Leave the table still a little hungry—that's the secret.
A los 97 años, el oncólogo italiano Silvio Garattini sigue caminando cinco kilómetros diarios a paso vivo, y en esa rutina sencilla reside una lección que la ciencia respalda: el cuerpo humano responde al movimiento y a la moderación a cualquier edad. Garattini no habla desde la teoría, sino desde décadas de investigación farmacológica y desde su propia vida, que se ha convertido en argumento viviente a favor de hábitos que, adoptados colectivamente, podrían aliviar el sufrimiento de millones. Su mensaje no es una promesa de inmortalidad, sino un recordatorio de que muchas enfermedades no son inevitables, sino el resultado acumulado de elecciones cotidianas.
- A los 97 años, Garattini camina a un ritmo que le deja sin aliento, porque sabe que sin fatiga real no hay beneficio aeróbico.
- La urgencia de su mensaje se mide en cifras concretas: 4,5 millones de diabéticos en Italia y 180.000 muertes anuales por cáncer, muchas de ellas evitables.
- La ciencia que cita es contundente: reducir la ingesta calórica un 30% se asocia con vivir un 20% más, independientemente de si se come en tres comidas o en cinco.
- Frente al ruido de dietas de moda y rutinas complejas, Garattini propone algo radicalmente simple: caminar con intensidad entre 150 y 300 minutos por semana y levantarse de la mesa con un poco de hambre.
- Su convicción más poderosa es que nunca es tarde para empezar, y que cuidarse no es solo un acto individual sino una forma de aligerar la carga sobre las familias y los sistemas sanitarios.
Silvio Garattini tiene 97 años y cada día camina cinco kilómetros. No como paseo, sino como ejercicio deliberado: a un ritmo que acelera el corazón y obliga a los pulmones a trabajar. El oncólogo y farmacólogo italiano, director del Instituto Mario Negri, insiste en que una caminata tranquila frente a los escaparates no cuenta. Tiene que haber fatiga. Recomienda entre 150 y 300 minutos semanales de este tipo de movimiento aeróbico; más allá de ese umbral, los beneficios se estabilizan.
La otra mitad de su fórmula está en la mesa. Garattini come de todo, pero poco. La variedad le garantiza el espectro completo de nutrientes y, en un mundo con alimentos cada vez más contaminados, evita que cualquier sustancia nociva se acumule en exceso. Pero la variedad sin moderación no basta. Cita un principio antiguo: levantarse de la mesa con un poco de hambre. Los estudios que respaldan esta idea son llamativos: reducir la ingesta en un 30% se asocia con una vida un 20% más larga. El horario de las comidas, en cambio, importa mucho menos de lo que se cree; lo que determina el resultado es la cantidad total consumida al día.
Garattini es enfático en un punto: nunca es demasiado tarde para cambiar. Incluso a los 80 años, empezar a caminar es siempre mejor que quedarse quieto. Y las consecuencias de no hacerlo no son abstractas. En Italia hay 4,5 millones de diabéticos con complicaciones evitables, y el 40% de los cánceres podría prevenirse. Para él, su rutina diaria no es disciplina personal sino una forma de responsabilidad: hacia su familia, hacia el sistema sanitario, hacia quienes lo rodean.
Silvio Garattini is 97 years old and still walking five kilometers a day. The Italian oncologist and pharmacologist, who has spent his career directing the Mario Negri Institute for Pharmacological Research, treats his daily stride not as a casual stroll but as a deliberate act of maintenance. He walks at what he calls a "relatively brisk" pace—the kind that leaves you slightly breathless, that quickens your heartbeat. "When I finish, I feel much better," he said in a recent interview. "And above all, it helps me think."
But Garattini is careful to distinguish between movement and exercise. A leisurely walk to look at shop windows, he insists, is not physical activity. There has to be fatigue involved—real fatigue, the kind where your lungs work harder and your heart beats faster. This matters because the aerobic effect is what counts. He recommends between 150 and 300 minutes of this kind of walking per week. Beyond that, he notes, the benefits plateau.
The walking is only half the equation. Garattini's other pillar is how he eats. His diet is varied—he eats a little of everything—which serves two purposes. First, it ensures he gets the full spectrum of micro and macronutrients his body needs. Second, in a world where food is increasingly contaminated, eating a wide range of foods prevents any single pollutant from accumulating in dangerous amounts. But variety alone is not enough. It must be paired with restraint.
He invokes an old saying: you should leave the table still a little hungry. The research backing this is striking. Studies have shown that reducing food intake by 30 percent correlates with living 20 percent longer. Eating less, in other words, is a longevity factor. The timing of meals matters far less than people think. Garattini points to research on fasting that found no meaningful difference between people who ate freely and those who left 10 to 12 hours between meals. What matters is the total amount consumed, whether that happens in three meals or five.
He is emphatic that it is never too late to start. Even at 80, someone can begin walking. "It is always better than staying still," he says. The habits compound over time, and their benefits extend far beyond the individual. When people are healthy, their families suffer less. The healthcare system, already strained, faces less burden. Preventable diseases become fewer.
In Italy, where Garattini lives, the numbers are sobering. There are 4.5 million diabetics, many of whom develop vision problems, cardiovascular disease, and kidney damage—complications that could be avoided through different choices. Forty percent of cancers are preventable, yet 180,000 people die from cancer in Italy each year. These are not abstract statistics to Garattini. They are the cost of habits that could be changed. He sees his own routine—the daily walk, the modest plate—not as a personal discipline but as an act of generosity toward the people around him and the systems that sustain them.
Citas Notables
When I finish walking, I feel much better. And above all, it helps me think.— Silvio Garattini
Eating little is a longevity factor. What matters is the total amount consumed, whether in three meals or five.— Silvio Garattini
La Conversación del Hearth Otra perspectiva de la historia
You've spent nearly a century on this planet. When did you realize that how you moved and ate actually mattered for how long you'd live?
I think the evidence was always there, but I had to see it accumulate. As a pharmacologist, I was trained to look at data. The research on calorie restriction kept pointing the same direction. But it wasn't abstract—I could feel it in my own body, year after year.
Five kilometers a day is a lot. Do you ever miss a day?
I try not to. The point isn't perfection. It's consistency. When I walk, my mind clears. I solve problems while I'm moving. That's not separate from longevity—that's part of it.
You're very specific about the pace. Why does it matter if someone walks slowly versus quickly?
Because slow walking is just movement. Your heart doesn't work harder. Your lungs don't work harder. There's no aerobic stimulus. You need that stress on the system to trigger the adaptations that keep you young.
The 30 percent less food, 20 percent longer life—that's a striking ratio. Do you actually live that way?
Yes. And it's not deprivation. You eat everything, just less of it. The variety prevents boredom and ensures you're not missing nutrients. You leave the table satisfied but not stuffed.
What do you say to someone who hears this and thinks it sounds like a hard life?
It's not hard. It's the opposite. Hard is being diabetic at 60. Hard is losing your vision. Hard is depending on medications for conditions you could have prevented. What I'm describing is freedom—the freedom to move, to think clearly, to not be a burden on your family or your country's healthcare system.
At 97, do you ever wonder if you've done enough, or do you keep walking?
I keep walking. There's always more to learn, more to understand. And as long as I can move, I will.