What's the most lethal mental illness?

Asked by: Daija Hyatt Jr.  |  Last update: February 21, 2026
Score: 4.7/5 (31 votes)

The most lethal mental illness is Anorexia Nervosa, which has the highest mortality rate of any psychiatric disorder, primarily from medical complications of starvation and suicide, though substance use disorders also carry significant risks. While depression, bipolar disorder, and schizophrenia are often thought of as deadliest, research points to eating disorders as having the highest premature death rates, with anorexia being the most severe.

What are the most severe mental illnesses?

List of Serious Mental Illness

  • Schizophrenia.
  • Bipolar disorder.
  • Major depression.
  • Severe anxiety disorders, including post-traumatic stress disorder (PTSD)
  • Borderline personality disorder.
  • Obsessive-compulsive disorder (OCD) when it leads to significant impairment.

What is the deadliest mental health illness?

Out of all the mental disorders including depression, anxiety, schizophrenia, and bipolar disorder, which do you think is the deadliest? A review of nearly fifty years of research confirms that Anorexia Nervosa has the highest mortality rate of all mental illnesses (Arcelus, Mitchel, Wales, & Nelson, 2011).

What mental illness has the highest mortality?

Eating disorders (e.g., anorexia nervosa, bulimia nervosa) are associated with high premature mortality and are generally considered to be among the most lethal of all psychiatric disorders (1).

What is the hardest mental health illness to live with?

There's no single "hardest" mental illness, as experiences vary, but Schizophrenia, Borderline Personality Disorder (BPD), Bipolar Disorder, and severe Eating Disorders (like Anorexia Nervosa) are often cited as extremely challenging due to their profound impact on reality, emotions, relationships, and daily functioning, often involving symptoms like psychosis, severe mood swings, intense instability, and distorted self-perception. 

Anoreixa is the most lethal mental illness

40 related questions found

Is BPD or bipolar worse?

One isn't worse than the other. They're both lifelong mental health conditions that require medication and therapy. It's also possible to be diagnosed with both BPD and bipolar disorder. In those instances, it can be even more difficult to treat because the conditions can aggravate each other.

What are the top 5 most painful mental illnesses?

The Most Painful Mental Illness

  • Depression.
  • Anxiety.
  • Bipolar Disorder.
  • Borderline Personality Disorder (BPD)
  • Schizophrenia.
  • Eating Disorders.
  • Post-Traumatic Stress Disorder (PTSD)

Is BPD the deadliest mental disorder?

The symptoms of BPD gradually improve after age 30 if individuals survive. As many 6% of people with BPD commit suicide, making it among the deadliest mental illnesses, along with depression, anorexia nervosa, and bipolar disorder.

What mental illness causes the most suffering?

Borderline personality disorder (BPD) has long been believed to be a disorder that produces the most intense emotional pain and distress in those who have this condition. Studies have shown that borderline patients experience chronic and significant emotional suffering and mental agony.

Does mental illness reduce life expectancy?

People with serious mental illness die up to 20 years younger because of preventable physical disorders. In England, the NHS has attempted to address this issue by incentivising physical health monitoring programmes to reduce risk factors in those who are deemed to be at high risk of future cardiovascular events.

What is the saddest mental illness?

Depression is a mood disorder that causes a persistent feeling of sadness and loss of interest. Also called major depressive disorder or clinical depression, it affects how you feel, think and behave and can lead to a variety of emotional and physical problems.

What disorder causes the most deaths?

Leading Causes of Death

  • Heart disease: 680,981.
  • Cancer: 613,352.
  • Accidents (unintentional injuries): 222,698.
  • Stroke (cerebrovascular diseases): 162,639.
  • Chronic lower respiratory diseases: 145,357.
  • Alzheimer's disease: 114,034.
  • Diabetes: 95,190.
  • Nephritis, nephrotic syndrome, and nephrosis: 55,253.

How many mental illnesses can one person have?

More than half of people diagnosed with one psychiatric disorder will be diagnosed with a second or third in their lifetime. About a third have four or more.

What is the number one deadliest mental illness?

Anorexia Nervosa – Highest Mortality Rate of Any Mental Disorder: Why? While all eating disorders are dangerous mental health conditions, anorexia nervosa (AN) has the unfortunate distinction of being the deadliest eating disorder—and, by some accounts, the deadliest psychiatric disorder.

What are the 10 most disabling mental illnesses?

Mood disorders (major depressive disorder, mania, and dysthymic disorder), anxiety disorders (post-traumatic stress disorder, panic disorder, agoraphobia, social phobia, specific phobia, obsessive-compulsive disorder, and generalized anxiety disorder), alcohol use disorder, illicit drug use disorder, intermittent ...

Is PTSD a serious mental illness?

Post-traumatic stress disorder can disrupt your whole life — your education, job, how well you get along with others, physical health and enjoyment of everyday activities. Having PTSD also may raise your risk of other mental health problems, such as: Depression and anxiety disorders. Issues with drugs or alcohol use.

What mental illness is hardest to treat?

There's no single "hardest" mental illness to treat, as it varies by individual, but Schizophrenia, Borderline Personality Disorder (BPD), and Treatment-Resistant Depression (TRD) are consistently cited as highly challenging due to severe symptoms, impact on functioning, and resistance to standard therapies, often requiring lifelong, multifaceted care. Schizophrenia involves delusions and hallucinations, BPD extreme emotional instability, and TRD failure to respond to typical treatments, with many also struggling with severe PTSD, eating disorders, and substance use disorders. 

Why is BPD life expectancy so low?

BPD patients, especially those that do not recover, are at elevated risk of premature death, due to suicide or other causes [50], related to an unhealthy and sometimes reckless lifestyle [51]. Furthermore, there are age differences in the expression of BPD symptoms.

What is the most painful emotion?

These can create tremendous suffering. However, these are life events that come and go. We generally go through the normal stages of grief and hurt, but there's an opportunity to move on. In my practice, the most painful human experience is the feeling of shame.

Who is the BPD favorite person?

The BPD favorite person can be anyone, but it's often a romantic partner, family member, good friend, or another supportive person (like a coach, therapist, or teacher.) This person may become the source of all happiness and validation (potentially leading to relationship burnout for the other partner.)

What's the most painful mental illness?

People that have BPD often experience intense emotions. They can think and behave in ways that are not normal. People with borderline personality disorder find that it impacts every facet of their lives. The condition can damage relationships with family, friends, and colleagues.

Can someone beat BPD?

Yes, you can overcome BPD, as it's considered highly treatable, with many people achieving remission (no longer meeting diagnostic criteria) through specialized therapies like Dialectical Behavior Therapy (DBT) and support, allowing them to build stable, productive lives, though symptoms can resurface, making ongoing management key.
 

What is the #1 worst pain?

There's no single "number one" pain, as it's subjective, but Cluster Headaches are often cited as the most severe, with extreme, stabbing pain, while Trigeminal Neuralgia, known as the "suicide disease," causes electric shock-like facial pain, and intense labor or kidney stones are also contenders for the worst pain, highlighting different types of acute and chronic suffering. 

What age does BPD peak?

BPD symptoms typically emerge in adolescence, often peaking in the late teens to mid-20s, a period marked by intense emotional instability, impulsivity, and identity struggles, though a specific age peak is debated, with some research pointing to around age 29.4 for feature intensity, while early adulthood (20s) is generally the most disruptive time for functioning, with symptoms generally improving but often persisting into adulthood. 

What's the hardest illness to live with?

Here's a list of debilitating diseases that significantly change the lives of millions of people:

  1. Alzheimer's and Dementia.
  2. Amyotrophic Lateral Sclerosis (ALS) – Lou Gherig's Disease. ...
  3. Parkinson's Disease. ...
  4. Multiple Sclerosis (MS) ...
  5. Scleroderma. ...
  6. Cystic Fibrosis. ...
  7. Chronic Obstructive Pulminary Disease (COPD) ...
  8. Cerebral Palsy. ...