Edible and medicinal mushrooms flip on the body’s main immune control panels including TLR, Dectin-1, MAPK, and NF-κB, which tell immune cells when to attack and when to calm down. Their β-glucans and immune-active proteins increased key defense signals and boosted pathogen-clearing activity up to 2.3-fold, helping white blood cells respond faster and more effectively. In real-world terms, this means better frontline protection against infections, stronger vaccine and antiviral responses, and smarter inflammation control so the immune system stays active without tipping into chronic overdrive.