It would be useful to know what health issues people are suffering from before giving advice in Topic Discussions. Some people put the info into their profile, others don't. Maybe a separate field with the title Health Issues where people could list things like PCOS, Diabetes, Crones, High Blood Pressure, PKU, severe arthritis, etc. would remind people that this information is important for others to know.
I like the disclaimer at the bottom of topics that reminds people that comments should not be considered medical advice. I usually look at the OP's profile to see if I can find health concerns listed and scan the topic responses in case they have disclosed them in later comments before I comment. Many times this information has lead me to say see a doctor because I feel any other advice would be irresponsible.