What makes teens vulnerable to suicide?

Most teens who attempt or die by suicide have a mental health condition or substance abuse problem. As a result, they have trouble coping with the stress of being a teen, such as dealing with rejection, failure, breakups and family turmoil. They might also be unable to see that they can turn their lives around — and that suicide is a permanent solution to a temporary problem.

What are the risk factors for teen suicide?

Factors that increase the risk of teen suicide include:

Having a psychiatric disorder, such as depression
A history of suicide attempts or a family history of suicidal behavior
A family history of mood disorder
A history of physical or sexual abuse
Exposure to violence, such as being injured or threatened with a weapon
Other factors, when combined with the above, also can increase the risk of teen suicide, including:

Access to means, such as firearms
Loss or conflict with close friends or family members
Use of alcohol or drugs
Becoming pregnant
Social isolation
Exposure to suicide

http://www.mayoclinic.org/healthy-lifestyle/tween-and-teen-health/in-depth/teen-suicide/art-20044308