I was reading a History & Physical the other day, and the physician was describing the ongoing health problems. Under the topic of "Substance Abuse", he described this as, "None, other than cigarettes and food". I think he nailed it on the head.
Cigarettes and Food
I saw this in a chart today
Health habits; described this way:
“No substance abuse
Except cigarettes and food”,
Clearly bad enough themselves
To allow illness to intrude.
Many sorts of health issues
Go hand in hand, with hand to mouth,
And if good health is towards the north
These bad habits will lead you south.