In damp forest undergrowth as well as on neatly arranged market stalls, small brown or white umbrellas patiently wait to be picked, far from the media buzz surrounding exotic berries or miracle seeds from elsewhere. This everyday food, often relegated to a mere accompaniment, nevertheless intrigues researchers studying brain aging. Could a few meals per week really be enough to alter memory and cognitive abilities in seniors? The results of a study conducted in Singapore suggest that the answer could lie in what we eat.
- A Singaporean study shows that more than two portions of cooked mushrooms per week reduce the risk of mild cognitive decline in seniors by about 50%.
- Ergothioneine, an antioxidant that the body cannot manufacture on its own and is particularly abundant in mushrooms such as porcini, protects the brain against oxidative stress and inflammation.
- This molecule withstands cooking well, which makes it easy to incorporate mushrooms, whether fresh or frozen and varied, into daily meals.
- A scientific finding that challenges researchers
- Ergothioneine, the key molecule behind this brain protection
- How to easily incorporate mushrooms into your diet
- A simple ally for preserving your brain with age
A Scientific Finding That Challenges Researchers
It all started with a study conducted by the National University of Singapore, published in the Journal of Alzheimer’s Disease. Between 2011 and 2017, researchers followed 663 people aged 60 and older, observing notably their eating habits and the evolution of their cognitive abilities. A striking result: participants consuming more than two portions of cooked mushrooms per week showed an approximately 50% reduction in the risk of mild cognitive decline, a stage often considered the precursor to Alzheimer’s disease. Even more moderate consumption, one to two portions weekly—about 150 grams of cooked mushrooms—was associated with a 43% reduction in risk, compared with 52% for more than two portions. A Japanese study, conducted within the CIRCS program and published in the British Journal of Nutrition, points in the same direction for women, with the risk of disabling dementia nearly halved beyond 15 grams of mushrooms per day, while no corresponding effect was observed in men. The authors of these works remain cautious: this is a correlation, not formal proof that eating mushrooms alone prevents cognitive decline from occurring.
Ergothioneine, the Key Molecule Behind This Brain Protection
If mushrooms intrigue so much, it is largely thanks to a somewhat technical-sounding molecule: ergothioneine. This antioxidant, which the human body cannot synthesize on its own, is found in particularly high concentrations in certain mushroom species. Research has established a link between low blood levels of ergothioneine and an increased risk of cognitive decline, dementia, and even Parkinson’s disease. Even more striking, among 112 blood metabolites analyzed in aging studies, ergothioneine stood out as the strongest associate with lower mortality and morbidity, especially in cardiovascular terms. Concretely, this molecule acts as a real shield for the brain: it helps limit cerebral inflammation, protects neuronal membranes from oxidative stress, and promotes communication between neurons, a mechanism essential for proper memory functioning. In short, behind its modest appearance, the mushroom hides a true little factory of cellular defense.
How to Easily Incorporate Mushrooms into Your Diet
Good news for French kitchens: mushrooms slip easily into a wide range of dishes, from morning omelets to evening sautés, as well as sauces and soups. Researchers at Penn State University, in a study published in the journal Food Chemistry, compared the ergothioneine content of thirteen different species: porcini mushrooms came out on top by a wide margin, far ahead of the more common white button mushrooms. Other varieties such as shiitake or oyster mushrooms also deserve a regular place in the shopping basket. Another reassuring point highlighted by these studies: ergothioneine withstands heat well, meaning that cooking—whether in a pan, by steaming, or in an oven—does not significantly degrade this protective compound. To fully enjoy these benefits, a few simple habits can make the difference:
- Prefer fresh or frozen mushrooms rather than highly processed versions
- Vary species to gain a broader spectrum of nutrients
- Cook them adequately, without fear of losing their protective properties
- Pair them with an overall anti-inflammatory diet rich in vegetables, fruits, and healthy fats
Moreover, a Swedish study involving 1,865 people over 60 and followed for up to fifteen years showed that an anti-inflammatory diet could reduce dementia risk by 21 to 29%, even among individuals with biomarkers associated with Alzheimer’s disease. Mushrooms thus fit into a broader logic—one of an eating plan designed to take care of the brain in the long term, rather than as a miracle, isolated solution.
A Simple Ally for Preserving Your Brain as You Age
Facing worrying projections, with an estimated 24.7 million new dementia cases worldwide each year by 2050—an increase of more than 116% versus today—every accessible preventive avenue deserves to be taken seriously. The World Health Organization already counted 57 million people living with dementia in 2021, with nearly 10 million new cases each year. In this context, investing in an everyday, inexpensive, and easy-to-prepare food like mushrooms appears as a simple move, far from the discouraging injunctions tied to costly superfoods.
Nothing guarantees that a mushroom sauté will alone keep forgetfulness at bay, but when paired with a globally healthy lifestyle, it could well be one of those small daily gestures that, added together, make a real difference for the aging brain.
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