# With Thinning Bones, Low Muscle Predicts Death Risk More Than Body Fat

*Association of body composition with all-cause mortality among U.S. adults with osteoporosis or osteopenia: a population-based study.*

- **Evidence Level**: Moderate
- **Facts**: Design: Journal Article
- **Publication Types**: Journal Article
- **Journal**: Hormones (Athens, Greece)
- **Sample Size**: 3,918 US adults with osteopenia or osteoporosis
- **Authors**: Wang K, Li X, Wan H, Tian P, Lu C, Zhang X, Ding X
- **Graded and published**: 2026-09-11
- **Last edited**: 2026-09-14
- **Topics**: muscle mass, bone health, mortality
- **DOI**: https://doi.org/10.1007/s42000-026-00825-9
- **Original Source**: https://pubmed.ncbi.nlm.nih.gov/42726194/

## Summary

Among US adults with osteoporosis or weakened bones, having little muscle was linked to about 60% higher risk of dying over roughly 15 years. Carrying extra body fat, on its own, showed no such link. Middle-of-the-road fat levels actually tracked with the lowest risk, while the leanest group fared worst. This challenges the assumption that bone density alone tells you how a person will do.

## Practical Takeaway

This study suggests muscle mass deserves attention alongside bone density in people with osteoporosis.

---

_Canonical: https://longevity-germany.com/en/research/with-thinning-bones-low-muscle-predicts-death-risk-more-than-body-fat · Part of Longevity Cities · Updated 2026-09-14_