Data on homelessness is all over the place and not easily tweeted, but this report lists mental health and drug addiction as the *least* likely causes of homelessness. Most likely causes are: foreclosure, domestic violence, lack of affordable housing, unemployment and low wages.
Totally false. There IS a permanent underclass of mentally ill and addicts, but in fact a huge amount of homelessness is composed of ppl who were mid-class or even rich & had several catastrophes happen at once (usually 2 of: divorce, job loss, death, and/or serious illness)