Homeless people face with health problems sooner in life than people with homes. 

Homeless people are dealing with problems the majority of us can't understand. People as young as 30(maybe even lower) are dealing with health problems that a 60-70 year old would be dealing with. Things like arthritis and strokes.

Due to the lack of shelter, bathing and overall wellness of the body, there is an accelerated rate of health issues for the homeless. Lack of a comfortable place to sleep. Constant exposure to the sun. 

Many homeless people fail to acquire things like medication. Whether it would be diabetes or high blood pressure, it is too difficult a task for some. Besides not getting medication, there are plenty of other problems homeless people deal with. For example,for the majority of homeless people there is no therapy for mental health issues.