| Rank | Board name and description | Posts | Members |
| 1 | Allnurses.com Nurses discussion forums | 2572754 | 256964 |
| 2 | Hyster Sisters Women community for issues related to GYN diseases and complications | 2346519 | 128967 |
| 3 | Acne.org Message Boards Acne problems discussion forum | 2093598 | 68026 |
| 4 | Nedug Free medical consultation forum (in russian) | 1851089 | 15124 |
| 5 | Ovusoft Parenthood and pregnancy message boards | 1462059 | 14908 |
| 6 | She Knows Pregnancy discussion and advice message boards | 1209135 | 27945 |
| 7 | GeoParent Community focussed on family life, parenting and pregnancy | 1206128 | 11085 |
| 8 | Sober Recovery Alcoholism and Addictions help forums | 988129 | 40810 |
| 9 | SaniHelp Health message board (in Italian) | 838335 | 41888 |
| 10 | ePharmacyWatch Forum about buying prescription drugs online and telemedicine | 678293 | 117902 |
| 11 | PASS support boards Post abortion support forums | 581038 | 9889 |
| 12 | Braintalk Communities Online patient support groups for neurology | 243364 | 26626 |