FDA's official public record on diet-associated dilated cardiomyopathy (DCM) in dogs, 2014-2024. Sourced from three official FDA documents extracted via Tavily (Akamai bot detection blocked direct curl access from Tokyo VPS).
Documents extracted (3 official sources)
| # | Title | Date | URL |
|---|---|---|---|
| 1 | FDA Outbreaks: DCM Investigation (consumer-facing page) | last updated 2022 | fda.gov/animal-veterinary/outbreaks-and-advisories/fda-investigation-potential-link-between-certain-diets-and-canine-dilated-cardiomyopathy |
| 2 | FDA Vet-LIRN Update on Investigation into Dilated Cardiomyopathy | 2019-04-30 cutoff | fda.gov/animal-veterinary/science-research/vet-lirn-update-investigation-dilated-cardiomyopathy |
| 3 | FDA KSU Science Forum slides | 2020-09-29 | ksvdl.org/.../FDA_KSU-Science-Forum-slides_09-29-2020.pdf |
Timeline
| Year | Event |
|---|---|
| 2014 | 1 early case report (different profile from later) |
| early 2015 | FDA begins receiving DCM cases suspected diet-related |
| 2018 (uptick) | Sharp increase in well-documented cases |
| 2018-07-12 | First FDA CVM Update — public announcement of investigation |
| 2019-02-19 | Follow-up update |
| 2019-04-30 | Vet-LIRN data cutoff (340 dogs, 9 cats reviewed) |
| 2019-06-27 | Follow-up update |
| 2019-11 → 2020-07 | "Group Two" cases (5 full + 30 partial recovery) |
| 2020-09-29 | KSU Science Forum (FDA presentation): >1100 cases reported, >150 Vet-LIRN investigated |
| 2022-11-01 | FDA added count of reports as of Nov 1 2022 (page later retired) |
| ~2022-2024 | FDA ends routine public updates (per AVMA) |
Diet characteristics (FDA analysis, 1/1/2014–4/30/2019)
| Characteristic | % of reported products |
|---|---|
| Grain-free (no corn/soy/wheat/rice/barley/other grains) | 91% |
| Peas and/or Lentils (incl. chickpeas, beans) | 93% |
| Peas | 89% |
| Lentils | 62% |
| Potatoes / Sweet Potatoes | 42% |
Animal proteins in reported diets: chicken, lamb, fish most common; atypical sources included kangaroo, bison, duck. No single animal protein source was predominant.
Vet-LIRN data (as of 2019-04-30)
| Metric | Count |
|---|---|
| Gross necropsies reviewed | 19 (13 from FDA Safety Reporting Portal + 1 pending) |
| Gross heart examinations completed | 13 |
| Tissues collected for histopathology | 10/13 necropsies (liver, kidney, gastrocnemius, eye, lung, spleen) |
| Medical records reviewed | 340 dogs + 9 cats |
| Confirmed DCM | 202 dogs + 6 cats |
| Dogs progressing to CHF | 61% (n=123) |
| Cats progressing to CHF | 100% (n=6) |
| Valvular degeneration (dogs) | 15% (n=32) |
| Atrial fibrillation (dogs) | 12% (n=24) |
| Dogs with allergies/sensitivities history | 38% (n=77) |
Vet-LIRN case investigation groups (KSU Forum 2020)
| Group | Period | Count | Recovery |
|---|---|---|---|
| Group One | 2018-01 → 2019-04 | 121 dogs | 107 fully or partial recovery |
| Group Two | 2019-11 → 2020-07 | (subset) | 5 full recovery + 30 partial recovery |
| Total reported to FDA | through 2020-09 | >1,100 | — |
| Vet-LIRN investigated | through 2020-09 | >150 | — |
Recovery pattern: Cardiac function (LV systolic function, LVIDd normalization) improved after discontinuing reported diets + medical treatment. 96% of recovery diets in Group One were grain-containing (only 3 were hydrolyzed protein: 2 corn starch, 1 brewer's rice).
Doberman Pinscher case example (Vet-LIRN)
Two 4-year-old Doberman Pinscher littermates (1 castrated male, 1 spayed female) on grain-free poultry+egg diet for ~2 years:
- Male: presented first with dyspnea, weight loss, cough →
congestive heart failure → furosemide + pimobendan → DCM confirmed by echocardiogram → enalapril + spironolactone
- Female: concurrent presentation, slight hyporexia →
occult DCM → treated with same regimen
- Both improved after diet change to grain-inclusive
End of routine updates (~2022)
FDA ended routine public updates on the investigation (per AVMA news, 2022). The official page remained accessible through 2022 with a Nov 1 2022 case count, but was later retired from public domain (404 as of 2026-07-20).
Access methodology note
Direct curl from Tokyo VPS (206.237.120.227) to fda.gov is blocked by Akamai Bot Manager (302 → abuse-detection-apology.html, even with full Chrome 126 user-agent + cookie jar). Wayback Machine CDX has zero cardiomyopathy snapshots (FDA robots.txt blocks crawlers). Tavily extract works because it routes through a different IP class than direct VPS access.
Source documents
| Title | URL |
|---|---|
| FDA DCM Investigation page | fda.gov/animal-veterinary/outbreaks-and-advisories/fda-investigation-potential-link-between-certain-diets-and-canine-dilated-cardiomyopathy |
| FDA Vet-LIRN Update | fda.gov/animal-veterinary/science-research/vet-lirn-update-investigation-dilated-cardiomyopathy |
| FDA KSU Forum slides 2020-09-29 | ksvdl.org/resources/documents/dcm-forum/FDA_KSU-Science-Forum-slides_09-29-2020.pdf |
| AVMA (FDA end of updates) | avma.org/news/until-more-science-available-fda-will-end-public-updates-potential-link-between-certain-diets |
Source: recalls/fda-dcm-source.json (3 docs extracted via Tavily on 2026-07-20).