In today’s world, the paradox of malnutrition exists even in societies of abundance, particularly affecting Italians. Many people follow diets that lack essential nutrients necessary for optimal brain function, leading to persistent fatigue, sleep disturbances, concentration difficulties, and mood disorders.
This observation stems from a comprehensive analysis conducted by journalist Eliana Liotta and neuroscientist Michela Matteoli. Their findings are detailed in their upcoming book, La mente radiosa: I cibi e i pensieri che nutrono il cervello e rischiarano la vita. The book, which will be released in the “Scienze per la vita” series, is not a mere compilation of decent habits or a didactic lesson but rather a thoughtful exploration of how the brain operates in daily life.
Imagining the brain as a bustling city filled with billions of neurons, the authors illustrate that these neurons do not physically touch but communicate through synapses, the intersections of this vibrant metropolis. Here, continuous exchanges of information occur through electrical impulses and neurotransmitters, leading to thoughts, emotions, and memories. The more numerous and well-connected these intersections are, the more fluidly thoughts can flow. However, for this city to function effectively, one must abandon the long-held belief in the separation of mind and body.
The Crucial Neurotransmitters
Three key neurotransmitters play pivotal roles in daily balance: serotonin, known as the “molecule of happiness”. dopamine, the fuel for motivation; and melatonin, which regulates the sleep-wake cycle. The brain requires raw materials from food to produce these neurotransmitters.
Nutritional Deficiencies
Despite this, the average Italian diet lacks nine essential nutrients vital for nervous system function, including omega-3 fatty acids, B vitamins, vitamin D, iron, tryptophan, magnesium, potassium, fiber, and iodine. These nutrients are crucial for the functioning of nerve cells and neurotransmitter production.
For instance, potassium, which is abundant in fruits, vegetables, legumes, potatoes, and cocoa, is necessary for sleep mechanisms. Italians typically consume between 2.2 to 2.5 grams of potassium daily, falling short of the 3.5 grams recommended by the World Health Organization.
Serotonin and dopamine, essential for mood and motivation, are synthesized from tryptophan, which may decline with age, and from iron, which is deficient in about 14% of Italian women of childbearing age (WHO Global Health Observatory, 2019). Certain B vitamins are also inadequately represented in the diets of many Italians.
For memory, attention, and learning, omega-3 fatty acids facilitate communication between synapses, while vitamin D is also critical. According to the Omega-3 World Map of 2024, the omega-3 levels in Italians range from 4% to 6%, below the optimal threshold of 8%. Over half of the Italian population is vitamin D deficient, which also affects neurotransmitter release in synapses.
The Role of Fiber and Gut Health
To protect neurons from aging and stress, fiber plays a critical role by nourishing the gut microbiota. A deficiency in substances produced by gut bacteria is linked to depression, anxiety, and neurodegenerative diseases.
Italians consume an average of about 18 grams of fiber daily, significantly below the recommended 25 to 30 grams, with a notable shortfall in fruit (45% less), vegetables (50% less), and legumes (85% less) compared to nutritional guidelines (IV National Food Consumption Survey in Italy, 2023).
While the book outlines a comprehensive list of what is needed for a healthier brain, it also emphasizes the importance of “immaterial” nutrients. These include social interactions, learning, reading, fostering wonder, and cultivating peace. The authors argue that emotions leave traces in the body, akin to echoes reverberating throughout.
Impact of Social Connections
Neuroimaging studies indicate that those who report greater satisfaction with their social lives exhibit increased gray matter density in specific brain areas, reflecting a higher number of synapses. In many ways, we are the sum of every shared meal, each laugh, and every love. We learn through listening, walking, eating, and loving.
As Gianni Rodari poignantly noted, “Notice things to do every day: wash, study, play, set the table at noon. There are things to do at night: close your eyes, sleep, have dreams to dream.” Such reflections underline the essence of maintaining a healthy mind and body.
addressing nutritional deficiencies is crucial for enhancing brain function and overall well-being. As research continues to evolve, understanding the interconnectedness of mind and body will be essential in fostering a healthier society. This inquiry into the brain’s needs encourages us to be proactive about our diets and lifestyles to support our mental health.
This article aims to provide informational content and should not be considered professional medical advice. For personalized guidance, consult a healthcare provider.
