Temporal Stability of the Fecal Microbiome in Older Adults

This study explores how stable the gut microbiome is over a two-year period in a group of healthy older adults. Researchers analyzed stool samples collected every six months using advanced sequencing techniques. The findings reveal that while most gut bacteria remained consistent over time, rarer microbial species and functions showed more variability. These insights highlight the importance of reliable measurement in microbiome studies related to cancer and suggest the need for sampling strategies to minimize bias in cancer risk estimation.