MedHelp is very useful forums to join, engaging discussion with the web-communities about health matters. I find the health tracker is very useful as well to track your daily routine health condition. See my tracker result how terrible is my mood and anxiety, this has got to be changed sooner or later. Damn!!
Other Health trackers can be found such as:
My Diet Diary (iPhone)
Pic Healthy (iPhone)
Complete Blood Count
Sleep On It (iPhone)
Moody Me (iPhone)
There are more you can find on MedHelp