Sarcopenia: Causes of Muscle Loss and How to Prevent It
Sarcopenia is the progressive loss of skeletal muscle strength, muscle mass, and physical function. It becomes more common with age, especially after 60, and can increase the risk of falls, fractures, difficulty walking, and loss of independence.
The good news is that muscle loss can often be slowed, and strength and function can improve with the right combination of exercise, nutrition, and treatment of underlying health problems.
1. What causes muscle loss?
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Aging: Muscles may become smaller and recover more slowly over time.
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Physical inactivity: Sitting for long periods, bed rest, and reduced movement accelerate muscle loss.
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Insufficient protein or calories: Not eating enough can leave the body without the nutrients needed to maintain muscle.
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Chronic illnesses: Conditions such as diabetes, cancer, and some inflammatory diseases can contribute to muscle loss.
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Hormonal and nutritional problems: Certain hormonal disorders and deficiencies can affect muscle health.
Unintentional weight loss, rapidly worsening weakness, or muscle loss at a younger age should not automatically be attributed to aging.
2. The most effective solutions
Start with exercises such as sit-to-stand from a sturdy chair, wall push-ups, resistance bands, or light weights. Progress gradually as strength improves. Resistance exercise is a cornerstone of sarcopenia management.
Include eggs, milk or yogurt, fish, chicken, beans, lentils, tofu, or other protein-rich foods at meals. Older adults with muscle loss may benefit from increased protein intake, tailored to their health and nutritional needs.
Walking supports mobility and general health. Balance exercises can help reduce fall risk. Walking alone, however, usually isn’t enough to rebuild muscle strength.
3. A simple weekly starting plan
For someone who is medically stable and able to exercise safely:
| Day | Activity |
|---|---|
| Monday | Light strength exercises |
| Tuesday | Comfortable walking |
| Wednesday | Strength and balance exercises |
| Thursday | Walking or gentle movement |
| Friday | Strength exercises |
| Weekend | Gentle activity and recovery |
Begin at a comfortable level and adjust for pain, balance problems, and existing medical conditions. Anyone with significant weakness or a history of falls should seek guidance from a healthcare professional or physiotherapist before starting.
4. Are supplements necessary?
Not always. Protein supplements can be useful if food intake is insufficient, but they do not replace exercise. Vitamin D or other supplements may be appropriate when a deficiency or specific medical need is identified. People with kidney disease should seek medical advice before substantially increasing protein intake or starting supplements.
5. When to get checked
Consult a clinician if you notice ongoing muscle loss, unexplained weight loss, repeated falls, or increasing difficulty climbing stairs or rising from a chair. A clinician can assess strength and mobility and investigate possible contributors such as malnutrition, thyroid disease, anemia, or chronic illness.
For further reading, see the National Institute on Aging’s guide to strength training and the NIH overview of sarcopenia .
To make the advice more useful: Is this information for someone over 60 who is already losing muscle, or are you looking to prevent muscle loss before it starts?
