Metabolomics and Nutrition
Here is a link to an excellent review article that provides a very solid basis for this section of the wikibook. This is a free full-text article from the American Journal of Clinical Nutrition.
Metabolomics in human nutrition: opportunities and challenges Michael J Gibney, Marianne Walsh, Lorraine Brennan, Helen M Roche, Bruce German and Ben van Ommen American Journal of Clinical Nutrition, Vol. 82, pp. 497-503, September 2005