16 Polyphenol Foods to Start Eating

15. Soybeans and Products

Soybeans grow all over the world and are a rich source of plant protein and nutrients. Soy is used in sauces and processed foods and vegetarian dishes, such as tofu and tempeh. Soybeans contain high concentrations of polyphenols, especially isoflavonoids, although predominant compounds vary among cultivars. As with other agricultural products, location and soil quality influence nutrient density. Consumers can't know the exact polyphenol concentrations of soy products, but incorporating soybeans into healthy dishes on a regular basis should provide plenty.