What is a fungus biologically?

More of us are turning to products containing mushroom extracts, with the medicinal fungi market worth billions of pounds. Promises of mental and physical health benefits have seen its popularity spill over from wellness influencers to the shelves of Marks & Spencer – but is there any scientific evidence behind these claims? In this episode from June, Ian Sample chats to Madeleine Finlay about the appeal of mushroom drinks and supplements, and hears from the mycologist Prof Nik Money on what we really know about how fungi can affect our minds and bodies. Help support our independent journalism at theguardian.com/sciencepod