Maybe a full continuum of organ disease.
[ul][li]Lung disease[/li][/ul]
Caused by excess amounts of smoked drugs. Gives you asthma.
[ul][li]Heart disease[/li][/ul]
Caused by insufficient amounts of salt or excessive quantities of junk food. Makes you go unconscious when running away from zombies for long periods of time.
[ul][li]Liver disease[/li][/ul]
Caused by excessive consumption of tylenol and alcohol. Makes you heal slower and reduces your overall health. Detected by yellowing of skin.
[ul][li]Kidney disease[/li][/ul]
Caused by excessive thirst. Makes it so that you get less sleep than normal by sleeping, and if you fall unconscious due to lack of sleep from this, it kills you.
[ul][li]Pancreas[/li][/ul]
Causes the diabetes we’ve already mentioned.
[/list]