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Mental Health and Suicide

Reviewed by Psychology Today Staff

Many mental health disorders—including depression, bipolar disorder, borderline personality disorder, and PTSD—come with a heightened risk of suicidal thoughts or attempts. Symptoms of despair, emptiness, or hopelessness may lead someone with depression, bipolar disorder, or PTSD to consider taking their own life; in disorders such as borderline personality disorder, ADHD, or bipolar disorder, mood swings or impulsivity can contribute to suicidality. While seeking help for suicidal thoughts or behaviors is critical regardless of the cause, securing a specific diagnosis may help the individual receive treatment—especially ongoing treatment—that is best suited to their mental health needs.

It’s also important to remember that while the majority of people who die by suicide have a diagnosable mental health condition of some kind, it is not universally the case. Addressing social, cultural, and economic risk factors is also a critical part of suicide prevention. (To learn more about such factors, visit the Social, Economic, and Genetic Influences page.)

For immediate help in the U.S., 24/7: Call 988 or go to 988lifeline.org. Outside of the U.S., visit the International Resources page for suicide hotlines in your country. To find a therapist near you, see the Psychology Today Therapy Directory.

Depression

Depression, a mood disorder marked by symptoms of persistent sadness, hopelessness, worthlessness, or emptiness, is a common driver of suicidal thoughts and behaviors. But while many people who die by suicide were depressed or had another mood disorder, the vast majority of people with depression do not attempt or seriously consider suicide. Any warning signs of suicidal ideation in a depressed person should be taken seriously, as they could indicate that the individual is in danger of hurting themselves. Luckily, depression is a highly treatable disorder, and appropriate treatment can greatly reduce the risk of suicidal behavior.

For more on recognizing and treating depression, visit the Depression Center.

Does depression increase the risk of suicide?

Yes. Depression is a key risk factor for suicide, and evidence suggests that a majority of those who take their own life have depression or another mood disorder. Common symptoms of depression—such as feelings of hopelessness or worthlessness—can directly lead to suicidal thoughts or behaviors. However, it’s critical to remember that depression does not automatically mean that someone is thinking about suicide, nor is it true that every person who dies by suicide was depressed.

How do depressive symptoms increase the risk of suicidal thoughts or behaviors?

Depression is often dominated by feelings of hopelessness and despair, coupled with the belief that things will never get better. Someone ruminating on such thoughts for weeks, months, or years may come to believe that taking their own life is the only way to escape the suffering. Depression also limits cognitive flexibility, making it more difficult for depressed people to assess the good elements of their life along with the bad, or take stock of how their death would hurt those they love. Indeed, many depressed people come to believe that others would be “better off without them,” a distortion that can further fuel suicidal ideation. 

Bipolar Disorder

Bipolar disorder is a serious mood disorder characterized by dramatic shifts between periods of depression and high-energy phases (known as mania or hypomania). Both phases of bipolar disorder are associated with a heightened risk of suicide. Bipolar disorder is treatable with medication and/or therapy, but because it often goes undiagnosed or misdiagnosed, some individuals may live with the disorder for years or decades before recieving treatment. Treatment, once initiated, greatly reduces the risk of suicide.

To learn more about symptoms, causes, and treatment for bipolar disorder, see our Diagnosis Dictionary.

Is suicide more common in people with bipolar disorder?

Bipolar disorder comes with a significantly heightened risk of suicidal behavior. An alarming body of evidence suggests that between 25 and 60 percent of individuals with bipolar disorder will attempt suicide at some point in their life; up to 20 percent will complete suicide. Because symptoms of untreated bipolar disorder tend to worsen with age, the risk of suicide increases as individuals grow older. Proper treatment, however, can significantly reduce suicidal thinking at almost any age.

Is suicide more common in bipolar I or bipolar II?

Bipolar disorder is divided into two primary types, bipolar I and bipolar II. Bipolar I is considered the more extreme form of the disorder and is characterized by episodes of mania, a state of elevated mood, energy, and behavior. During an extreme manic episode, an individual may be at greater risk of behaving in delusional, dangerous, or suicidal ways. Individuals with bipolar II, by contrast, typically experience hypomania, a much milder form of mania that often does not significantly impair functioning.

However, overall, evidence suggests that the risk of suicide is relatively equal in both forms of bipolar disorder. This is because thoughts of suicide tend to be most likely during depressive episodes, which can be quite severe regardless of what form of the disorder one has. 

Post-Traumatic Stress Disorder (PTSD)

Post-traumatic stress disorder, or PTSD, is a mental health condition that develops in the aftermath of a traumatic event such as sexual violence, a natural disaster, military combat, or a serious accident. PTSD is a complex condition that may manifest in several different ways—including depression, anxiety, or dissociation. Because PTSD can cause serious emotional turmoil and markedly reduce someone's quality of life, it is sometimes implicated in suicide. Seeking treatment for PTSD—often a combination of medication and therapy—can help restore emotional well-being and greatly reduce the risk of self-harm.

To learn more about recognizing and managing PTSD, visit Post-Traumatic Stress Disorder.

Does PTSD increase the risk of suicide?

Yes, people living with post-traumatic stress disorder are at a higher risk of suicide; the risk appears to be especially heightened in those also experiencing depression or substance abuse. 

How might past trauma lead to suicidal behaviors?

PTSD symptoms such as flashbacks, nightmares, and panic attacks can significantly worsen mental state and lead a person to feel trapped in their past trauma; over months or years of reliving painful memories and coping with the fallout, the individual may come to believe that ending their life is the only way to escape. Severe PTSD can also lead to decreased productivity at work or inappropriate emotional outbursts, both of which can make it harder for someone to maintain a job; the resulting financial and self-esteem difficulties may further worsen the risk of suicidal thoughts. Strained relationships and a lack of social support can engender isolation, further adding to one’s risk. PTSD is also linked to an increased incidence of substance abuse, which can heighten the risk of impulsive, life-threatening behaviors.

Borderline Personality Disorder (BPD)

Few conditions are as strongly linked to suicide as borderline personality disorder, or BPD, a personality disorder characterized by unstable moods, difficulty maintaining personal relationships, and an intense fear of abandonment. Evidence suggests that approximately 70 percent of those with BPD will attempt suicide, and as many as 10 percent will die by it. While the disorder does present treatment challenges, the majority of individuals with BPD who receive treatment—typically some form of psychotherapy, such as dialectical behavioral therapy, combined with medication—are able to stabilize and live productive, fulfilling lives.

For more on symptoms, causes, and treatment for BPD, visit our Diagnosis Dictionary.

Is borderline personality disorder associated with heightened suicide risk?

Yes. Recurrent self-harm and/or suicidal behavior are so common in individuals with borderline personality disorder (BPD) that they are part of the condition’s diagnostic criteria in the DSM-5. Evidence suggests that almost 80 percent of those with a BPD diagnosis have a history of suicide attempts; sadly, as many as 10 percent of those with BPD may die by suicide.

Are individuals with BPD more likely than others to threaten suicide or self-harm?

Yes. Threats of suicide or of self-harm are a common symptom of BPD, especially in response to perceived abandonment or rejection by friends, romantic partners, or other loved ones. Such threats should be taken seriously, as many people with BPD end up dying by suicide. On the other hand, such threats can create intense emotional strain or frustration for the people on the receiving end, especially if they occur repeatedly over long periods of time. Anyone who feels as if their loved one is at risk of attempting suicide should seek immediate help.

Substance Abuse

Addiction brings with it many well-known risks, including the risk of accidental death by drug overdose. Less talked about, however, is the heightened risk of suicide that comes with substance abuse. Evidence suggests that those with substance use disorders are approximately 6 times more likely to die by suicide than the general population. While many people with addiction who consider suicide are also struggling with depression or another mental health condition, others are not. Treating both the addiction and any concurrent mental health condition, if present, is the best way to decrease the risk of suicide and help the individual better cope with negative emotions in the future.

To learn more about the causes of addiction and paths to recovery, visit the Addiction Center.

Why are those struggling with addiction more likely to die by suicide?

Drug use can itself trigger depressive states or low mood—this is especially common with “downer” drugs such as sedatives or alcohol. Other kinds of drugs can lower inhibitions, leading people to behave impulsively or take dangerous actions that they wouldn’t take while sober.

Drug use may also be an attempt to cope with negative emotions such as depression, low self-esteem, or anxiety. But though substance use may help suppress bad feelings in the short term, it tends to worsen an individual’s emotional state over time—and when the drug runs out and painful emotions come rushing back, the person may feel overwhelmed by sadness and consider suicide as a way out. Relapse—though considered a normal part of the addiction recovery process by most experts—can trigger deep feelings of shame or self-loathing; such feelings can lead to thoughts of suicide for some, especially those without a strong support system. 

Are those with addiction more likely to attempt suicide by intentional overdose?

Suicide and overdose rates have both climbed dramatically in recent years, though the relationship between the two is complex. Many people with substance use disorders who attempt suicide do so while under the influence of drugs; some may intentionally take larger than normal quantities of drugs with the express goal of taking their own life. However, it’s often difficult to tell after the fact whether a fatal overdose was intentional or not—although in cases where the individual survived an overdose, the majority report that it was unintentional. On the other hand, individuals with substance use disorders who attempt suicide are more likely than other users to report past overdoses, suggesting that there may be a relationship of some kind between suicidal behavior and overdoses.

Other Mental Health Risk Factors

Other mental health disorders—including ADHD, autism, anxiety, and others—have also been shown in research to confer a heightened risk of suicide. The connection between these disorders and suicidality is typically less well-known than depression or bipolar disorder, and in some cases has not been well-studied. Thus, any signs of suicidal behavior should be taken seriously, regardless of the specific diagnosis involved.

To learn more about the conditions below, visit the ADHD Center, the Autism Center, or the Anxiety Center.

Does ADHD increase the risk of suicide?

Both children and adults with ADHD do appear to be at markedly increased risk of suicide. Those who struggle with impulsivity may be more likely to engage in self-harming behaviors or consider suicide when faced with a sudden low mood, career setback, or relationship upset. Impulsive individuals may also be more prone to substance abuse, which can in itself increase the risk of suicide. Symptoms of inattention may lead to academic, social, or career-related challenges that damage self-esteem; persistently low self-esteem or feeling that one is a failure can trigger or worsen suicidal ideation. ADHD and depression also frequently appear side by side, further heightening the risk of suicidal thoughts or behaviors. 

Does stimulant medication increase or lower the risk of suicide in people with ADHD?

Untreated ADHD is associated with a heightened risk of suicide and accidental death; however, some also worry that the first-line treatment—stimulant medications—could worsen, rather than ameliorate, the risk. Most experts argue, however, that this worry is based on a fundamental misunderstanding of stimulant medications and is not supported by research. In some cases, it may be fueled by media stories highlighting serious cases of stimulant abuse that ended in suicide.

Indeed, in the long run, most evidence suggests that when used safely and as prescribed, stimulant medication decreases the risk of suicide in most individuals with ADHD by stabilizing symptoms and allowing them to function more effectively in day-to-day life. A 2020 study, for instance, found that in a large sample of children and adults with ADHD, those who were taking stimulant medication were at a 28 percent lower risk of attempting suicide than those who were untreated.

The researchers caution, however, that suicide risk did appear to increase slightly in the first 3 months of using stimulant medication. They speculate that this may be due to the severity of problems in the months leading up to treatment, rather than the treatment itself. Further, too high a dose may also cause agitation or anxiety, which could exacerbate pre-existing suicidal thoughts. Since the positive effects of treatment may not appear immediately, the researchers advise that clinicians closely monitor patients and ask about suicidal thoughts during the early months of treatment.

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