Answer: Flavonoids relate to better heart function and energy metabolism, according to some studies. But flavonoids also have a unique method of helping grow the dynamic “Mini-Me” that makes up all of your microbiomes. (And yes, microbiomes are everywhere! Ears, lungs, genitals, nose, mouth, armpits, and other places have their own microbiomes. It’s not just your guts, and that’s a very, very good thing!)
Your gut microbiome is mostly programmed by what you eat, all the stuff you’re exposed to, how active you are, any drugs you take, and what state of health you (and your digestion) are in. Flavonoids like quercetin encourage the gut microbiome to grow more “friendly critters” like lactobacilli, bifidobacteria, and Akkermansia that seem to keep immune function and energy metabolism in better trim.