**5. Conclusions**

In conclusion, malnutrition was found to be a strong predictor of sarcopenia and severe sarcopenia during a four-year follow-up. Our research suggests that both the ESPEN and GLIM criteria might be early indicators to identify those individuals free from the disease that might develop sarcopenia in the upcoming years and to shed light on the physiopathology of sarcopenia throughout the lifespan.

**Author Contributions:** Conceptualization, C.B., O.B., and J.-Y.R.; Methodology, C.B.; Software, M.L.; Validation, D.S.-R., M.L., and C.B.; Formal analysis, M.L.; Investigation, C.B., D.S.-R., and M.L.; Resources, O.B. and J.-Y.R.; Data Curation, C.B., M.L. and L.L.; Writing—Original Draft Preparation, C.B., L.L. and D.S.-R.; Writing—Review & Editing, C.B., D.S.-R., and M.L.; Supervision, O.B.

**Funding:** M.L. is supported by a fellowship from the FNRS (Fonds National de la Recherche Scientifique de Belgium—FRSFNRS—http://www.frs-fnrs.be).

**Acknowledgments:** We would like to thank all participants from the SarcoPhAge study for their collaboration.

**Conflicts of Interest:** The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript; or in the decision to publish the results.
