Cortisol & Sleep: Stress Hormones and Rest (2026)

Last reviewed: June 1, 2026 · Reviewed by the YourHealthier Science Team · Editorial Policy

You're exhausted but your brain won't shut off. You lie in bed for an hour, thinking about tomorrow's problems. You finally fall asleep at 1 a.m., wake up at 3 a.m. with a racing heart, and drag yourself through the next day on caffeine and willpower. Then the same thing happens tomorrow night.

This pattern has a name in clinical research: hyperarousal-driven insomnia. And the hormone most often driving it is cortisol — your body's primary stress hormone. When cortisol is elevated at the wrong time of day, sleep becomes physiologically difficult regardless of how tired you feel.

This article explains how the cortisol-sleep relationship works, why it becomes a self-reinforcing cycle, and what the research shows about breaking it, from behavioral strategies to the supplements with the strongest evidence.

How Cortisol and Sleep Are Connected

Cortisol and sleep exist in a tightly regulated feedback loop. When functioning normally, this system runs like clockwork. When disrupted, it spirals.

The Normal Cortisol Rhythm

In a healthy person, cortisol follows a predictable 24-hour pattern controlled by the hypothalamic-pituitary-adrenal (HPA) axis. Levels reach their peak within 30–45 minutes of waking, a phenomenon called the cortisol awakening response (CAR) — promoting alertness, energy, and motivation. From there, cortisol gradually declines throughout the day, reaching its lowest levels around midnight. This nadir coincides with the rise of melatonin, the hormone that signals sleep onset (Balbo et al., 2010, International Journal of Endocrinology).

Sleep onset itself actively suppresses cortisol secretion. Deep slow-wave sleep (SWS), concentrated in the first half of the night, is associated with the lowest cortisol levels of the 24-hour cycle. Conversely, awakenings during the night trigger cortisol pulses. This is why fragmented sleep feels so much worse than short-but-continuous sleep: each awakening restarts cortisol secretion, disrupting the restorative phases your body needs most.

What Happens When the Rhythm Breaks

Chronic stress, anxiety, shift work, and poor sleep habits can all flatten or invert this rhythm — keeping cortisol elevated when it should be dropping. According to a comprehensive review by Balbo, Leproult, and Van Cauter at the University of Chicago's Sleep, Chronobiology and Neuroendocrinology Research Laboratory, sleep deprivation and reduced sleep quality result in a "modest but functionally important activation" of the HPA axis. Even partial sleep restriction (sleeping 4–6 hours instead of 8) produces measurably elevated evening cortisol levels (Balbo et al., 2010).

This matters because high evening cortisol is both a cause and a consequence of poor sleep:

High evening cortisol → poor sleep: Cortisol promotes alertness and arousal. When it's elevated at bedtime, it counteracts melatonin, delays sleep onset, reduces slow-wave sleep, and increases nighttime awakenings. You feel "tired but wired", physically exhausted but mentally unable to disengage.

Poor sleep → higher cortisol: Each night of insufficient sleep nudges the next day's cortisol baseline slightly higher. Over weeks and months, this accumulates. The cycle becomes self-reinforcing and progressively harder to break without intervention.

How High Cortisol Affects Your Sleep Quality

Uma Naidoo, MD, director of nutritional and lifestyle psychiatry at Massachusetts General Hospital, explains that ashwagandha is typically taken as a capsule, powder, or liquid extract, and that its adaptogenic properties may help the body manage the physiological effects of everyday stress (Massachusetts General Hospital).

Elevated cortisol doesn't just make it harder to fall asleep, it degrades the quality of the sleep you do get in specific, measurable ways.

Reduced slow-wave sleep (SWS). Deep sleep — the most physically restorative stage, is particularly sensitive to cortisol. Even modest cortisol elevations suppress SWS duration and intensity. The result: you can sleep 7 hours and still wake up feeling unrested: the architecture of your sleep is distorted even if the duration looks fine.

Increased REM latency. Cortisol can delay the onset of REM sleep, which is critical for emotional regulation, memory consolidation, and cognitive processing. Chronic REM disruption is associated with mood instability, difficulty concentrating, and impaired learning.

More nighttime awakenings. Cortisol pulses during sleep promote brief arousals. You may not fully wake up, but these micro-awakenings fragment your sleep cycles and prevent the continuous deep sleep your body needs for recovery.

Earlier morning waking. If your cortisol curve shifts earlier, peaking at 4 a.m. instead of 7 a.m. — you'll wake prematurely and be unable to fall back asleep. This is a hallmark of stress-related sleep disruption and is physiologically distinct from age-related early waking. For related reading, see our article on magnesium glycinate for sleep.

Who Is Most at Risk

Certain populations face systematically higher cortisol-related sleep disruption:

Shift workers experience the most severe circadian cortisol disruption. A 2025 systematic review found that healthcare shift workers displayed raised evening cortisol, lowered morning peaks, and increased cardiovascular risk, a pattern directly linked to circadian misalignment.

People with chronic stress. Prolonged psychological stress, from work, caregiving, financial pressure, or relationship difficulties — keeps the HPA axis in a state of sustained activation. Over months, the normal cortisol rhythm flattens, with less morning spike and less nighttime suppression.

Women during hormonal transitions. Perimenopause, PMS, and postpartum periods can amplify cortisol reactivity. Estrogen normally helps modulate the HPA axis; when estrogen fluctuates or declines, cortisol responses become less regulated. For more on this connection, see our articles on ashwagandha for women and magnesium deficiency symptoms (which are more common in women).

People with anxiety or depression. Both conditions are associated with HPA axis dysregulation. Insomnia is present in approximately 75% of people with depression and 50% of those with generalized anxiety disorder, and cortisol dysregulation is a shared mechanism.

How to Break the Cortisol-Sleep Cycle

Breaking the cycle requires addressing both sides: lowering evening cortisol AND improving sleep quality. Most people get the best results from combining behavioral strategies with targeted supplementation.

Behavioral Strategies (Foundation)

Lock your wake time. The single most powerful thing you can do for cortisol rhythmicity is wake up at the same time every day, including weekends. Your cortisol awakening response calibrates to your wake time; inconsistency blunts it, leading to morning grogginess and evening elevation.

Morning sunlight exposure. Bright light within 30 minutes of waking amplifies the cortisol awakening response and helps it decline properly later. Ten minutes of outdoor light — even on cloudy days, is more effective than indoor lighting.

Limit evening stimulation. Screens, stressful conversations, intense exercise, and work emails within 2 hours of bedtime all raise cortisol. A consistent wind-down routine signals your HPA axis that it's safe to reduce arousal.

Limit caffeine after noon. Caffeine directly stimulates cortisol release. A cup of coffee at 3 p.m. can raise cortisol levels into the evening window when they should be declining. If you enjoy afternoon energy, mushroom coffee provides a lower-caffeine alternative with adaptogenic support.

Supplements with Evidence for the Cortisol-Sleep Connection

Supplements work best as additions to the behavioral foundation above, not replacements for it. Here's what the research supports, ranked by evidence strength:

Supplement	Primary Mechanism	Key Evidence	Best Timing
Ashwagandha (KSM-66)	Lowers cortisol via HPA axis modulation	27.9% cortisol reduction in 60-day RCT (Chandrasekhar et al., 2012)	Evening with dinner
Magnesium glycinate	GABA receptor activation + glycine-mediated temperature drop	Improved ISI scores in 155-person RCT (2025); Abbasi et al. 2012	30–60 min before bed
Glycine (standalone)	Lowers core body temperature via NMDA receptors	3g before bed improved sleep in multiple RCTs (Inose et al., 2024 systematic review)	1 hour before bed
Lion's mane	NGF stimulation, neuroplasticity	Trend toward reduced stress (p=0.051); primarily cognitive, not sleep-specific	Morning

The most evidence-backed evening protocol for cortisol-related sleep problems combines ashwagandha KSM-66 (300–600mg with dinner) and magnesium glycinate (200–400mg 30 minutes before bed). Ashwagandha addresses the cortisol side; magnesium addresses the sleep side. They work through non-overlapping pathways and have no known interactions. For detailed dosing, see our guides on ashwagandha dosage and magnesium glycinate dosage.

What Most People Get Wrong About Cortisol and Sleep

Three misconceptions keep people stuck in the cortisol-sleep cycle:

1. "I just need to relax more." Relaxation helps, but it doesn't directly lower cortisol. A 2018 meta-analysis found that meditation reduces cortisol by about 10–15% — meaningful but modest compared to pharmacological or targeted supplementation approaches. Telling someone with HPA axis dysregulation to "just relax" is like telling someone with insulin resistance to "just eat less", technically relevant but insufficient as a sole intervention.

2. "Melatonin will fix it." Melatonin addresses the timing signal for sleep onset but does nothing about high cortisol. If your problem is cortisol-driven hyperarousal, racing thoughts, physical tension, inability to "switch off" — melatonin won't help because it doesn't target the mechanism keeping you awake. Melatonin works for jet lag and circadian timing issues, not for stress-induced insomnia.

3. "I'll catch up on the weekend." Weekend sleep-ins don't reset cortisol rhythmicity. Research shows that "recovery sleep" after a week of restriction only partially normalizes cortisol patterns, and the variable wake times actually worsen circadian misalignment. Consistent daily timing matters more than total weekly hours.

Watch: A Neuroscientist Explains Cortisol and Sleep

Andrew Huberman, tenured professor of neurobiology at Stanford University School of Medicine, explains the cortisol rhythm in detail, including why morning sunlight amplifies the cortisol awakening response by up to 50%, and why most people's cortisol problems stem from disrupted timing rather than levels being universally "too high":

Important Limitations

The cortisol-sleep connection is well-established in research, but some important caveats apply:

Cortisol testing is tricky. Serum cortisol fluctuates throughout the day and is affected by stress, food, and exercise. A single blood draw doesn't capture your cortisol rhythm. Diurnal salivary cortisol testing (4 samples across 24 hours) is more informative but rarely covered by insurance. Most people with cortisol-related sleep problems will never get tested — and in many cases, behavioral interventions work regardless of measured levels.

"Adrenal fatigue" isn't a recognized diagnosis. Despite its popularity online, the concept of "adrenal fatigue", where the adrenals supposedly "burn out" from chronic stress, is not supported by endocrinology research. The Endocrine Society explicitly states that adrenal fatigue is not a real medical condition. HPA axis dysregulation is real; "adrenal fatigue" is a mischaracterization of how it works.

Supplements have ceiling effects. Ashwagandha's 27.9% cortisol reduction is impressive for a supplement, but it won't overcome cortisol dysregulation caused by untreated sleep apnea, Cushing's syndrome, or severe unmanaged anxiety. Supplements work best for mild-to-moderate stress-related cortisol overproduction — not for pathological conditions.

Original Analysis: Intervention Strength by Cortisol-Sleep Target

We mapped available interventions against three cortisol-sleep targets. This framework doesn't appear in competing articles, most present all solutions as equivalent without differentiating by mechanism or evidence strength:

Target	Behavioral	Supplement	Clinical
Lower evening cortisol	Screen cutoff, wind-down routine (moderate evidence)	Ashwagandha KSM-66 (strong, 27.9% reduction RCT)	CBT-I (strong — gold standard for insomnia)
Improve sleep onset	Consistent wake time, bedroom cooling (strong)	Magnesium glycinate + glycine (strong, multiple RCTs)	Low-dose melatonin for timing (moderate)
Restore circadian rhythm	Morning light 10 min (strong, 50% CAR amplification)	Limited direct evidence	Light therapy boxes (strong for SAD/shift work)

Key insight: No single intervention addresses all three targets. The most effective approach combines a behavioral foundation (consistent timing + light) with targeted supplements (ashwagandha for cortisol + magnesium/glycine for sleep). This is why "just take ashwagandha" or "just meditate" rarely solves chronic cortisol-sleep problems on their own — they each hit only one of the three targets.

When to See a Doctor

If your sleep problems have persisted for more than 3 months, significantly impair your daytime functioning, or are accompanied by symptoms like unexplained weight gain, persistent fatigue despite adequate sleep, depression, or anxiety that's worsening, consult your healthcare provider. These patterns can indicate clinical conditions, including Cushing's syndrome, thyroid disorders, or clinical depression, that require medical evaluation beyond lifestyle and supplement interventions.

Cognitive behavioral therapy for insomnia (CBT-I) is considered the gold standard first-line treatment for chronic insomnia and is more effective than sleep medications for long-term outcomes. If you haven't tried CBT-I, ask your doctor for a referral before relying solely on supplements.

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How long does it take to reset cortisol levels?

Lifestyle interventions (consistent sleep schedule, exercise, meditation) begin showing measurable cortisol changes within 2 to 4 weeks. Ashwagandha supplementation showed significant cortisol reduction at 60 days in the Chandrasekhar 2012 trial. Full HPA axis normalization after chronic stress may take 8 to 12 weeks of sustained intervention.

Does magnesium lower cortisol?

Research suggests magnesium may attenuate the cortisol response to stress. Magnesium-deficient individuals show exaggerated HPA axis activation. Correcting the deficiency with magnesium glycinate (200 to 400 mg elemental, taken in the evening) may help normalize cortisol patterns. See magnesium and anxiety and ashwagandha and cortisol.

What time of day is cortisol highest?

In a healthy circadian pattern, cortisol peaks 30 to 45 minutes after waking (the cortisol awakening response) and gradually declines throughout the day, reaching its lowest point around midnight. Disrupted sleep, chronic stress, and shift work can flatten or invert this pattern, leading to evening cortisol elevation that interferes with sleep onset.

What's new in supplement research: 2025–2026

Supplement science moved on multiple fronts in 2025–2026. KSM-66 ashwagandha cleared its first year-long safety study. NMN research consolidated with consistent NAD+-boosting results across several trial designs. Creatine continued to accumulate cognitive-function evidence beyond the gym.

The cortisol-sleep feedback loop: why one bad night makes the next one worse

Cortisol and sleep exist in a bidirectional relationship that can spiral in either direction. A single night of poor sleep raises next-day cortisol by 37 to 45% (Leproult 1997, measured in healthy young adults). That elevated cortisol suppresses melatonin production the following evening, making the next night's sleep onset harder. After 3 to 5 nights of this pattern, the HPA axis begins to recalibrate, treating the elevated cortisol baseline as normal. Breaking this cycle requires addressing both sides simultaneously.

Ashwagandha's relevance to this feedback loop is specific: it modulates cortisol through the HPA axis rather than directly sedating. The Chandrasekhar 2012 RCT measured a 27.9% reduction in serum cortisol after 60 days of 600 mg/day KSM-66 in chronically stressed adults. The Langade 2019 trial (n=150) found that KSM-66 improved sleep onset latency, sleep efficiency, and total sleep time in adults with insomnia, with larger effects in the subgroup with documented high cortisol. The mechanism appears to be upstream: lower cortisol permits normal melatonin secretion, which allows sleep architecture to normalize on its own.

Measuring your cortisol-sleep pattern: practical self-assessment

Before investing in supplements to address the cortisol-sleep connection, determine whether cortisol is actually your problem. Two simple self-assessments can help.

The vacation test: Do you sleep significantly better on vacation or when you have no obligations the next day? If yes, your sleep problem is likely stress-mediated (cortisol-driven), because the removal of anticipatory stress normalizes your cortisol pattern. If your sleep is equally poor regardless of context, the cause may be circadian (melatonin-related), environmental (light, temperature, noise), or medical (sleep apnea, restless legs). Ashwagandha addresses cortisol-driven insomnia specifically; it will not fix circadian, environmental, or medical causes.

The 3 AM test: Do you wake between 2 and 4 AM and find it difficult to fall back asleep, often with a racing mind or sense of alertness? This pattern is classically cortisol-driven. Cortisol begins its circadian rise around 3 AM in preparation for morning waking. In stressed individuals, this rise is exaggerated, producing a premature waking signal that feels like sudden alertness in the middle of the night. Ashwagandha's HPA axis modulation can dampen this premature cortisol surge. Melatonin cannot, because the issue is not circadian timing but stress hormone amplitude.

If both tests suggest cortisol involvement: ashwagandha (600 mg KSM-66, taken in the evening) is the most evidence-based first intervention. If your sleep issue does not match the cortisol pattern: start with magnesium glycinate (200 to 400 mg elemental before bed) for physical relaxation and low-dose melatonin (0.5 to 1 mg) for circadian support. See ashwagandha for sleep and best supplements for sleep for the complete decision framework.

High cortisol at night: what it feels like and what to do about it

Elevated evening cortisol produces a distinctive symptom pattern that many people recognize: you are exhausted all day but wired at bedtime. The fatigue comes from cortisol depletion during the day (your adrenal output was high all morning and crashed by afternoon). The wired-at-night feeling comes from a second cortisol spike in the evening — either from late-day stressors or from a dysregulated HPA axis that has lost its normal circadian decline. This pattern is sometimes called "tired but wired" and is one of the hallmarks of chronic stress-driven sleep disruption.

The intervention order matters. First, remove the most common evening cortisol triggers: screen exposure within 2 hours of bedtime (blue light directly stimulates cortisol release), intense exercise after 7 PM (acute cortisol spike from training), caffeine after 2 PM (caffeine has a half-life of 5 to 6 hours and stimulates adrenal cortisol output), and stressful content consumption (news, work emails, difficult conversations) in the hour before bed.

Second, support the biological cortisol decline. Ashwagandha at 300 to 600 mg KSM-66, taken in the evening, directly modulates HPA axis output, the Langade 2019 trial demonstrated improved sleep parameters with this approach. Magnesium glycinate at 200 to 400 mg elemental, taken 30 to 60 minutes before bed, promotes GABA-mediated relaxation that counters the physiological arousal cortisol produces. The combination addresses the cortisol problem (ashwagandha) and the resulting muscle tension and neural excitability (magnesium) through complementary mechanisms. See ashwagandha and cortisol and best supplements for sleep.

The most overlooked cortisol intervention is consistent wake time. Even more important than consistent bedtime, waking at the same time every day (including weekends) anchors the cortisol awakening response, which cascades into a predictable cortisol decline throughout the day. Shifting your wake time by 2 hours on weekends (social jet lag) disrupts the entire cortisol curve for the following 2 to 3 days. For people with cortisol-driven sleep problems, protecting wake time consistency is the highest-impact behavioral change available, and it costs nothing.

The exercise-cortisol paradox: when working out makes sleep worse

Exercise is one of the most powerful cortisol-regulating interventions available, but the timing matters critically for people with cortisol-driven sleep problems. Intense exercise (HIIT, heavy resistance training, competitive sports) acutely raises cortisol for 30 to 90 minutes post-exercise. For most people, this cortisol spike is beneficial, it drives adaptation and returns to baseline within hours. But for people whose baseline cortisol is already chronically elevated, adding an exercise-induced spike in the evening can push evening cortisol above the threshold that permits sleep onset.

The practical guideline: complete intense exercise at least 4 hours before your target bedtime. Morning and early afternoon training is ideal for people with cortisol-driven insomnia. Gentle evening activities (walking, yoga, stretching) produce a net cortisol-lowering effect and can actually improve sleep onset. The worst combination for cortisol-driven sleep problems is intense evening exercise followed by screen exposure — both stimulate cortisol through different pathways, creating a compound effect that no supplement can fully override.

If your schedule only allows evening training: consider ashwagandha (300 to 600 mg KSM-66) taken 2 hours before your workout. The cortisol-modulating effect may blunt the post-exercise spike enough to prevent it from interfering with sleep onset. Magnesium glycinate (200 to 400 mg) taken after your post-workout meal supports the physical relaxation transition. See ashwagandha and cortisol and best supplements for sleep.

The stress-sleep-cortisol cycle can be broken at any of its three entry points. Breaking it at the sleep entry point (magnesium glycinate + sleep hygiene) works even if cortisol remains elevated. Breaking it at the cortisol entry point (ashwagandha + stress management) works even if sleep hygiene is imperfect. Breaking it at the stress entry point (cognitive behavioral strategies + life changes) addresses the root cause but takes the longest. Most successful interventions target at least two of the three entry points simultaneously.

Measuring progress: tracking the cortisol-sleep improvement

Because the cortisol-sleep cycle is bidirectional, improvement can enter from either direction. Track both cortisol proxy markers and sleep metrics weekly to identify which is improving first and whether the intervention is working.

Cortisol proxy markers (no blood work needed): Perceived stress (1 to 10 scale, recorded at the same time daily). Afternoon energy (1 to 10 scale). Stress reactivity (how intensely you react to minor frustrations, traffic, email, scheduling conflicts). These three metrics decline as cortisol normalizes.

Sleep metrics: Sleep onset latency (minutes to fall asleep, estimated upon waking). Night wakings (count). Morning refreshment (1 to 10 scale). Wearable sleep data if available (sleep efficiency percentage, deep sleep minutes). These four metrics improve as the cortisol-sleep cycle begins to normalize.

Record both sets of metrics for 2 weeks before starting any intervention (baseline), then continue for 8 weeks during the intervention. Look for correlated improvement: if cortisol markers improve before sleep markers, the cortisol intervention (ashwagandha, stress management) is working and sleep improvement should follow within 2 to 4 weeks. If sleep markers improve first (due to magnesium or sleep hygiene changes), cortisol normalization should follow as sleep quality supports HPA axis recovery.

For people who want to go deeper on the individual interventions: ashwagandha for sleep covers the Langade 2019 trial in detail. Magnesium glycinate sleep research covers the Schuster 2025 RCT. Best time to take magnesium glycinate covers the optimal timing protocol. Together, these three guides provide the complete evidence base for a cortisol-aware sleep supplement strategy.

The most encouraging aspect of the cortisol-sleep relationship: once the cycle is broken in one direction, improvements tend to cascade. Better sleep lowers next-day cortisol, which improves the following night's sleep further, creating a virtuous cycle that accelerates recovery. Most people who successfully break the cortisol-sleep cycle report that the first 2 weeks are the hardest, and the subsequent improvement becomes self-sustaining as each good night makes the next one easier.

Who should be cautious

Anyone taking prescription medication. Several supplements discussed here interact with common drugs. Berberine and magnesium affect blood sugar and blood pressure medications; ashwagandha interacts with thyroid, sedative, and immunosuppressant drugs; adaptogens can amplify or blunt various prescriptions. Review your full medication list with a pharmacist before adding any supplement.

Pregnant or breastfeeding women. Many supplements, including berberine, ashwagandha, and most herbal adaptogens, are contraindicated or insufficiently studied during pregnancy and lactation. Default to avoiding supplements during these periods unless your doctor specifically approves them.

People with chronic health conditions. Those with kidney disease, liver disease, thyroid disorders, autoimmune conditions, or cardiovascular disease should treat supplements with the same caution as medications. What is safe for a healthy adult may not be safe for you.

People with upcoming surgery. Several supplements affect blood clotting or interact with anesthesia. Stop most supplements at least 2 weeks before scheduled surgery and inform your surgical team.

The safest approach with any supplement is to introduce one at a time, start at the lower end of the dose range, and monitor how you respond before adding anything else. Supplements are tools for specific goals, not risk-free additions to your routine.

Frequently Asked Questions

Where the research stands

Cortisol and sleep aren't independent variables, they're locked in a feedback loop. When that loop is working, cortisol rises with the sun and falls with the moon, and sleep happens naturally. When it's broken, each bad night makes the next one worse.

Fix the foundation first: consistent wake times, morning light, evening wind-down, caffeine cutoff. Then add targeted supplements if needed, ashwagandha for the cortisol side, magnesium glycinate for the sleep side. And if nothing is working after 3 months, see your doctor — because some sleep problems have medical causes that no supplement can address.

Why we wrote this article: YourHealthier sells both ashwagandha and magnesium glycinate, two supplements referenced in this article. We've been transparent about the evidence for each and have recommended behavioral strategies as the primary foundation. See our Editorial Policy.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This article is for informational purposes only and is not a substitute for professional medical advice. If you experience persistent sleep problems, consult a healthcare provider.

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• Ashwagandha and Cortisol: What the Science Says
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• Best Supplements for Sleep
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• Best Time to Take Magnesium Glycinate

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References

1. Balbo, M., Leproult, R., & Van Cauter, E. (2010). Impact of sleep and its disturbances on hypothalamo-pituitary-adrenal axis activity. International Journal of Endocrinology, 2010, 759234. PubMed
2. Chandrasekhar, K., Kapoor, J., & Anishetty, S. (2012). A Prospective, Randomized Double-Blind, Placebo-Controlled Study of Safety and Efficacy of a High-Concentration Full-Spectrum Extract of Ashwagandha Root in Reducing Stress and Anxiety in Adults. Indian Journal of Psychological Medicine, 34(3), 255–262. PubMed
3. Abbasi, B., Kimiagar, M., Sadeghniiat, K., et al. (2012). The effect of magnesium supplementation on primary insomnia in elderly. Journal of Research in Medical Sciences, 17(12), 1161–1169. PubMed

Disclosure: YourHealthier manufactures and sells ashwagandha discussed in this article. All health claims are based on published peer-reviewed research cited above. We earn revenue from product sales linked in this article.