“All the substances in a man’s diet act upon his body and alter it in some way, and his life depends entirely on these changes.” — Hippocrates
The Legacy of Hippocrates and the Timeless Wisdom of Diet
More than 2,000 years ago, Hippocrates understood that nutrition is much more than an everyday act: it is the cornerstone of our health. Known as the “Father of Medicine,” Hippocrates left a legacy based on disease prevention through healthy lifestyle habits, where diet plays a central role.
His famous saying has not lost its relevance. Today, more than ever, in an era marked by an excess of ultra-processed foods, it is urgent to remember that every substance we ingest interacts with our bodies at profound levels, affecting our physical, mental, and emotional well-being.
How Food Shapes Our Body
Every food we consume triggers a series of chemical reactions in our bodies. Nutrients—vitamins, minerals, amino acids, fats, antioxidants—are absorbed and used to build tissues, produce energy, strengthen the immune system, and maintain vital functions.
These changes are cumulative. A proper diet promotes cell renewal, regulates hormones, and strengthens the mind. Conversely, a poor diet slowly deteriorates organs and systems, opening the door to chronic diseases such as diabetes, hypertension, and depression.
Eating is not just an act of survival: it is an act of daily biological construction.
The Importance of a Varied Diet
Diet variety ensures the intake of all the nutrients necessary for optimal functioning.
No single food contains all the essential elements. Dietary diversity allows us to obtain:
- Complete proteins: essential for building muscles, hormones, and neurotransmitters.
- Essential fatty acids: essential for brain and cardiovascular health.
- Vitamins and minerals: regulators of fundamental metabolic processes.
- Fiber: key to healthy digestion and the prevention of intestinal diseases.
Furthermore, bioavailability—the body’s ability to absorb and utilize nutrients—varies depending on the food and food combination. For example, the vitamin C in an orange improves the absorption of iron in green leafy vegetables.
A rich and varied diet ensures that nutrients are not only present, but are effectively utilized.
Animal-Based Products: Benefits and irreplaceable role
In recent decades, a debate has arisen about the inclusion of animal products in the diet. While moderation is certainly important, animal-based foods provide nutrients that are difficult to obtain exclusively from plant sources, such as:
- Complete protein: with all essential amino acids in optimal proportions necessary for muscle regeneration, hormone production, and immune system function.
- Heme iron: Found in red meats, it is absorbed much more efficiently than plant-based iron.
- Vitamin B12: Only found naturally in animal products, crucial for neurological function and red blood cell formation.
- Long chain Omega-3 fatty acids (EPA and DHA): Present in fatty fish, they have anti-inflammatory properties and are vital for heart, brain and retinal health.
- Zinc and selenium: Minerals abundant in meat and seafood, indispensable for immune defense and antioxidant activity.
Products such as eggs, fish, lean meats, fermented dairy products, and organ meats have been traditional foods in all human cultures, offering not only nutrition but also metabolic resilience.
Scientific studies consistently show that moderate consumption of quality animal products improves physical performance, strengthens bones, supports cognitive function, and reduces the risk of anemia and other nutritional deficiencies, and therefore a better overall health.
Fruits, vegetables and natural products: Pillars of health
We can’t talk about a healthy diet without paying tribute to the plant kingdom. Fruits, vegetables, legumes, nuts, and seeds are invaluable sources of:
- Antioxidants: which combat oxidative stress and cellular aging.
- Phytochemicals: such as polyphenols, with anti-inflammatory and anticancer effects.
- Soluble and insoluble fiber: which regulates intestinal transit, cholesterol, and blood glucose levels.
- Water-soluble vitamins: such as vitamin C and B vitamins, essential for energy production and immunity.
Each color in fruits and vegetables indicates the presence of different bioactive compounds. Including a wide range of colors on your plate ensures comprehensive defense against cellular deterioration and promotes a vigorous immune system.
Dangers of a Poor Diet
The negative effects of a poor diet, based on processed foods, refined sugars, hydrogenated fats, and chemical additives, are profound and devastating.
They are one of the main risk factors for the development of:
- Metabolic diseases: such as type 2 diabetes and metabolic syndrome.
- Cardiovascular disorders: hypertension, arteriosclerosis, heart attack.
- Neurological problems: cognitive impairment, depression, anxiety, Alzheimer’s disease.
- Immune weakening: increasing susceptibility to infections.
The World Health Organization estimates that poor nutrition is one of the leading risk factors for death in the modern world, surpassing even tobacco.
More alarmingly, a diet based on ultra-processed products not only affects the individual, but also future generations through epigenetic alterations.
Moreover, a deficient diet accelerates cellular aging, weakens defenses, increases systemic inflammation, and deteriorates quality of life.
Food can either be our best medicine or our slowest poison, depending on the choices we make every day.
How to build a healthy and balanced diet
Based on the wisdom of Hippocrates, current scientific findings, and using our common sense, a balanced diet should:
- Prioritize natural foods: fruits, vegetables, quality meats, fish, eggs, whole grains, and traditional fermented foods. The less processed, the better. Natural foods maintain their original nutritional matrix, providing not only vitamins and minerals but also fiber, phytochemicals, and enzymes that synergistically promote health.
- Include animal-based foods: in reasonable quantities and from good sources (ideally grass-fed or sustainably fished).
- Limit or eliminate ultra-processed foods: avoid foods with endless lists of artificial ingredients.
- Listen to your body: eat consciously and pay attention to your body’s signals. Reconnect with your true hunger and satiety cues. Avoid eating out of stress, boredom, or anxiety.
- Rotate foods: periodically change your diet to maximize nutrient diversity. Eating a wide variety of foods ensures coverage of all nutrient needs and prevents deficiencies. Monotonous diets, even if they seem healthy, can lead to imbalances.
- Respect biological cycles: prioritize seasonal and local foods. Seasonal products are fresher, more nutritious, and more environmentally sustainable.
- Hydrate properly: prioritize pure water and avoid sugary drinks. Water is the medium where all metabolic reactions occur. Adequate hydration favors digestion, detoxification, and cognitive performance.
A living, authentic diet, based on products from the land and sea, keeps the biological machinery functioning efficiently and for a long time.
The Connection Between Diet, Emotions, and Mental Health
In recent years, science has confirmed what Hippocrates sensed millennia ago: diet directly impacts our mental health.
The gut, where nutrients are processed and absorbed, hosts an ecosystem of bacteria known as the gut microbiota. This “second brain” not only regulates digestion but also the production of neurotransmitters such as serotonin, dopamine, and GABA, essential for emotional well-being.
How Does Diet Influence Emotions?
- A diet rich in fruits, vegetables, natural fermented foods, fatty fish, and lean meats promotes a diverse microbiota, which in turn stimulates the production of substances that enhance mood and emotional resilience.
- Excessive consumption of sugars, trans fats, and ultra-processed products damages the microbiota, promotes systemic inflammation, and is associated with higher rates of anxiety, depression, and mood disorders.
Studies like the SMILES Trial have demonstrated that a healthy diet can be an effective complementary treatment for moderate to severe depression, with effects comparable to some medications but without side effects.
Key Nutrients for the Mind
Certain nutrients particularly stand out for their positive effect on mental health:
- Omega-3 (EPA and DHA): Found in fish like salmon and sardines, they improve brain function and reduce depressive symptoms.
- Magnesium: Found in nuts, spinach, and whole grains, it helps regulate stress.
- B vitamins: Essential for neurotransmitter production.
- Tryptophan: An amino acid found in meat, eggs, and dairy products, necessary for synthesizing serotonin.
The Virtuous Circle
A good diet not only prevents physical diseases but also strengthens our mind, improves mood, increases motivation, and promotes mental clarity. In contrast, a poor diet creates a vicious cycle of inflammation, stress, and psychological deterioration.
Thus, eating well is also a way of cultivating joy, vitality, and inner balance.
Return to the wisdom of nature
Hippocrates understood that food is medicine and that our life depends on the constant biochemical dialogue between what we eat and our bodies.
His legacy invites us to reflect: we are not beings isolated from nature, but deeply dependent on it.
Choosing a varied diet, rich in quality natural products, is not only an intelligent choice but also an act of respect for our body, our mind, and our future.
Our body is a temple, and every choice we make at the table is an act of self-love, respect, and responsibility.
Taking care of our diet is, ultimately, taking care of life itself.