
¿Qué es la sarcopenia?
Revisado por pares por Dr Krishna Vakharia, MRCGPAuthored by Victoria RawPublicado originalmente 7 Feb 2025
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Es inevitable que cuando envejecemos, nuestros cuerpos comiencen a cambiar. Una de las áreas en las que podríamos notar una diferencia es en nuestra fuerza muscular. Esta disminución, conocida como sarcopenia, es una parte normal del proceso de envejecimiento. Aunque no recomendamos subirse al ring con Anthony Joshua en el corto plazo, entender la sarcopenia puede ayudarte a tomar medidas proactivas para manejarla a medida que envejeces.
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¿Qué es la sarcopenia?
Sarcopenia is a health condition where your muscles lose mass and become weaker as you age. Over time, it’s natural for their strength and function to decline as part of the body’s lifecycle - a process that affects everyone.
Thomas Olsen, Director and Physiotherapist, EmbdyHealth, Greater Sydney, Australia says: "Sarcopenia is a condition which results in a progressive loss of muscle mass and strength due to a reduction in the sarcomere size and strength."
Sarcomeres are the basic parts of your muscle fibres that make them contract.
John Gallucci Jr, CEO of JAG Physical Therapy, New Jersey, USA says that sarcopenia is one of the most common causes of functional decline and loss of independence in ageing adults.
Trista Best, Registered Dietitian, The Candida Diet, Georgia, USA adds that this condition comes with an increased chance of falls, frailty, and other quality of life concerns.
What are the four symptoms of sarcopenia?
Volver al contenidoThe main symptom of sarcopenia is a decrease in muscle size, which often leads to other symptoms resulting from this change.
Olsen and Gallucci identify four key symptoms:
Debilidad muscular - the most common.
Decreased stamina - less able to complete prolonged activities.
Poor balance - lack of strength can cause an increase in falls.
Loss of overall mobility - may speed up sarcopenia.
Gallucci says: "The symptoms of sarcopenia may vary depending on how much muscle mass a person has lost."
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What causes sarcopenia?
Volver al contenidoYour muscles are generally in peak physical condition around the age of 30-35. After this, they gradually start to lose their mass as you reach your forties.
"This decline is slow at first," says Olsen. "Then increases from age 65 for women and 70 for men."
He explains that - other than ageing - there are a few things that can affect how quickly they decline.
Estas incluyen:
Physical inactivity.
Reduced testosterone levels.
According to Gallucci, additional factors may also lead to sarcopenia, such as:
Environmental causes - such as smoking, alcohol intake, medicines and exposure to toxins.
Health conditions - such as diabetes y enfermedades del corazón.
Inflammatory pathway activation - when your immune system activates an inflammatory response.
Loss of neuromuscular junctions - where your nerves communicate less efficiently with your muscles.
How is sarcopenia treated?
Volver al contenidoThe best way to manage sarcopenia is through a combination of healthy lifestyle choices.
Gallucci says that sarcopenia is primarily treated by addressing the underlying causes of muscle loss and implementing interventions to improve muscle mass, strength, and function.
Olsen suggests you chat with your doctor first to find out what's best for your situation.
Ejercicio
Our experts agree that exercise is the most effective form of treatment for sarcopenia.
Gallucci explains that resistance training in particular can stimulate muscle growth and repair.
"This helps to improve your strength, which can lead to health benefits, such as reducing your likelihood of falls and increasing your mobility," he says.
He adds that aerobic exercises can also enhance your heart health, which in turn supports better muscle performance.
"Balance and flexibility exercises also improve overall functionality and movement," he advises.
Nutrición
A balanced diet high in protein is essential for building muscle mass, which can help reduce the long-term effects of sarcopenia.
Leucine is an essential amino acid that plays a key role in building and repairing muscles. For this reason, Gallucci also suggests you incorporate more leucine-rich foods in your diet - such as dairy, fresh meat, and legumes.
Gallucci recommends you aim for 1.2 - 2 grams of protein per kilogram of body weight per day.
Medicina
There are no medicines specifically approved to prevent sarcopenia.
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What is the best diet for sarcopenia?
Volver al contenidoThe ideal diet for treating sarcopenia can vary from person to person.
Olsen says: "The main thing you need is protein, and to be sure you are eating enough food to maintain muscle mass."
Best explains that while nutrition does not directly cause sarcopenia it can still impact your condition both positively and negatively.
"A diet lacking in protein and calories can exacerbate sarcopenia's impact on muscle loss," she says. "Consuming too many processed foods can lead to increased inflammation, which may worsen the condition."
She adds that as we age protein-rich foods can become more difficult to access and chew. This can lead to an over-dependence on more affordable and easier-to-eat processed foods.
Gallucci recommends the following protein-rich foods:
Seafood - such as trout and salmon.
Tofu.
Lentejas.
Frijoles.
Quinoa.
"In addition to increased protein, taking certain dietary supplements may be another way to improve sarcopenia or help prevent the condition," he concludes. "Vitamin D, calcio, and creatine supplements are commonly taken to help decrease the chance of sarcopenia.
"However, it’s always advised that you speak with your doctor before taking any supplements."
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Historial del artículo
La información en esta página es revisada por pares por clínicos calificados.
Próxima revisión: 7 de febrero de 2028
7 Feb 2025 | Publicado originalmente
Escrito por:
Victoria RawRevisado por pares por
Dr Krishna Vakharia, MRCGP

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