Iatrogenic disease map: 262 healthcare causes, 12 categories, 16 shared mechanisms
Iatrogenic Contributing Factors to Disease
TrialSite News (Opinion Article), Oct. 20, 2026 - - -PDF, 112 pages
Ronald N. Kostoff
Summary by Claude Opus 5.5 - November 2026
Note: Iatrogenic: describes illness, injury or other harm caused by medical care itself, such as drugs, surgery, devices, tests or hospital stays, rather than by the patient’s underlying condition.
Bottom line: This 244-page op-ed catalogues the ways healthcare itself can cause or worsen disease: 262 numbered "contributing factors" in 12 categories, each linked to diseases and proposed biological mechanisms. It is a useful map of where to look, not evidence of how often harm happens. Vitamin D comes up in only three places.
What it is: An opinion article on TrialSite News, not peer-reviewed and with no new data. Kostoff refined a query through several AI packages, then gave it to ChatGPT and Claude; the body text is mostly the ChatGPT response. The paper calls itself a narrative, mechanism-oriented synthesis, not a systematic review or meta-analysis. For scale, it cites a Global Burden of Disease analysis estimating 12.5 million new cases and 122,330 deaths worldwide from adverse effects of medical treatment in 2021 Zhang 2025.
The 12 categories at a glance**
| Category | Entries | Examples | Vitamin D mentioned? |
|---|---|---|---|
| A. Drugs | 96 | Antibiotics, steroids, PPIs, anticonvulsants, chemotherapy, opioids | Yes – anticonvulsants |
| B. Hospital-acquired infections | 16 | Catheter infections, C. difficile, MRSA, contaminated endoscopes | No |
| C. Surgery and anesthesia | 31 | Nerve injury, post-op delirium, bariatric and neck surgery, cesarean | Yes – bariatric surgery |
| D. Implants and devices | 12 | Metal-on-metal hips, surgical mesh, breast implants, stents | No |
| E. Radiation and imaging agents | 7 | Radiotherapy, CT scans, iodinated contrast, gadolinium | No |
| F. Blood products and transplants | 15 | Transfusion lung injury, iron overload, prion transmission | No |
| G. Vaccines | 30 | mRNA myocarditis, VITT clots, Guillain-Barré | No |
| H. Hospital and ICU stays | 19 | Deconditioning, ICU weakness, falls, delirium, ventilator injury | No |
| I. Overdiagnosis and test cascades | 9 | Incidentalomas, false-positive screening, nocebo | No |
| J. Errors and systems | 7 | Medication errors, wrong-site surgery, handoff failures | No |
| K. Product quality and contamination | 9 | Contaminated compounded drugs, nitrosamines, DEHP | No |
| L. Pregnancy and development | 11 | Thalidomide, valproate, DES, antenatal steroids | No |
| Total | 262 | 16 shared mechanism families (e.g., oxidative stress, immune reactions, microbiome disruption) | 2 entries plus the bone-disease pathway |
Where vitamin D shows up (and where it doesn't)
| Entry | What the paper says | Vitamin D link |
|---|---|---|
| A53 Enzyme-inducing anticonvulsants | Osteomalacia and bone loss; enzyme induction speeds vitamin D breakdown | Stated |
| C20 Bariatric surgery | Calcium and vitamin D deficiency with osteoporosis | Stated |
| Bone-disease pathway | Common pathway for 10 drug and surgery routes includes a calcium and vitamin D deficit | Stated |
| A21 Corticosteroids | Osteoporosis, fractures, less calcium absorbed | Not mentioned |
| A44 Proton-pump inhibitors | Low magnesium rated established; fractures rated associational | Not mentioned; magnesium is a vitamin D cofactor |
VitaminDWiki's 24 drugs review lists many more drugs that can lower vitamin D, including corticosteroids and PPIs.
Vaccines and the author's own view: The AI-written text rates most serious vaccine reactions as rare compared with the diseases prevented, and lists MMR–autism and thimerosal claims as examined and not supported. Kostoff adds a bracketed comment disagreeing: he argues COVID-19 mRNA vaccine harms are grossly under-reported. In his Final Thoughts he also argues that drug combinations are essentially untested and that the medical literature has a pro-industry bias.
What this does NOT show
- No new data or analysis: the evidence grades (E, P, H, C) are the AI's own judgments, not the result of a formal review.
- References were not checked claim by claim; the author's note calls them "leads for verification, not an exhaustive reference list."
- The count of 262 reflects how entries were split, not how common or serious each harm is; many entries give no absolute rates.
- The AI-written text states that for nearly every listed treatment, benefit exceeds expected harm in properly selected patients; only errors, low-value care and contaminated products have little offsetting benefit.
- Nothing on vitamin D dose, form or 25(OH)D level, and no test of vitamin D as protection against any listed harm.
- The query and the full Claude and ChatGPT responses are separate appendix PDFs (see Sources).
Sources:
- Zhang 2025 GBD adverse effects of medical treatment
- Appendix 1 – AI query
- Appendix 2 – Claude response
- Appendix 3 – ChatGPT response
Related in VitaminDWiki
- Drugs that create a vitamin D deficiency
- Interaction of drugs with Vitamin D, Magnesium, Vitamin B12, Selenium, etc
- Review of vitamin D interaction with drugs – Jan 2014
- VitaminDWiki: 24 drugs that typically reduce Vitamin D
- Sepsis is both prevented and treated by Vitamin D - many studies
- Bariatric Surgery and Vitamin D - many studies
- ICU patients typically benefit from 300-500,000 IU of Vitamin D - many studies
- Vitamin D is needed before many surgeries – many studies and RCTs
- Rotator cuff and Vitamin D - several studies
- Critically ill patients who received 300,000 IU of Vitamin D were 40% less likely to die within a month - meta-analysis
- Vitamin D before surgery helped again (Thyroid in this case) - meta-analysis
- Vitamin D and the Critically Ill - meta-analysis
- ICU patients 30 % less likely to die if have enough vitamin D – meta-analysis
- 4 fewer days in hospital after hip or knee replacement if good level of vitamin D
- Sepsis is fought by Vitamin D in 9 ways