The current custom off-topic close reason for medical advice is the following
Personal medical questions are off-topic on Biology. We can not safely answer questions for your specific situation and you should always consult a doctor for medical advice.
I propose to change it to include health advice:
Personal medical questions and health advice are off-topic on Biology. We can not safely answer questions for your specific situation and you should always consult a doctor for medical advice.
As discussed in this previous meta post, I think health questions are not a good fit for the site and should be closed. This concerns mostly questions like "Is X healthy?" that are not about understanding biological mechanisms.
If there are no objections, I'll change the close reason to my proposed new wording. I'm open to any suggestions on a better wording, or any other feedback on the issue.