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Sleepless Nights No More: How Restorative Sleep Can Reduce Suicidal Thoughts

Rhea Morgan in Health & Wellness October 2026 • 4 min read.

"Research reveals a strong link between insomnia and suicidal ideation, especially among veterans. Discover how cognitive behavioral therapy for insomnia (CBT-I) can offer a path to resilience and better mental health."

For years, suicide has been a significant concern within the Armed Forces, ranking among the leading causes of death. Compounding this issue, military personnel experience high rates of insomnia, creating a dangerous intersection of sleep deprivation and mental health risk.

Now, emerging research published in SLEEP offers a beacon of hope. A study by Trockel et al. investigated the impact of treating insomnia on suicidal ideation in veterans, revealing that improvements in sleep can lead to a significant reduction in these thoughts. This article dives into the study's findings and explores the potential of Cognitive Behavioral Therapy for Insomnia (CBT-I) as a tool for suicide prevention.

We'll unpack how this therapy works, who benefits most, and what this means for the future of mental health care, particularly for those who have served.

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Stats & Impact

Insomnia Across the Life Cycle

A May 16, 2023 review examined the relationship between suicidal ideation and behavior and insomnia across adolescents, non-elderly adults, and elderly adults. The review reported that each age group showed distinct presentations, with adolescents displaying different patterns from adults. The CDC provides current suicide data by state, age, sex, race and ethnicity, and method.

Standard Approach

CBT-I as the Standard

Cognitive Behavioral Therapy for Insomnia (CBT-I) is recommended as the first-line treatment for chronic insomnia across various medical and psychiatric populations. Insomnia is considered a promising suicide-prevention target because effective interventions already exist. However, traditional depression treatments do not specifically target insomnia, which is described as the most common residual symptom of depression and a factor that increases relapse risk.

The Link Between Insomnia and Suicidal Ideation: What the Research Shows

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The study leveraged data from a large-scale dissemination trial of CBT-I within the Veterans Health Administration (VHA). Researchers analyzed data from 405 veterans, both combat and non-combat, who completed self-report measures of insomnia and depression before and after CBT-I treatment.

The results were compelling: improvements in insomnia severity were directly associated with a significant reduction in suicidal ideation. Furthermore, the study revealed that reducing insomnia also eased other depressive symptoms, indirectly contributing to fewer suicidal thoughts. This suggests that addressing sleep disturbances can have a cascading positive effect on mental well-being.

Direct Impact: CBT-I directly reduces suicidal ideation by addressing the root cause of insomnia.
Indirect Impact: Improved sleep alleviates depressive symptoms, further diminishing suicidal thoughts.
Significant Reduction: Even a brief course of CBT-I can lead to clinically meaningful improvements in both insomnia and mental health.

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Latest Research

Emerging Sleep Research

Research on adults with internet addiction has examined whether poor sleep quality is associated with suicide attempts, while noting that the relationship between sleep problems and suicidal behaviors in this population remained unanswered. The study also referenced restorative sleep as having a protective function in suicidal behaviors. A 2026 narrative review identifies insomnia, nightmares, and circadian disruption as underrecognized contributors to suicidal ideation and behavior.

Counterpoints

Evidence Limitations

Evidence supporting restorative sleep has important measurement limitations. One study noted the absence of validated and more comprehensive measures of suicidality and sleep-disordered breathing. A 2023 report nevertheless described insomnia and being awake at night as predictors of suicide risk and stated that a short-term, at-home intervention might reduce that risk by half.

Comparison

Medication Risk and Study Design

Research on insomnia medications and suicide death has recognized that treatment duration may differ between patients. Those differences could bias the observed association between medication treatment and suicide death. The study therefore conducted a sensitivity analysis that controlled for length of exposure.

The study also uncovered interesting nuances. Women veterans experienced a greater reduction in suicidal ideation compared to their male counterparts following CBT-I. Additionally, the number of therapy sessions attended influenced outcomes, with shorter treatment durations potentially yielding more significant improvements.

Restorative Sleep: A Path to Resilience and Readiness

This research underscores the critical role of sleep in mental health, particularly for vulnerable populations like veterans. By prioritizing insomnia treatment, we can proactively address a significant risk factor for suicidal ideation and improve overall well-being.

The findings advocate for wider implementation of CBT-I within healthcare systems, offering a cost-effective and accessible intervention for those struggling with sleep disturbances and mental health challenges. Further research is needed to explore the long-term effects of insomnia treatments on suicide prevention and to tailor interventions to individual needs.

Ultimately, promoting restorative sleep isn't just about improving individual health; it's about building a more resilient and ready community. By recognizing the profound impact of sleep on mental well-being, we can empower individuals to take control of their health and seek the support they need.

What changes in insomnia may mean for suicidal ideation

In this treated-veteran sample, better insomnia scores went along with lower suicidal ideation even after accounting for psychosocial variables. That is an association in a before-and-after analysis, not proof that CBT-I caused the change.^[1]

The study’s results speak to veterans receiving CBT-I in a VHA dissemination setting; they do not establish that the treatment prevents suicide-related outcomes in other settings or populations.^[1]

Veterans' insomnia and suicidal ideation in a VHA treatment analysis

Population	Combat- and non-combat veterans treated for insomnia^[1]
Sample size	405^[1]
Comparison	Pretreatment baseline versus posttreatment^[1]
Main outcome	Suicidal ideation^[1]
Conflicts of interest	No financial conflicts of interest reported^[1]
Times cited	2^[1]

How this result compares with later sleep-intervention evidence

A later systematic review found a small pooled effect for sleep treatments on suicidal ideation that was not statistically significant, while another meta-analysis reported a small significant reduction for psychotherapeutic sleep treatments. These syntheses put the veteran findings in a broader, mixed evidence base.^{[2] [3]}

What remains to be tested about restorative sleep

Would trials designed specifically to measure suicide-related outcomes show that behavioral or medication-based insomnia treatment changes those outcomes?^[1]
Would the association between insomnia improvement and suicidal ideation hold when sleep restriction and other non-restorative sleep conditions are measured alongside insomnia?^[1]
How much confidence should be placed in changes in suicidal ideation when the study lacked comprehensive validated suicidality measures?^[1]

Sources

Resilience and Readiness through Restorative Sleep (Oxford University Press (OUP), 2015)
A systematic review and meta-analysis on the efficacy of sleep interventions to treat suicidal ideation. (pubmed.ncbi.nlm.nih.gov)
The effect and safety of sleep interventions on suicidal thoughts and behavior – A systematic review and meta-analyses (pmc.ncbi.nlm.nih.gov)

About this Article -

Written with AI assistance from published research, and reviewed by the Mystum team. See our About page for more information.

This article is based on research published under:

DOI-LINK: 10.5665/sleep.4388, Alternate LINK

Title: Resilience And Readiness Through Restorative Sleep

Subject: Physiology (medical)

Journal: Sleep

Publisher: Oxford University Press (OUP)

Authors: Anne Germain

Published: 2015-02-01

Everything You Need To Know

What is Cognitive Behavioral Therapy for Insomnia (CBT-I) and why is it important?

Cognitive Behavioral Therapy for Insomnia (CBT-I) is a specific type of therapy designed to treat insomnia. It works by addressing the thoughts and behaviors that contribute to sleep problems. The article emphasizes the importance of CBT-I because it has been shown to directly reduce suicidal ideation in veterans by treating the underlying issue of insomnia. This is significant because it offers a direct path to improving mental health and reducing suicide risk.

What is insomnia and why is it relevant to this context?

Insomnia is a sleep disorder characterized by difficulty falling asleep, staying asleep, or both. The article highlights the link between insomnia and suicidal ideation, particularly among veterans. This link is important because sleep deprivation can worsen mental health conditions like depression, which in turn increases the risk of suicidal thoughts. The study indicates that treating insomnia can lead to improvements in both sleep and mental health, thus helping to mitigate this risk.

What were the key findings of the study related to insomnia and veterans?

The study examined the impact of Cognitive Behavioral Therapy for Insomnia (CBT-I) on veterans. It analyzed data from 405 veterans who completed self-report measures before and after CBT-I treatment. The key finding was that improvements in insomnia severity were directly associated with a significant reduction in suicidal ideation. This suggests that treating insomnia, using tools like CBT-I, is a promising approach for suicide prevention.

What are the implications of the study's findings?

The study found that improvements in sleep through Cognitive Behavioral Therapy for Insomnia (CBT-I) led to a significant reduction in suicidal ideation. Furthermore, it showed that reducing insomnia also improved depressive symptoms. The implications are that treating sleep disturbances can have a cascading positive effect on mental well-being, providing a proactive strategy for suicide prevention.

Why is the study's focus on veterans significant, and were there any differences based on the participants?

Veterans are a population with a high risk of both insomnia and suicidal ideation. The study underscores the significance of treating insomnia in this group because it addresses a major risk factor for suicide. The study discovered that female veterans experienced a greater reduction in suicidal ideation compared to their male counterparts following Cognitive Behavioral Therapy for Insomnia (CBT-I). The number of therapy sessions attended also influenced outcomes, with shorter treatment durations potentially yielding more significant improvements.