How to unlock the secret power of the mushrooms to heal your gut, cut cholesterol and protect your brain | Prof Robin May

Host Jonathan Wolf welcomes Professor Robin May, a microbiologist and scientific advisor to the UK government, to discuss the health benefits and myths surrounding mushrooms. They explore the surprising evolutionary fact that fungi are more closely related to animals than to plants.

Prof Robin May explains the key differences between plants and fungi, noting that fungal cell walls are made of chitin rather than cellulose. He also clarifies the distinction between the broad fungal kingdom and mushrooms, which are merely the fruiting bodies of larger underground networks called mycelia.

Professor Robin May explains how individual underground fungal networks can grow to massive sizes, stretching for miles. He and Jonathan Wolf also discuss how cultural palates in Western countries are expanding to include a wider variety of mushrooms, driven by globalization, travel, and a growing appreciation for diverse flavors like umami.

Professor Robin May discusses the nutritional benefits of mushrooms, highlighting their high fiber and protein content alongside low levels of saturated fat. He explains how fungi harvest rare trace elements like potassium and selenium from the soil and notes their unique ability to produce essential vitamins, particularly vitamin D.

Robin May explains how mushrooms serve as an excellent dietary source of vitamin D, especially for people living in northern climates like the UK and northern US during winter. He notes that the amount of vitamin D varies significantly by species, with oyster mushrooms containing far more than standard field mushrooms.

Prof Robin May explains how mushrooms, particularly oyster mushrooms, produce vitamin D when exposed to UV light. He describes how a molecule called ergosterol in the mushroom's membrane spontaneously converts into vitamin D, a process that can even be replicated at home by placing mushrooms in the sun.

Jonathan Wolf and Robin May discuss how exposing mushrooms to sunlight for just one to two hours can significantly boost their vitamin D levels. They explain that consuming a small amount of these sun-exposed mushrooms can easily meet one's daily recommended intake of the vitamin.

Prof Robin May discusses the varying levels of vitamin D found in different types of mushrooms. He highlights the exotic bolete mushroom as having exceptionally high amounts and suggests exposing mushrooms to sunlight before cooking to boost their nutritional value.

Jonathan Wolf and Prof Robin May discuss how mushrooms produce vitamin D when exposed to UV light, even in colder climates like Boston during winter. They also introduce ergothioneine, a potent antioxidant amino acid produced by fungi that some scientists argue should be classified as a vitamin due to its ability to mitigate cellular damage and aging.

Professor Robin May discusses ergothioneine, a compound found in mushrooms that may help reduce cellular hallmarks of aging. He highlights the mystery of why humans have a highly conserved protein specifically for absorbing it, despite its function remaining largely unknown.

Professor Robin May and Jonathan Wolf discuss ergothioneine, a unique compound found in mushrooms and cyanobacteria. While it is associated with potential neuroprotective benefits, its exact function remains a scientific mystery, and certain genetic receptors for it are linked to Crohn's disease.

Jonathan Wolf and Prof Robin May discuss the nutritional value of mushrooms, including vitamins and minerals like potassium and selenium. They also explore whether scientific evidence supports the traditional health claims of mushrooms in countries like China and Japan.

Prof Robin May discusses the challenges of studying the health benefits of mushrooms, noting that Western diets have historically included very few species. He highlights the chemical diversity of fungi, referencing penicillin and the potential of lion's mane to stimulate nerve growth and protect the brain.

Professor Robin May discusses the conflicting and limited scientific studies regarding the effects of certain mushrooms on cognitive decline and mental performance. While some small studies suggest potential improvements in mental scores, others indicate a potential drop in word recall, highlighting the need for more robust research.

Prof Robin May discusses the complex relationship between fungi and the human immune system, highlighting both potential benefits and risks. He explains how molecules like beta-glucan can stimulate immune responses, while warning individuals with compromised immune systems to avoid risky fungal exposures.

Prof. Robin May explains how the carbohydrates and sugars in mushrooms serve as vital food for gut bacteria, stimulating a healthy microbiome. He also discusses the emerging understanding of the gut's natural fungal microbiome and highlights Malassezia, a unique fungus that lives on the human scalp.

Professor Robin May discusses a unique fungus that can only grow and reproduce on the human head by utilizing the oils produced there. This highlights the complex ecosystem of microbes and fungi that coexist with humans, raising questions about whether some of these organisms are actually beneficial to our health.

Prof. Robin May explains how certain fungi like Candida live symbiotically in the human body to help regulate the immune system. He also discusses how beta-glucan, a molecule found in mushroom cell walls, helps lower bad cholesterol by absorbing it in the gut.

Jonathan Wolf and Robin May discuss the best cooking methods for mushrooms to preserve their nutritional value. May explains that while quick frying retains vitamins, boiling can cause water-soluble nutrients like vitamins B, C, and potassium to leach out if the cooking liquid is discarded.

Professor Robin May discusses the preparation of mushrooms, advising caution when consuming them raw due to potential pathogens and difficult cleaning. He also highlights the presence of hydrazine, a compound in some fungi that has been shown to damage DNA in laboratory settings.

Robin May and Jonathan Wolf discuss the best ways to prepare and cook mushrooms to maximize taste and overcome childhood dislikes. They highlight the diversity of the mushroom kingdom and offer advice on handling potent varieties like truffles.

Professor Robin May and Jonathan Wolf discuss practical ways to add more mushrooms to your daily meals, even for those who are hesitant. They suggest starting with finely chopped mushrooms in sauces or trying mixed supermarket boxes containing exotic varieties like oyster mushrooms.

Jonathan Wolf and Robin May discuss the benefits of incorporating a diverse range of mushrooms into one's diet to support the microbiome. Robin also shares his personal favorite ways to prepare and eat mushrooms.

Prof. Robin May shares tips on incorporating mushrooms into everyday meals, advising against foraging wild mushrooms. Host Jonathan Wolf summarizes the health benefits of mushrooms, highlighting their role in supporting the microbiome and providing unique nutrients like vitamin D and ergothioneine.

Jonathan Wolf summarizes the key health benefits of mushrooms, noting their rich content of vitamins and beta-glucans. He explains that having low levels of fungi in the gut is natural and beneficial, and shares his plan to incorporate mushrooms into his weekly diet.