Metabolomic Study of Unintentional Weight Loss in Older Adults
Author Information
Author(s): Yao Shanshan, Marron Megan, Farsijani Samaneh, Shah Ravi, Murthy Venkatesh, Newman Anne
Primary Institution: University of Pittsburgh
Hypothesis
Metabolomics can provide insight into pathways of unintentional weight loss in older adults.
Conclusion
The study found specific metabolite associations with unintentional weight loss that differ from those associated with intentional weight loss and weight gain.
Supporting Evidence
- Unintentional weight loss is linked to higher mortality and impaired mobility in older adults.
- Forty-seven metabolites were significantly associated with unintentional weight loss after adjustments.
- Lower levels of certain amino acids and higher levels of others were linked to unintentional weight loss.
Takeaway
This study looked at older people who lost weight without trying and found certain substances in their blood that might help explain why they lost weight.
Methodology
Plasma metabolites were measured using liquid chromatography-mass spectrometry, and multinomial logistic regression models were used to analyze associations.
Potential Biases
There may be risks of bias related to participant selection and self-reported data.
Limitations
The study may not account for all potential confounding factors despite adjustments.
Participant Demographics
Mean age 74.6 years, 51% women, 37% Black.
Statistical Information
Statistical Significance
FDR < 0.05
Digital Object Identifier (DOI)
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