The carbon isotope ratio of breath is elevated by short-term and long-term added sugar and animal protein intake in a controlled feeding study.
Diane M O'BrienLaurence S FreedmanPatricia RiveraSean MerrimanVirág Sági-KissSusana A Palma-DuranBrian BarrettJohn ComminsVictor KipnisNatasha TasevskaPublished in: The American journal of clinical nutrition (2024)
The breath CIR is a promising measure of long-term intakes of AS and AP, especially as proportional intakes. Approaches to increase specificity would benefit the further development of this biomarker.