# A New Blood Test Uses 8 Amino Acids to Estimate Your Biological Age

*Amino acid-based biological age clock and its implications for human health and aging.*

- **Evidence Level**: Moderate
- **Publication Types**: Journal Article
- **Journal**: Nature communications
- **Sample Size**: Over 280,000 people aged 1 to 89
- **Authors**: Ding K, Xu R, Chao X, Li M, Sun T, Yang T, Zhu M, Peng X, Liu R, Luo P, Tian G, Lin Y, Xie G, Zheng X, Zhang L, Jia W, Chen T
- **Published**: 2026-05-22
- **Topics**: biological age, biomarkers, aging clocks
- **DOI**: https://doi.org/10.1038/s41467-026-73371-y
- **Original Source**: https://pubmed.ncbi.nlm.nih.gov/42173921/

## Summary

Scientists built a tool called AmiAge that estimates how old your body really is by measuring 18 amino acids in your blood. They then simplified it down to just 8 amino acids. People whose AmiAge was higher than their actual age tended to be frailer, had shorter telomeres, and got age-related diseases more often.

## Practical Takeaway

This study suggests amino acid levels may become a simple way to track biological aging in routine bloodwork.

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_Canonical: https://longevity-germany.com/en/research/a-new-blood-test-uses-8-amino-acids-to-estimate-your-biological-age · Part of Longevity Cities · Updated 2026-05-22_