The agarikon is one of the largest, oldest-living mushrooms in the world, and at least one scientist believes it holds the key for a cure to tuberculosis – along with many other illnesses. Paul Stamets, founder of Fungi Perfecti and an advisor at the Program of Integrative Medicine at the University of Arizona Medical School has been hunting for the elusive and endangered agarikon in the old growth forests of the Pacific Northwest – one of only a few places in the world along with Europe where these massive fungi grow. Why, you ask? Both in ancient spiritual traditions and modern medicine, agarikon are believed to be one of the most potent medicines known to humanity. Indigenous peoples in both North America and Europe used agarikon to treat a host of illnesses and infectious diseases – ranging from coughs to asthma, and arthritis to infections. Even the ancient Greeks knew of agarikon and called it an “elixir for long life” because it was used to treat tuberculosis.