A Doctor's Guide to Online Medical Advice
California gynecologist Dr. Jen Gunter has a regular column in the Marin Independent Journal. This recent piece offers some good tips about how to sort out the signal and noise in online medical advice.
Dr. Gunter also has a lively Twitter account where she takes on medical claims in popular media (most notably, on Gwyneth Paltrow's GOOP website) and links to her own and others' work for health care consumers.