Case series / case reportcited by the Tayebat archiveabstract only checked★ key study A-VEG-09 in-depth review
Bitter zucchini poisoning
[Food poisoning by cucurbitacines].
Overview
Jung C et al.. Dtsch Med Wochenschr 2020 · PMID 32668470 · DOI 10.1055/a-1163-9741
A woman developed bloody colitis after eating bitter zucchini; recovered in 2 days.
Does the study support the specific claim? Partly · Methodological quality: low
Plain-language summary
Study explained simply
- What did the researchers want to find out?
Report case
- How was the study done?
Case report
- How many people, animals or samples were studied?
1
- What was actually found?
Self-limiting colitis
- How large was the observed effect?
Not applicable
- What do the results mean in everyday life?
Discard bitter zucchini.
- What are the study's limitations?
Single case
- What does it say about Elawady's specific claim?
Bitter-only
- Do the results apply to Germany and Europe?
High
- What can explicitly not be concluded from this study?
Cannot show normal zucchini is harmful.
Scientific in-depth review
1. Full reference
- Authors
- Jung C, Steuber B, Schwörer H
- Journal
- Dtsch Med Wochenschr
- Year
- 2020
- Identifier
- PMID 32668470 DOI 10.1055/a-1163-9741
- Verification
- verified – PubMed E-utilities efetch, 2026-10-25
- Retracted
- no
- Corrections
- none
- Extent checked
- abstract only
- Conflicts of interest and funding
Authors declare no conflict of interest
2. Research question
Report cucurbitacin poisoning.
3. Study design and population
- Study design
- Case series / case report – Case report
- Population
One 66-year-old woman
- Country
Germany
- Period
Not stated
- Sample size
1
- Inclusion and exclusion criteria
Not applicable
4. Methods and endpoints
- Exposure / intervention
Bitter zucchini
- Comparator
None
- Endpoints
Clinical course
- Statistical methods
Not applicable
5. Actual results
- Results
Tachycardia, hypotension, somnolence, diarrhoea, haematochezia, emesis; acute colitis on ultrasound; improved with IV fluids; ate again after 2 days.
- Absolute risks
not reported
- Authors' conclusion
Cucurbitacin poisoning is rare but can occur with garden-grown produce in hot weather; bitter taste is essential for diagnosis.
6. Strengths
- Well-described
7. Weaknesses
- Single case
8. Risk of bias
- Orienting tool
- none applicable
- Type of assessment
- simplified assessment (abstract only)
- Full formal assessment
- no
- Overall risk of bias
- not assessable
- Rationale
Case report.
9. Assessment of the statistical interpretation
Not applicable.
10. Relevance to the specific claim
Supports C-VEG-09.
11. Independent contrary findings
BfR 2015.
12. Transferability to Germany and Europe
High (German case).
13. Overall methodological judgement
Correct, rarity omitted.
| Multidimensional assessment | |
|---|---|
| Authenticity of the source | verified |
| Methodological quality | low |
| Risk of bias | not assessable |
| Precision of results | not applicable |
| Directness | direct |
| Reproducibility | replicated |
| Consistency with the overall evidence | consistent |
| Regional transferability | high |
| Adequacy of the interpretation (by the archive) | essentially correct but incomplete |
14. Open questions
None.
15. Linked fact checks
Use by the Tayebat archive
Note: according to the archive, the studies were compiled by the archive operators. Whether Dr. Elawady himself cited this study is not established.
- What the archive says about the study
66-year-old with acute cucurbitacin poisoning from bitter zucchini; bitter taste is key.
- A. What was actually studied?
Single case.
- B. What did the authors find?
Self-limiting haemorrhagic colitis.
- C. What conclusions do the authors themselves draw?
Rare; garden units; bitter taste diagnostic.
- D. What does the archive derive from it?
Cucurbits are harmful.
- E. Is this derivation scientifically justified?
Justified for bitter zucchini only; authors stress rarity.
- Adequacy of the interpretation (by the archive)
- essentially correct but incomplete