We are prisoners of what They do not see

Youthful Suicide Attempts a Marker for Lifelong Troubles

A study that tracked more than 1,000 New Zealanders from birth to age 38 has found that those who attempted suicide before age 24 have been plagued by more health and psychiatric issues and had more economic difficulties later in life. 
In their 30s, these people were twice as likely as their peers to develop metabolic syndrome and have significantly higher levels of systemic inflammation, both markers of higher risk for cardiovascular disease.

Study subjects who had attempted suicide sometime before age 24 had been found to be more impulsive and have more conduct disorders and depression when they were children, well before the attempts. But it is difficult to say where their life-troubles come from, Goldman-Mellor said. "Our study did control for the fact that they have more psychiatric issues, but we may have missed some other underlying factors."
Goldman-Mellor, an epidemiologist who has studied links between economic conditions and suicidal behavior, notes that the New Zealand cohort was coming of age in an economic recession.

Yes, well poor economic conditions lead to poor nutrition, more hours spent working and less sleeping, and less access to medical and dental care.  That  "underlying factor" is untreated lifelong somatic illness.