Guideline / position statementindependent cross-checkabstract only checked I-CAN-06 standard review
Cancer wasting is caused by the cancer itself
Definition and classification of cancer cachexia: an international consensus.
Overview
Fearon K et al.. Lancet Oncol 2011 · PMID 21296615 · DOI 10.1016/S1470-2045(10)70218-7
Experts define cachexia as muscle loss driven by the tumour's effects on metabolism and appetite, not fully reversible by food.
Does the study support the specific claim? No · Methodological quality: moderate
Plain-language summary
Study explained simply
- What did the researchers want to find out?
Define cachexia.
- How was the study done?
Delphi consensus.
- How many people, animals or samples were studied?
Experts.
- What was actually found?
Definition.
- What do the results mean in everyday life?
Weight loss in cancer needs medical attention.
- What are the study's limitations?
Consensus.
- What does it say about Elawady's specific claim?
Contradicts 'not dying of cancer'.
- Do the results apply to Germany and Europe?
High.
Scientific in-depth review
1. Full reference
- Authors
- Fearon K et al.
- Journal
- Lancet Oncol
- Year
- 2011
- Identifier
- PMID 21296615 DOI 10.1016/S1470-2045(10)70218-7
- Verification
- verified – PubMed esummary + efetch 2026-10-25
- Retracted
- no
- Corrections
- none
- Extent checked
- abstract only
- Conflicts of interest and funding
not stated in abstract
2. Research question
Definition of cancer cachexia.
3. Study design and population
- Study design
- Guideline / position statement – Formal expert consensus (Delphi)
- Population
Cancer patients
- Country
International
- Sample size
Expert panel
4. Methods and endpoints
- Endpoints
Definition/criteria
- Statistical methods
Delphi
5. Actual results
- Results
Cancer cachexia defined as a multifactorial syndrome of ongoing skeletal-muscle loss not fully reversible by conventional nutrition, driven by reduced food intake and abnormal metabolism; criterion weight loss >5% (or >2% with BMI <20 or sarcopenia).
- Absolute risks
not applicable
- Authors' conclusion
Consensus framework for definition and classification.
6. Strengths
- Formal consensus
7. Weaknesses
- Expert opinion
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
Consensus.
9. Assessment of the statistical interpretation
10. Relevance to the specific claim
Wasting in cancer is a cancer-driven syndrome, not an alternative to 'dying of cancer'.
11. Independent contrary findings
12. Transferability to Germany and Europe
High.
13. Overall methodological judgement
Context.
| Multidimensional assessment | |
|---|---|
| Authenticity of the source | verified |
| Methodological quality | moderate |
| 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) | not applicable |
14. Open questions
15. Linked fact checks
- Cancer patients do not die of cancer itself but of wasting and cortisone (hormonal disturbance). – Studies contradicting or limiting the claim
- The body heals itself if left alone: the human body was created healthy and has an unlimited capacity for self-healing unless burdened by harmful inputs. – Studies contradicting or limiting the claim
- In his practice he treats cancer with fasting (fasting every other day) and by reducing solid foods; he himself can go for days without food, on sugar-cane juice only. – Studies contradicting or limiting the claim