The Study
How isotopic signatures relate to meat consumption in wild chimpanzees: A critical reference study from Taï National Park, Côte d'Ivoire.
This study looked at chimpanzee hair to see if it could tell us how much meat they ate, like a food diary made of hair. But it turned out the hair didn’t reliably show how much meat each chimp ate — sometimes chimps who ate a lot had low numbers, and those who ate little had high numbers. So the hair can’t be trusted as a meat counter.
Analysis score
Maximum 72 for a cohort study.
Where the score came from
Scientists checked chimp hair to see if it could show how much monkey meat they ate, like a dietary fingerprint.
Where does this study sit?
Systematic Reviews & Meta-analyses
Max 100Randomized Trials
Max 90Cohort Studies
Max 72Case-Control
Max 58Cross-Sectional
Max 44Case Reports & Series
Max 30Expert Opinion
Max 514 / 100
Quality score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
Key takeaways
Summary
Based on the study abstract and findings.
- 1This means you can't use chimp hair to tell who ate more meat—other things like being a mom or living in a different forest area affect the numbers more than meat.
- 2One group ate 26kg of meat per chimp; another ate only 13kg.
- 3But the group that ate less had higher isotope numbers in their hair.
- 4The biggest meat-eaters had average numbers, and the smallest eaters had the highest numbers.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Journal of human evolution
Year
2020
Authors
Vicky M. Oelze, R. Wittig, Sylvain R T Lemoine, H. Kühl, C. Boesch
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.