Triggers of Suicidal Behavior

  • Oct 27th 2025
  • Est. 10 minutes read

Thoughts of suicide rarely appear out of nowhere. Instead, they typically develop due to emotional pain, mental health challenges, or difficult life experiences. When these obstacles arise or persist, pain can feel unmanageable, and hope can seem out of reach. However, a compassionate look at suicidal triggers, which are situations or events that can increase the risk of suicide, can guide safer decisions and connect those in crisis to support.

What is Suicidal Behavior?

Suicidal behavior refers to a spectrum of thoughts and actions related to suicide. This behavior can range from thinking about suicide (aka suicidal ideation) to actually making suicide plans and attempting suicide [1].

People of all ages, genders, and backgrounds can have suicidal behaviors, which can vary by person and episode. According to suicide-related data from the Centers for Disease Control and Prevention, 12.8 million U.S. adults seriously thought about suicide in 2023, with 3.7 million of these people actually making a plan to end their life and 1.5 million attempting suicide [2]. Despite the prevalence of suicidal ideation, it should always be taken seriously, as these thoughts indicate significant emotional distress that requires immediate attention. 

Psychological Triggers for Suicide

Mental health conditions are among the strongest psychological triggers for suicidal behavior. In fact, suicide insights from the National Alliance on Mental Illness (NAMI) reveal that 46% of those who die by suicide had a known mental health condition [3].

Depression is the most common condition associated with suicide [4]. However, other disorders such as schizophrenia, bipolar disorder, borderline personality disorder, and post-traumatic stress disorder (PTSD) are all linked to suicidal behaviors [5].

Other common psychological triggers include substance misuse and substance use disorders [1]. Some substances can intensify mood swings, reduce inhibitions, and increase impulsivity, potentially worsening suicidal thoughts. What’s more, intoxication is a risk factor in itself, as roughly one in five people who die by suicide had alcohol in their system at the time of death [3].

Perhaps not surprisingly, for those with co-occurring mental health and substance use disorders, the risk may be even more pronounced. People experiencing psychological distress may turn to substances as a form of self-medication. Plus, substance use disorders may worsen or contribute to the development of mental health disorders [6]. When mental health challenges and substance use overlap, they can form a cycle of distress that deepens suicidal risk.

Environmental Suicide Triggers

Life circumstances can be a powerful influence on suicidal behavior. Social and environmental triggers can create or amplify feelings of overwhelm, hopelessness, and despair, which are associated with suicidal behavior [4].

Examples of social and environmental triggers for suicidal ideation and behaviors include [3] [4] [7]:

  • Prolonged stress caused by bullying, unemployment, homelessness, relationship issues, harassment, discrimination, etc.
  • Challenging life events such as divorce, financial crisis, loss, rejection, incarceration, and legal problems etc.
  • Chronic pain or illness
  • Ample access to lethal means (e.g., firearms and medications)

Social isolation is another important suicide risk factor, as demonstrated by the COVID-19 pandemic. During June 2020, U.S. adults reported significantly elevated mental health issues, including increased substance use and suicidal ideation [8]. Along these same lines, those who lack supportive relationships or those who feel they don’t belong within their communities may face greater vulnerability during times of stress or crisis [7].

Traumatic Events and Suicide

Experiences involving trauma can significantly increase the risk of suicidal behavior. For example, past suicide attempts or a family history of suicide are strong predictors, reflecting both psychological vulnerability and a history of coping with extreme distress [3]. Abuse, whether emotional, physical, or sexual, can also leave lasting scars that contribute to hopelessness, low self-esteem, and difficulty managing intense emotions [7].

Other traumatic experiences, such as witnessing or experiencing violence, military combat, natural disasters, or serious accidents, can also create intense psychological strain. These events often interact with existing vulnerabilities, including mental health conditions or social isolation, to compound the impact [7].

Biological and Genetic Suicide Factors

Suicidal behavior is influenced not only by life experiences but also by biological and cognitive factors that shape how someone thinks, feels, and reacts to stress. For example, the body’s stress system can get out of balance, which in turn can impact how well people handle stress and can increase thoughts of suicide. Similarly, lower levels of helpful brain proteins and higher signs of brain inflammation are also found in people with suicidal thoughts. In some cases, neurocognitive impairments and various forms of dementia can also come with suicidal and depressive symptoms [9].

Beyond these biological and cognitive influences, genetic factors also play a role in shaping vulnerability to suicidal thoughts and behaviors. A family history of suicide can heighten risk, and specific gene variants are linked to both depressive disorders and suicidal behavior [9] [10].

Alongside biology and genetics, sexual orientation and personal identity struggles further contribute to the complex web of suicide risk [1] [7]. Experiences of discrimination or stigma can amplify stress, particularly for those who identify as LGBTQ+. In turn, this stress can interact with pre-existing vulnerabilities to increase suicidal risk [7].

Protective Factors Against Suicide

While many risk factors influence suicidal behavior, certain protective factors can help reduce the likelihood of suicide and build resilience. These protectors provide emotional support, coping resources, and a sense of belonging, helping people navigate stress and distressing thoughts. Granted, protective factors don’t eliminate risk entirely. Instead, they can serve as buffers that make suicidal behavior less likely.

Protective factors against suicidal behaviors include [3] [4] [10]:

  • Strong Social Connections: Maintaining supportive relationships with family, friends, or community members can provide a sense of belonging and reduce feelings of isolation. Plus, participation in social, religious, or cultural communities can offer meaning, identity, and emotional support.
  • Access to Mental Health Care: Access to counseling, therapy, psychiatric treatment, and proactive mental health care can help manage underlying conditions and suicidal thoughts. 
  • Problem-Solving and Coping Skills: Developing healthy strategies to manage stress, conflict, and life challenges can help prevent crises from escalating.
  • Hope and Future Orientation: Nurturing a sense of hope, belonging, purpose, and meaning can counteract feelings of hopelessness and despair.

These protective factors highlight how support systems, coping resources, and a sense of purpose can reduce suicide risk and enhance well-being.

Suicide Warning Signs 

While risk factors and triggers help identify who might be vulnerable to suicidal thoughts over time, warning signs involving current behavior, speech, and mood can indicate when someone may be in immediate danger. Recognizing these signs can be lifesaving, as timely intervention is critical.

Acute warning signs of suicide include (but are not limited to) [4] [10]:

  • Talking about Suicide: Expressing thoughts of suicidal intent, even indirectly, can indicate significant risk.
  • Expressing Hopelessness and Lack of Purpose: Statements reflecting despair or a belief that things will never improve can signal a heightened risk, as can feelings of hopelessness, a lack of purpose, and a sense of being a burden to others.
  • Seeking Means: Looking for ways to end one’s life, such as obtaining firearms or medications, or researching suicide online, is a significant warning sign.
  • Withdrawing Socially: Pulling away from friends, family, or usual activities may indicate internal struggle, as can contacting people to say goodbye and giving away prized possessions.  
  • Experiencing Significant Changes in Mood: Sudden shifts in mood, irritability, aggression, or heightened anxiety can be red flags. Similarly, a sudden sense of relief or improvement in previously negative moods can be troubling.
  • Engaging in Risky Behaviors: Reckless driving, increased substance misuse, or other self-endangering actions can indicate diminished impulse control and increased danger.

While warning signs vary from person to person and they’re not always obvious, it’s vital to act on them immediately. Doing so can help connect the person to lifesaving support and prevent a potential crisis from escalating.

Suicide Help and Resources

Whether seeking help for oneself or someone else, finding help for suicidal thoughts or behaviors is essential. Fortunately, several effective treatments and resources are available to support those in need, and recovery is possible with proper care.

The path to healing often involves professional treatment and knowing how to access crisis resources when needed. With appropriate interventions and ongoing support, those experiencing suicidal thoughts can develop healthier coping strategies for managing life’s challenges.

Crisis Intervention

When someone shows warning signs of suicide, taking appropriate action can save a life. The first step is to take all talk of suicide seriously. Contrary to common myths, asking someone directly about suicidal thoughts will not increase their risk. Instead, the inquiry shows someone cares and creates an opportunity for them to share their feelings and get help [11].

If someone discloses suicidal thoughts, stay calm and listen without judgment. Then help them connect with professional resources. If it seems like the person is in immediate danger, call 911 and stay with them until help arrives [5].

If you or someone else is experiencing suicidal thoughts, these crisis resources can provide support:

  • 911 Emergency Services: Call 911 or go to the nearest emergency room if someone is in immediate danger.
  • 988 Suicide & Crisis Lifeline: Call or text 988, or chat at 988lifeline.org for 24/7 support.
  • Crisis Text Line: Text HOME to 741741 to connect with a trained crisis counselor.
  • Or text 838255. Online chat is also available
  • Trans Lifeline: Transgender people can call 1-877-565-8860 for peer support.
  • The Trevor Project: LGBTQ+ young people can call 1-866-488-7386, text START to 678678, or chat online at TheTrevorProject.org/Get-Help.
  • Veterans Crisis Line: Veterans, service members, and their families can call 988 (press 1) 

Treatment Options and Therapies

For those requiring immediate care and protection, psychiatric hospitalization provides 24/7 monitoring and intensive treatment until the acute crisis resolves. If hospitalization isn’t necessary, inpatient and outpatient mental health treatment for suicidal behavior typically involves a combination of psychotherapy and medication tailored to each person’s needs. 

Various forms of psychotherapy are available. Among them, cognitive behavioral therapy (CBT) helps people identify and change negative thought patterns that contribute to suicidal thinking. Similarly, dialectical behavior therapy (DBT), which is a form of CBT, is also highly effective. This approach teaches skills in mindfulness, distress tolerance, emotion regulation, and interpersonal effectiveness [11].

Meanwhile, mental health medications for the treatment of related symptoms and underlying mental health conditions often go hand in hand with psychotherapy. Research shows that those who received medication, psychotherapy, or a mix of both tend to have a better suicide-related prognosis [9].

Next Steps for Recovery and Support

Understanding the triggers of suicidal behavior is essential, but equally important is recognizing that recovery is possible. The complex web of factors that contribute to suicidal thoughts, from psychological conditions and trauma to social isolation and biological vulnerabilities, can be addressed through proper intervention and support. 

With appropriate treatment, including therapy, medication, and crisis intervention when needed, people can overcome suicidal thoughts and behaviors and develop healthier ways to manage life’s challenges. After all, many people who once experienced suicidal crises now live fulfilling, purposeful, and meaningful lives. Taking that first step toward help can open the door to safety, healing, and hope.

References
  1. Cleveland Clinic. (2024, July 23). Suicidal ideation (Suicidal thoughts). Cleveland Clinic.  https://my.clevelandclinic.org/health/symptoms/suicidal-ideation.
  2. Centers for Disease Control and Prevention. (2025, March 26). Suicide data and statistics. Centers for Disease Control and Prevention. https://www.cdc.gov/suicide/facts/data.html.
  3. National Alliance on Mental Illness. (2022, August). Risk of suicide. National Alliance on Mental Illness. https://www.nami.org/about-mental-illness/common-with-mental-illness/risk-of-suicide.
  4. American Foundation for Suicide Prevention. (n.d.). Risk factors, protective factors, and warning signs. American Foundation for Suicide Prevention. https://afsp.org/risk-factors-protective-factors-and-warning-signs.
  5. MedlinePlus. (2023, May 10). Suicide and suicidal behavior. MedlinePlus. https://medlineplus.gov/ency/article/001554.htm.
  6. National Institute on Drug Abuse. (2024, September). Co-occurring disorders and health conditions. National Institute on Drug Abuse. https://nida.nih.gov/research-topics/co-occurring-disorders-health-conditions#problems-occur.
  7. Government of Canada. (2023, November 30). Suicide: Risks and prevention. Government of Canada. https://www.canada.ca/en/public-health/services/suicide-prevention/suicide-risks-prevention.html.
  8. Centers for Disease Control and Prevention. (2020, August 14). Mental health, substance use, and suicidal ideation during the COVID-19 pandemic — United States, June 24-30, 2020. Centers for Disease Control and Prevention. https://www.cdc.gov/mmwr/volumes/69/wr/mm6932a1.htm.
  9. Harmer B., Lee S., Rizvi A., et al. Suicidal Ideation. [Updated 2024 Apr 20]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2025 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK565877.
  10. Centers for Disease Control and Prevention. (2024, April 25). Risk and protective factors for suicide. Centers for Disease Control and Prevention. https://www.cdc.gov/suicide/risk-factors/index.html.
  11. National Institute of Mental Health. (2023). Frequently asked questions about suicide. National Institute of Mental Health. https://www.nimh.nih.gov/health/publications/suicide-faq.
Allan Schwartz, Ph.D.
Author Allan Schwartz, Ph.D. Social Worker, Writer

Allan Schwartz, LCSW, Ph.D. is a medical writer with more than 30 years of clinical experience as a Licensed Clinical Social Worker. He writes on a wide range of mental health topics, including mood and anxiety disorders, eating disorders, trauma, abuse, stress, and relationship challenges.

Published: Oct 27th 2025, Last updated: Oct 27th 2025

Shivani Kharod, Ph.D.
Medical Reviewer Shivani Kharod, Ph.D. Ph.D.

Shivani Kharod, Ph.D. is a medical reviewer with over 10 years of experience in delivering scientifically accurate health content.

Content reviewed by a medical professional. Last reviewed: Oct 27th 2025
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