Measurement / residue studyindependent cross-checkabstract only checked★ key study I-INTA-05 in-depth review
Is there oxytocin in market milk?
Analysis of oxytocin in milk samples and intake pattern in different age groups of Indian population.
Overview
Mishra M et al.. Toxicology mechanisms and methods 2014 · PMID 24712660 · DOI 10.3109/15376516.2014.910851
In 55 milk samples from an Indian city, oxytocin was found in milkman samples; the authors report indiscriminate injection of cattle.
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?
Oxytocin in market milk
- How was the study done?
Survey with laboratory analysis
- How many people, animals or samples were studied?
55 samples, Lucknow
- What was actually found?
Oxytocin detected, mean 8.9 ng/mL in milkman samples
- How large was the observed effect?
Range 21 pg/mL-18.9 ng/mL
- What do the results mean in everyday life?
The practice exists in some regions
- What are the study's limitations?
One city; no health outcomes
- What does it say about Elawady's specific claim?
Supports that injections are used; not that they cause year-round lactation or harm
- Do the results apply to Germany and Europe?
Low
- What can explicitly not be concluded from this study?
Any health effect in consumers
Scientific in-depth review
1. Full reference
- Authors
- Mishra M et al.
- Journal
- Toxicology mechanisms and methods
- Year
- 2014
- Identifier
- PMID 24712660 DOI 10.3109/15376516.2014.910851
- Verification
- verified – PubMed efetch 2026-10-25
- Retracted
- no
- Corrections
- none
- Extent checked
- abstract only
- Conflicts of interest and funding
Research support (non-US government) per PubMed record
2. Research question
Occurrence of oxytocin in market milk and estimated intake in different age groups
3. Study design and population
- Study design
- Measurement / residue study – Market milk survey with intake estimation (food frequency questionnaire)
- Population
Milk samples from Lucknow, India; consumers of different age groups
- Country
India
- Period
not stated in abstract
- Sample size
55 milk samples (39 milkman, 16 branded)
- Inclusion and exclusion criteria
not stated in abstract
4. Methods and endpoints
- Exposure / intervention
Oxytocin in milk
- Comparator
Milkman vs branded samples
- Endpoints
Oxytocin concentration; estimated daily intake
- Statistical methods
Descriptive
5. Actual results
- Results
Oxytocin in milkman samples 21 pg/mL to 18.9 ng/mL (mean 8.9 ng/mL). Highest estimated intake 2.3-2.4 µg/day/person in the 1-3-year age group.
- Absolute risks
not reported
- Authors' conclusion
Oxytocin injections have been indiscriminately used to milk cattle in dairy industries; with no prescribed limit, regulatory action is needed to avoid non-physiological oxytocin exposure in children.
6. Strengths
- Measures actual market milk
- Two analytical methods (EIA, HPLC)
7. Weaknesses
- Small sample, one city
- No health outcomes
- No estimate of oral bioavailability
- Natural milk oxytocin background not discussed in abstract
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
Exposure survey; representativeness unclear.
9. Assessment of the statistical interpretation
Detection and concentration only; detection does not demonstrate harmful exposure.
10. Relevance to the specific claim
Shows that oxytocin injection of dairy animals is a documented practice in at least one country (India).
11. Independent contrary findings
No health effects measured; oxytocin is a peptide with poor oral stability (see I-INTA-18).
12. Transferability to Germany and Europe
Low; Egypt unknown.
13. Overall methodological judgement
Supports that the practice exists in South Asia; does not show harm to consumers.
| Multidimensional assessment | |
|---|---|
| Authenticity of the source | verified |
| Methodological quality | low |
| Risk of bias | some concerns |
| Precision of results | low |
| Directness | indirect |
| Reproducibility | unknown |
| Consistency with the overall evidence | unknown |
| Regional transferability | low |
| Adequacy of the interpretation (by the archive) | not applicable |
14. Open questions
Prevalence of the practice in Egypt; health relevance of ingested oxytocin.