well i don't know that there would be any "long term" besides what is already occuring. Long term depression sufferers usually have random aches and pains and have less resistance to disease. Depression causes you (usually) to have interrupted sleep or less sleep in general which greatly reduces your immune system's natural defenses.

another side note would be that depression is followed alongside by a lack of the chemical seratonin. its not necessarily that this causes your depression, but it happens alongside it. seratonin helps you deal with pain. thus, a lack of it would cause you to have less defenses against pain.

not to mention the loss of concentration and energy that comes along with depression. i also read somewhere that there is now a link being studied between long term depression and a rise in stroke incidences.

i think overall, the physical symptoms would go away when the depression does. but what makes this so difficult, is that its not overnight. you almost have to force yourself to be happy to get those results, to then motivate you. because youre not going to feel the physical benefits before you stop being depressed. but how can you stop being depressed if you feel horrible from head to toe? its a catch 22 and a very hard cycle to break. i really hope you have better luck than most at this.