Sarcopenia: Causes of Muscle Loss and Practical Solutions
Sarcopenia is the age-related loss of muscle strength, muscle mass, and physical function. It becomes more common with advancing age, but muscle loss isn’t inevitable or completely irreversible. Regular physical activity can help preserve strength and independence.
Why muscle is lost
Several factors can contribute:
- Aging-related changes in muscle and the nervous system
- Physical inactivity, especially prolonged sitting or bed rest
- Not eating enough protein or calories
- Chronic illnesses such as diabetes, heart failure, or cancer
- Inflammation and certain hormonal changes
- Significant weight loss, particularly when muscle is lost along with fat
💪 What helps most
1. Do resistance exercise.
This is one of the most effective ways to maintain or rebuild muscle. Strength training can include weights, resistance bands, machines, or appropriate body-weight exercises. NIA recommends muscle-strengthening activities at least two days a week, working the major muscle groups.
For example, depending on your abilities:
- Sit-to-stand from a sturdy chair
- Wall push-ups
- Resistance-band rows
- Step-ups
- Light weights or water bottles
Start gently and increase resistance gradually.
2. Get adequate protein.
Protein provides the amino acids needed to maintain muscle. Good sources include eggs, fish, poultry, dairy, beans, lentils, soy, nuts, and seeds. Protein needs can be higher in older adults, but people with kidney disease may need individualized protein advice rather than simply increasing protein.
3. Keep moving between workouts.
Walking, gardening, climbing stairs, and other everyday activity complement strength training. Physical activity can improve mobility and help maintain independence.
4. Don’t neglect balance.
Balance exercises are particularly useful because muscle weakness can contribute to falls. Combining strength, aerobic, and balance activities is a good approach for older adults.
When to get checked
If you’re experiencing rapid or unexplained weight loss, increasing weakness, repeated falls, difficulty getting out of a chair, climbing stairs, or carrying everyday objects, talk with a healthcare professional. Muscle weakness can sometimes be caused or worsened by an underlying illness, medication, poor nutrition, or another treatable problem.
