Risk factors
By Mayo Clinic staffCertain factors may increase your risk of developing mental health problems, including:
- Having a biological (blood) relative, such as a parent or sibling, with a mental illness
- Experiences in the womb — for example, having a mother who was exposed to viruses, toxins, drugs or alcohol during pregnancy
- Experiencing stressful life situations, such as financial problems, a loved one's death or a divorce
- Having a chronic medical condition, such as cancer
- Experiencing brain damage as a result of a serious injury (traumatic brain injury), such as a violent blow to the head
- Having traumatic experiences, such as military combat or being assaulted
- Use of illegal drugs
- Being abused or neglected as a child
- Having few friends or few healthy relationships
- Having a previous mental illness
Mental illness is common. About 1 in 4 adults has a mental illness in any given year. About half of U.S. adults will develop a mental illness sometime in their lives. Mental illness can begin at any age, from childhood through later adult years.
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