Effect of a controlled dietary change on carbon and nitrogen stable isotope ratios of human hair
- 14 July 2009
- journal article
- research article
- Published by Wiley in Rapid Communications in Mass Spectrometry
- Vol. 23 (16), 2448-2454
- https://doi.org/10.1002/rcm.4039
Abstract
The carbon (13C/12C) and nitrogen (15N/14N) stable isotope ratios of human hair can be used for the interpretation of dietary habits and nutritional status in contemporary or past populations. Although the results of bulk or segmental isotope ratio analysis of human hair have been used for the reconstruction of an individual's diet for years, only limited data of controlled dietary changes on the carbon and nitrogen isotopic composition of human hair are available. Hair of four individuals, two males and two females, who participated in a dietary change experiment for 28 days was segmentally analysed for δ13C and δ15N. The dietary change included a change from C3 to C4 plant enriched diets and a simultaneous replacement of terrestrial animal products by marine products. This resulted in an increase in δ13Cdiet of +8.5 to +9.9‰ and in δ15Ndiet of +1.5 to +2.2‰. All subjects showed significant increases in δ13Chair and δ15Nhair during the dietary change period, although no subject reached a new steady state for either carbon or nitrogen. The change in δ15Nhair was faster than the change in δ13Chair for all individuals. The magnitude of change of the isotopic composition during the dietary change period could be attributed to the degree of physical activity of the individuals, with a higher physical activity resulting in a faster change. Copyright © 2009 John Wiley & Sons, Ltd.Keywords
This publication has 32 references indexed in Scilit:
- Carbon isotope analysis of bulk keratin and single amino acids from British and North American hairRapid Communications in Mass Spectrometry, 2005
- Nitrogen balance and δ15N: why you're not what you eat during nutritional stressRapid Communications in Mass Spectrometry, 2005
- Choice of dietary protein of vegetarians and omnivores is reflected in their hair protein 13C and 15N abundanceRapid Communications in Mass Spectrometry, 2005
- Nitrogen balance and δ15N: why you're not what you eat during pregnancyRapid Communications in Mass Spectrometry, 2004
- Stable isotope (13C, 15N and 34S) analysis of the hair of modern humans and their domestic animalsRapid Communications in Mass Spectrometry, 2002
- Investigations into the effect of diet on modern human hair isotopic valuesAmerican Journal of Physical Anthropology, 1999
- Stable carbon and nitrogen isotopic composition of diet and hair of Gidra-speaking PapuansAmerican Journal of Physical Anthropology, 1996
- Reconstruction of human diet from σ13C and σ15N in contemporary Japanese hair: a stochastic method for estimating multi-source contribution by double isotopic tracersApplied Geochemistry, 1992
- Stable isotopes of carbon, nitrogen and hydrogen in the contemporary north American human food webEcology of Food and Nutrition, 1986
- Geographical variations in the carbon isotope composition of the diet and hair in contemporary manJournal of Mass Spectrometry, 1982