| AA | African ancestry |
| BMI | body mass index, kg/m2 |
| CRC | colorectal cancer |
| CVD | cardiovascular disease |
| EA | European ancestry |
| GMC | gut microbial community |
| FDR | false detection rate |
| FS | flaxseed |
| ER | estrogen receptor |
| OTU | operational taxonomic unit |
| SECO | secoisolariciresinol |
| SDG | secoisolariciresinol diglucoside |
| ED | enterodiol |
| ENL | enterolactone |