Muscle disappears quietly. You notice it only when it's almost gone.
En las ciudades y hogares españoles, un proceso silencioso comienza a manifestarse en los cuerpos de personas que apenas han cruzado la mitad de su vida: la pérdida progresiva de músculo conocida como sarcopenia. El nutricionista Pablo Ojeda ha puesto nombre y cifras a lo que considera el principal punto ciego nutricional del país, recordándonos que el envejecimiento no es solo cuestión de años, sino también de lo que ponemos —o dejamos de poner— en el plato. Su advertencia no es alarmista, sino una invitación a actuar mientras el tiempo aún está de nuestro lado.
- La sarcopenia se ha convertido en la enfermedad crónica más prevalente entre los españoles de 45 a 50 años, una cifra que sorprende por lo temprana que resulta.
- El sedentarismo y una dieta pobre en proteínas actúan como aceleradores silenciosos de esta pérdida muscular, a menudo sin que el afectado lo perciba hasta que el daño ya está hecho.
- Ojeda traduce la ciencia en aritmética cotidiana: una persona de 70 kilos necesita unos 70 gramos de proteína al día, el equivalente a dos pechugas y media de pollo.
- La solución no exige alimentos exóticos ni suplementos costosos; legumbres, huevos, pescado en conserva y lácteos ya presentes en la despensa española pueden cubrir la necesidad.
- Los expertos advierten que el objetivo no es la obsesión proteica, sino integrar este nutriente en una dieta equilibrada antes de que la ventana de prevención se cierre.
Pablo Ojeda, nutricionista sevillano habitual en televisión y radio, ha lanzado una advertencia sobre lo que considera el principal problema nutricional oculto en España: la falta de proteína en la dieta de los adultos. Durante una intervención en Las mañanas de Kiss FM, señaló que la sarcopenia —la pérdida progresiva de masa y fuerza muscular asociada al envejecimiento— se ha convertido en la enfermedad crónica más común entre los españoles de 45 a 50 años, agravada por el sedentarismo y una alimentación insuficiente en proteínas.
Ojeda concretó las necesidades diarias con una fórmula sencilla: entre 1 y 1,2 gramos de proteína por kilogramo de peso corporal. Para una persona de 70 kilos, eso supone unos 70 gramos al día, equivalentes aproximadamente a dos pechugas y media de pollo. Los presentadores del programa, algo desconcertados por la magnitud de la cifra, pidieron ejemplos visuales, y el nutricionista los proporcionó con datos precisos sobre los alimentos más ricos en proteína: atún en conserva, pechuga de pollo, lomo de cerdo, queso parmesano e incluso lentejas, que con 26 gramos por cada 100 rivaliza con la carne.
Ojeda, especialista en obesidad y trastornos de la conducta alimentaria con máster en coaching nutricional y psiconeuroinmunología, no aboga por la obsesión proteica. Tanto él como las instituciones académicas que respaldan esta investigación insisten en que la clave es una dieta equilibrada donde la proteína ocupe el lugar que le corresponde. Para quienes rondan los cuarenta o cincuenta años, la posibilidad de frenar el avance de la sarcopenia sigue abierta, pero requiere atención sostenida a lo que se come y a cómo se mueve el cuerpo.
Pablo Ojeda, a nutritionist from Seville who regularly appears on Spanish television and radio programs, has begun sounding an alarm about a condition most people don't think about until it's too late. During a recent segment on the radio show Las mañanas de Kiss FM, he identified what he sees as a critical nutritional blind spot in Spain: we're not eating enough protein, and the consequences are showing up in the bodies of people barely into middle age.
The problem has a name: sarcopenia. It's the progressive loss of muscle mass and strength that comes with aging—a natural process, yes, but one that can be dramatically accelerated by the way we live and eat. Ojeda pointed out that sarcopenia has become the leading chronic disease among Spanish adults between 45 and 50 years old. The culprit, he argues, is straightforward. Most people consume far too little protein, the fundamental building block of muscle tissue.
When the radio hosts pressed him for specifics, Ojeda laid out the math with clarity. A sedentary person needs roughly 1 to 1.2 grams of protein per kilogram of body weight each day. For someone weighing 70 kilograms—a typical adult—that translates to about 70 grams of protein daily. To put that in concrete terms, a chicken breast contains roughly 31 grams of protein per 100 grams of meat. So a 70-kilogram person would need to eat two and a half chicken breasts a day just to meet the baseline requirement. The hosts, slightly bewildered by the calculation, asked for clarification in terms they could visualize, and Ojeda obliged with the numbers.
The good news is that protein is not scarce or exotic. It lives in foods most people already eat. Animal sources—chicken, beef, pork, fish, eggs, milk, cheese—deliver protein efficiently. Plant-based options work too: legumes, nuts, and whole grains all contribute. The Clínica Universidad de Navarra has compiled a list of the most protein-dense foods. Canned tuna offers 32 grams per 100 grams of product. Chicken breast provides 31 grams. Pork loin delivers 30 grams. Parmesan cheese contains 28 grams. Even lentils, at 26 grams per 100 grams, rival meat in protein density.
Ojeda himself is well-positioned to make this argument. He holds a master's degree in nutritional coaching and psychoneuroimmunology, and he specializes in obesity and eating disorders. He's a member of the Spanish Society for the Study of Obesity. Beyond his regular appearances on the television program Más Vale Tarde, he's written a book with Virginia Troconis called Comida, vamos a llevarnos bien—roughly, Food, Let's Get Along—which explores how to enjoy eating while maintaining a healthy diet. His credentials and his media presence give his warnings weight.
But Ojeda is careful not to oversimplify. The academic institutions backing this research emphasize that the goal is not obsession with protein consumption, but rather a balanced diet where protein plays its proper role. Sarcopenia is preventable, or at least its progression can be slowed, but only through sustained attention to how we eat and move. For people in their forties and fifties, the window to act is still open—but it won't stay that way forever.
Citas Notables
We consume too little protein, which is the foundation of muscle building— Pablo Ojeda, nutritionist
A balanced diet is essential—there's no need to become obsessed with protein consumption— Clínica Universidad de Navarra
La Conversación del Hearth Otra perspectiva de la historia
Why does sarcopenia matter now, specifically? It's been happening to aging bodies for centuries.
Because we're sedentary in ways our ancestors weren't. We sit at desks, in cars, on couches. Muscle loss was always part of aging, but now it's accelerated by lifestyle. And we're seeing it show up earlier, in people who should still feel strong.
So it's not just about getting old—it's about how we're living while we age.
Exactly. A 50-year-old today might have the muscle mass of a 70-year-old from a generation ago. The protein part is fixable. The sedentary part is the real problem we're not addressing.
Two and a half chicken breasts a day sounds like a lot to most people.
It does, but it's not. You're spreading it across three meals. A breast at lunch, another at dinner, half one at breakfast or in a snack. Once you know the number, it becomes routine. The hard part is knowing you need to do it.
What happens if someone ignores this warning?
Muscle disappears quietly. You notice you can't carry groceries the way you used to. Stairs become harder. Falls become more likely. By 70, you might not be able to live independently. It's preventable, but only if you start now.