Shelf-shaped bracket fungus growing in fan-like clusters on logs. Not eaten whole (too tough) — made into tea or taken as extract. Contains PSK (polysaccharide K / krestin) and PSP (polysaccharide peptide) — two of the most clinically studied natural immunomodulatory compounds. PSK is an approved cancer adjuvant drug in Japan for gastric, colorectal, and lung cancer (sold as Krestin).
Turkey tail grows freely on fallen logs in forests across the Eastern US — can be foraged and dried by those who learn identification (very safe — no toxic look-alikes in North America). Available as extract powder and capsules at health food stores. Host Defense Stamets 7 blend widely available.
PSK (polysaccharide K) from turkey tail is a registered pharmaceutical in Japan — prescribed as an adjuvant treatment alongside chemotherapy for gastric, colorectal, and lung cancer. Multiple RCTs demonstrate PSK significantly extends 5-year survival rates in gastric cancer (by 15-20%) and colorectal cancer (12-17%) when combined with standard chemotherapy versus chemotherapy alone. Given the higher cancer mortality rates in Black Americans, turkey tail as a daily immune and cancer-preventive supplement addresses the highest-mortality disease gap directly. A 2014 University of Bastyr study (FDA-approved IND) found turkey tail PSP supplementation in breast cancer patients improved immune cell populations (Natural Killer cells, CD8+ T cells) significantly — demonstrating immune restoration during conventional cancer treatment. For gut health: turkey tail's beta-glucan acts as a powerful prebiotic, significantly increasing Bifidobacterium, Lactobacillus, and Akkermansia muciniphila (a keystone gut bacterium associated with metabolic health and longevity).
Tea: simmer 10-15g dried turkey tail in 4 cups water 45-60 min, strain. Drink 1-2 cups daily. Extract powder: 1-2 tsp in coffee or tea. Combined mushroom blends (with lion's mane, reishi, chaga) are available from Host Defense (Paul Stamets), Four Sigmatic, and others. Not eaten whole — primarily as a tea or extract.
Free, no account needed to ask.