order.

Track your sleep objectively: Oura Ring 5

If you want to stop guessing and start seeing your actual sleep data — sleep stages, nighttime heart rate, breathing irregularities, and readiness scores — the Oura Ring 5 is the most clinically useful wearable for that purpose. It's the world's smallest smart ring (40% thinner than its predecessor), worn overnight like a regular ring, and now tracks over 50 health metrics including blood pressure signals and nighttime breathing patterns.

One important note: the Oura Ring is a wellness tracker, not a medical device. It can flag patterns worth discussing with your clinician — but it doesn't replace a proper sleep study for diagnosing conditions like sleep apnea.

As a DobroMed Online patient, you can order the Oura Ring 5 with 10% off directly through your Fullscript dispensary.

When to see a clinician rather than self-treat

Talk to a clinician before relying on sleep medication or supplements if you have loud snoring, witnessed breathing pauses, or unexplained daytime sleepiness (possible sleep apnea); if insomnia has lasted more than a few weeks; or if it's paired with low mood, panic, or significant life stress. These patterns deserve a proper evaluation, not just a stronger sleep aid.

Want to figure out which pattern fits you specifically? Our short, evidence-based Insomnia Root-Cause Self-Assessment walks through validated screening questions (including sleep apnea risk) and gives you a personalized breakdown of likely contributing factors — available in English, Russian, and Ukrainian.

Sources: Bastien et al., Sleep Med 2001; Chung et al. STOP-Bang validation studies, 2008–2022; Qaseem et al., ACP Clinical Practice Guideline, Ann Intern Med 2016; American Academy of Sleep Medicine Combination Treatment Guideline, 2025; Yeom & Cho, Psychiatry Investigation 2024; Cheah et al., PLOS ONE 2021 (ashwagandha meta-analysis); valerian umbrella review, Neuropsychopharmacology 2024; J Clin Med 2025 (perimenopausal sleep disturbance review).

Stay healthy! 💙

With care, your DobroMed Online team.

The best health decisions start with trustworthy information.