Macro partitioning
Specific fiber-degrading bacteria (Akkermansia, Dialister, Oscillospira, Ruminococcaceae, Clostridiales) decrease in abundance with increasing BMI in Colombian and American populations.
If you are trying to improve your gut health through diet, focus on fiber intake. This study suggests that higher BMI is associated with lower levels of key fiber-degrading bacteria. Restoring these bacteria may require dietary changes that support their growth, rather than just probiotic supplements.
five fiber-degrading bacteria, including Akkermansia, Dialister, Oscillospira, Ruminococcaceae and Clostridiales, became less abundant in obese subjects.
Why this rating
Based on the Colombian dataset (n=30) and USA dataset subsets; correlation does not imply causation, but the trend is consistent.
Source
The gut microbiota of Colombians differs from that of Americans, Europeans and Asians
Juan S. Escobar et al. · BMC Microbiology · 2014
DOI 10.1186/s12866-014-0311-6
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