A fermented extract made from almond mushroom (Agaricus subrufescens) and rye boosted immune function by increasing key immune signals: TNF-α and IL-6—by 3 to 4 times in lab tests. These are proteins your body uses to coordinate immune responses and inflammation. The arabinoxylan-rich extract also fed beneficial gut bacteria, showing promise as a dual-action prebiotic and immune-enhancing supplement.