Dietary acid load decreases with age and is associated with sagittal abdominal diameter: a nationally representative quantification study in US adults.

"Declarations Conflict of interestThe authors declare that they have no competing interests. This work has not been published before; it is not under consideration for publication anywhere else. This work been approved by all co-authors. Ethical approval and consent to participateThe present study is negligible risk research that involves existing collections of non-identifiable data about human beings. It is a de-identified secondary analysis of freely available data. Research was performed in accordance with the Declaration of Helsinki and approved by the NCHS Research Ethics Review Board (https://www.cdc.gov/nchs/nhanes/irba98.htm). NHANES was approved by the National Centre for Health Statistics research ethics review board and informed consent was obtained for all participants. Consent for publicationNot applicable. Conflict of interest The authors declare that they have no competing interests. This work has not been published before; it is not under consideration for publication anywhere else. This work been approved by all co-authors."

"Funding Open Access funding enabled and organized by Projekt DEAL. The authors received no financial support / funding."