Canonical segment URLs exist only for observed category/shape pairs.
Machine Relations Index
Observed shapes6 Published6 Collecting0 Release2026-10-16
Consumer Health · Machine Relations Index category
Which sources AI engines cite for Consumer Health questions
In the October 2026 release of the Machine Relations Index (mri_score_v2.1+2026-10-16+676547a595a3), these are the sources AI answer engines cited most often for each of the 6 Consumer Health question shapes, each ranked on that shape's own observed runs. This category has 6 observed question-shape segments in the current public release. Each segment keeps its own observed-run denominator and dates; this page does not average rates across shapes. Observed runs are answer runs, not questions: every segment repeats a small set of distinct questions across engines and dates, so a run count is not a count of independent questions.
Top sources by question shape
The sources engines cite most, shape by shape
A rate is the share of the shape's observed answer runs that cited the source; rank is the source's place on that shape's full leaderboard.Best tools
Example pattern: best consumer health tools. 221 observed runs across 10 dates.
| Rank | Source | Source role | Citation rate | Cited runs |
|---|---|---|---|---|
| #1 of 406 | Healthline | Editorial publication | 41.63% | 92 of 221 |
| #2 of 406 | Sleepfoundation.org | Academic and government source | 26.70% | 59 of 221 |
| #3 of 406 | YouTube | Search or media platform | 22.17% | 49 of 221 |
| #4 of 406 | Healthcentral.com | Other observed source | 21.72% | 48 of 221 |
| #5 of 406 | Yahoo News | Editorial publication | 18.55% | 41 of 221 |
How buyers choose
Example pattern: how to choose consumer health tools. 219 observed runs across 10 dates.
| Rank | Source | Source role | Citation rate | Cited runs |
|---|---|---|---|---|
| #1 of 441 | NIH | Academic and government source | 23.74% | 52 of 219 |
| #2 of 441 | Healthline | Editorial publication | 18.26% | 40 of 219 |
| #3 of 441 | YouTube | Search or media platform | 16.44% | 36 of 219 |
| #4 of 441 | Herba-medica.si | Other observed source | 12.79% | 28 of 219 |
| #5 of 441 | Optibacprobiotics.com | Other observed source | 12.79% | 28 of 219 |
Is it worth it
Example pattern: is consumer health software worth it. 219 observed runs across 10 dates.
| Rank | Source | Source role | Citation rate | Cited runs |
|---|---|---|---|---|
| #1 of 276 | NIH | Academic and government source | 32.42% | 71 of 219 |
| #2 of 276 | Uclahealth.org | Other observed source | 31.96% | 70 of 219 |
| #3 of 276 | Healthline | Editorial publication | 28.31% | 62 of 219 |
| #4 of 276 | WebMD | Editorial publication | 26.94% | 59 of 219 |
| #5 of 276 | Harvard.edu | Academic and government source | 26.48% | 58 of 219 |
Problem-first research
Example pattern: how to solve consumer health problems. 220 observed runs across 10 dates.
| Rank | Source | Source role | Citation rate | Cited runs |
|---|---|---|---|---|
| #1 of 272 | Clevelandclinic.org | Academic and government source | 30.45% | 67 of 220 |
| #2 of 272 | Mayoclinic.org | Other observed source | 28.18% | 62 of 220 |
| #3 of 272 | Ubiehealth.com | Other observed source | 22.27% | 49 of 220 |
| #4 of 272 | Healthline | Editorial publication | 21.82% | 48 of 220 |
| #5 of 272 | Goodrx.com | Other observed source | 20.00% | 44 of 220 |
Top lists
Example pattern: top consumer health platforms. 221 observed runs across 10 dates.
| Rank | Source | Source role | Citation rate | Cited runs |
|---|---|---|---|---|
| #1 of 467 | Thefeed.com | Other observed source | 27.15% | 60 of 221 |
| #2 of 467 | Forbes | Editorial publication | 24.89% | 55 of 221 |
| #3 of 467 | Healthline | Editorial publication | 19.91% | 44 of 221 |
| #4 of 467 | Garage Gym Reviews | Other observed source | 15.38% | 34 of 221 |
| #5 of 467 | Yahoo News | Editorial publication | 14.03% | 31 of 221 |
Comparisons
Example pattern: consumer health platform A vs B. 221 observed runs across 10 dates.
| Rank | Source | Source role | Citation rate | Cited runs |
|---|---|---|---|---|
| #1 of 266 | Healthline | Editorial publication | 28.05% | 62 of 221 |
| #2 of 266 | YouTube | Search or media platform | 25.34% | 56 of 221 |
| #3 of 266 | Cymbiotika.com | Other observed source | 17.65% | 39 of 221 |
| #4 of 266 | Nutrisparc.com | Other observed source | 16.74% | 37 of 221 |
| #5 of 266 | Medical News Today | Editorial publication | 15.84% | 35 of 221 |
Published segments met the release evidence floor.
Collecting segments expose sample progress, not mature leaderboards.
mri_score_v2.1+2026-10-16+676547a595a3
Question shapes
Separate denominators by segment
| Question shape | State | Observed runs | Distinct questions | Run dates | Cited domain observations | Canonical segment |
|---|---|---|---|---|---|---|
| Best tools | Published | 221 | 7 (5 paraphrase groups) | 10 | 406 | Open leaderboard |
| How buyers choose | Published | 219 | 7 (5 paraphrase groups) | 10 | 441 | Open leaderboard |
| Is it worth it | Published | 219 | 7 (5 paraphrase groups) | 10 | 276 | Open leaderboard |
| Problem-first research | Published | 220 | 7 (5 paraphrase groups) | 10 | 272 | Open leaderboard |
| Top lists | Published | 221 | 7 (5 paraphrase groups) | 10 | 467 | Open leaderboard |
| Comparisons | Published | 221 | 7 (5 paraphrase groups) | 10 | 266 | Open leaderboard |
Release and boundary
No pooled category score
Release mri_score_v2.1+2026-10-16+676547a595a3; methodology mri_score_v2.1; generated 2026-10-16; window 2026-05-10 to 2026-10-16; artifact 676547a595a3.
This page is a directory of observed segments. A domain's overall citation rate is not a category rate, and MRI does not publish an averaged category score in this slice.
Consumer Health buyers on AuthorityTech’s publication intelligence is a downstream practitioner projection of these segments. It is not source evidence, citation provenance, or sameAs identity for the neutral dataset.