Bullying is a significant risk factor for suicidal thoughts and suicide attempts, particularly among young people. Students who are bullied are roughly 75% more likely to experience suicidal thoughts and twice as likely to attempt suicide compared to those who are not bullied, even after accounting for other risk factors like pre-existing mental health conditions. The connection holds across every form of bullying, from verbal harassment to online abuse, and the effects can persist for decades.
How Much Bullying Increases Suicide Risk
A large study of school students found that being bullied in the past 30 days nearly doubled the odds of a suicide attempt, with an odds ratio of 2.01. That held true after researchers controlled for demographics, lifestyle, academic performance, and mental health status. Every type of bullying carried elevated risk: verbal bullying doubled the odds of an attempt, relational bullying (social exclusion, rumor-spreading) increased it by about 2.3 times, and physical bullying nearly tripled it.
Cyberbullying carried some of the highest risks. Students who experienced online harassment were roughly 2.8 times more likely to attempt suicide than those who weren’t bullied. A cross-national study spanning six countries found that in some populations, cyberbullying alone was associated with even higher odds of a suicide attempt than traditional face-to-face bullying. In India, for example, cyber victims had dramatically elevated risk compared to those experiencing only in-person bullying.
The worst outcomes appeared among young people experiencing both online and in-person bullying simultaneously. Across nearly every country studied, this combined victimization group had the highest odds of attempting suicide. That said, researchers emphasize that it is the experience of being victimized itself, not the specific platform, that drives the risk.
Why Bullying Creates Suicidal Thoughts
The primary psychological pathway runs through social disconnection. When someone is repeatedly targeted by peers, they often develop a deep sense of not belonging, of being fundamentally cut off from the people around them. Longitudinal research tracking adolescents over time has confirmed this sequence: bullying leads to feelings of social disconnection, which then predict suicidal thoughts and attempts months later. This isn’t just correlation. The timeline shows that the isolation comes first, and the suicidal thinking follows.
Bullying also erodes self-worth. Victims frequently internalize the messages they receive, developing low self-esteem and, in severe cases, a belief that they are a burden to the people around them. This sense of being a liability to others is one of the strongest predictors of suicidal desire in psychological research.
There’s a biological dimension as well. Chronic peer stress can alter how the body’s stress-response system functions. Research from Harvard found that adolescent girls who experienced high levels of peer stress were more likely to have suicidal thoughts regardless of their biology. But those who also had a blunted stress hormone response, meaning their bodies had essentially stopped reacting normally to stress after prolonged exposure, were the ones most likely to actually attempt suicide. A normally functioning stress response appears to help people cope and inhibit impulsive behavior during crises. When that system is worn down by chronic bullying, the biological brakes on dangerous behavior may weaken.
Effects That Last Into Adulthood
The impact of childhood bullying doesn’t end when school does. A 50-year nationwide cohort study found that bullying victimization in childhood was associated with increased odds of dying by suicide in adulthood. For each standard deviation increase in the severity of childhood bullying, the odds of suicide death rose by 29%. A separate study from a British birth cohort found that adults who had been frequently bullied as children reported higher rates of feeling that life wasn’t worth living well into their forties, compared to those who hadn’t been bullied.
Research from Finland reinforced this pattern. Children who were bullied at age 8 had elevated rates of suicide attempts requiring hospitalization and of suicide deaths later in life, even after accounting for childhood depression and behavioral problems. These findings suggest that bullying functions as an early adverse experience, setting a trajectory of risk that can extend across the lifespan if unaddressed.
Who Faces the Greatest Risk
Young people who are both bullied by others and engage in bullying themselves, sometimes called “bully-victims,” face the highest risk for suicidal thoughts and behavior. This dual role is associated with greater psychological distress than either bullying or being bullied alone.
LGBTQ+ youth are disproportionately affected. CDC data shows that 29% of LGBTQ+ students report being bullied at school, compared to 16% of their cisgender and heterosexual peers. The gap in suicidal thinking is even wider: 41% of LGBTQ+ students have seriously considered suicide, versus 13% of cisgender and heterosexual students. Transgender students and those questioning their gender identity report the highest rates of victimization, unstable housing, and suicidal thoughts.
Other factors that compound the risk include a history of depression or other mental health conditions, alcohol or substance use, impulsive or aggressive tendencies, and social isolation. When bullying intersects with any of these, the danger escalates.
Warning Signs in a Bullied Young Person
Withdrawal from friends, activities, or family is one of the most consistent warning signs. A young person who was previously social but becomes increasingly isolated after bullying experiences may be moving toward crisis. Other markers include persistent sadness or irritability that doesn’t lift, declining academic performance, changes in sleep or eating patterns, giving away prized possessions, and talking about being a burden or feeling hopeless.
Increased aggression or substance use can also signal risk, particularly in young people who don’t have other outlets for their distress. Any mention of wanting to die or not wanting to exist, even if it sounds casual or offhand, should be taken seriously.
What Actually Reduces Risk
School-based anti-bullying policies can make a measurable difference, but the specifics of those policies matter enormously. Research on lesbian and gay youth found that inclusive anti-bullying policies, ones that explicitly named sexual orientation as a protected category, reduced the odds of a suicide attempt by 82%. Generic anti-bullying policies that didn’t specifically mention sexual orientation had no statistically significant protective effect for these students.
The geographic data is striking. In counties where school districts were least likely to adopt inclusive policies, 31% of lesbian and gay adolescents had attempted suicide in the past year. In counties with the most inclusive policies, that figure dropped to 17%. The policies themselves likely work through multiple channels: reducing actual bullying, signaling to vulnerable students that they are valued, and creating environments where young people feel safer seeking help.
Strong social connections are the most consistent buffer against bullying-related suicidal risk. Because the pathway from bullying to suicidal thinking runs largely through feelings of disconnection, anything that strengthens a young person’s sense of belonging, whether that’s a supportive family relationship, a trusted teacher, a friend group, or a community organization, directly interrupts the most dangerous part of the process. A bullied young person who still feels connected to at least one person or group retains a critical layer of protection.