Common Causes of Sarcopenia
1. Aging
After about age 30, people gradually lose muscle mass, and the rate of loss often accelerates after age 60 if no preventive measures are taken.
2. Physical inactivity
Muscles weaken when they are not used regularly. Prolonged bed rest or a sedentary lifestyle can speed muscle loss.
3. Inadequate protein intake
Protein provides the amino acids needed to build and repair muscle. Not getting enough protein can contribute to muscle loss.
4. Chronic health conditions
Conditions such as diabetes, chronic kidney disease, heart failure, and some inflammatory diseases can increase the risk of sarcopenia.
5. Hormonal and metabolic changes
Changes in hormones and metabolism that occur with aging may reduce the body’s ability to maintain muscle.
6. Poor nutrition
Low overall calorie intake or deficiencies in nutrients such as vitamin D can also affect muscle health.
Signs and Symptoms
- Reduced muscle strength
- Difficulty climbing stairs
- Slower walking speed
- Trouble rising from a chair
- Poor balance
- Frequent falls
- Noticeable loss of muscle size
Evidence-Based Solutions
Regular resistance exercise
Strength training is the most effective treatment for sarcopenia. Exercises using weights, resistance bands, or body weight can help increase muscle strength and mass.
Eat enough protein
Protein-rich foods include:
- Lean meat
- Fish
- Eggs
- Dairy products
- Beans and lentils
- Soy foods
The ideal amount varies by age, body size, activity level, and medical conditions.
Stay physically active
Walking, balance exercises, and flexibility training complement strength exercises and improve mobility.
Address underlying medical conditions
Managing chronic diseases and reviewing medications with a healthcare professional may help reduce muscle loss.
Ensure adequate nutrition
A balanced diet with enough calories, vitamins, and minerals supports muscle maintenance. Some people may benefit from vitamin D supplementation if they are deficient.
When to Seek Medical Advice
Talk to a healthcare professional if you notice:
- Rapid or unexplained muscle loss
- Frequent falls
- Difficulty performing daily activities
- Progressive weakness
They can evaluate for sarcopenia and rule out other causes of muscle weakness.
Key takeaway
Sarcopenia is not an inevitable part of aging. Regular resistance exercise, adequate protein intake, good nutrition, and management of underlying health conditions can help slow muscle loss and improve strength at any age.
