Sarcopenia: Causes of Muscle Loss and Practical Solutions
Sarcopenia is the age-related loss of muscle mass, strength, and physical performance. It becomes more common with age, but significant muscle loss isn’t something you simply have to accept—it can often be slowed or improved.
What causes muscle loss?
- Aging: Muscle becomes less responsive to the signals that stimulate growth and repair.
- Inactivity: Sitting for long periods or prolonged bed rest can rapidly reduce muscle strength.
- Not eating enough protein: Older adults may eat less because of reduced appetite, dental problems, difficulty cooking, or other factors.
- Chronic diseases: Conditions such as diabetes, heart or lung disease, kidney problems, and inflammatory disorders can contribute.
- Hormonal changes: Age-related changes in hormones involved in muscle maintenance can play a role.
- Poor nutrition or unintended weight loss: Losing weight without adequate protein and resistance exercise can result in muscle loss.
What can help?
1. Strength training is key.
Resistance exercises—such as chair squats, resistance bands, or light weights—help stimulate muscle growth. Aim for strength exercises at least twice a week, progressing gradually.
2. Get enough protein.
Include protein-rich foods throughout the day: eggs, fish, chicken, milk, yogurt, cheese, beans, lentils, or other suitable sources. People with kidney disease should ask their clinician about their individual protein needs.
3. Keep moving.
Walking and everyday activity support mobility and independence. Combining aerobic activity with strength and balance exercises is particularly useful for older adults.
4. Don’t overlook vitamin D and overall nutrition.
Adequate calories, vitamins, minerals, and vitamin D support normal muscle function. Supplements aren’t automatically necessary—testing and medical advice can help determine whether one is appropriate.
5. Address medical causes.
If muscle loss is rapid or accompanied by unexplained weight loss, repeated falls, or significant weakness, a healthcare professional can assess for underlying conditions and medications that may be contributing.
A simple starting point
For someone new to exercise, even sit-to-stand exercises from a sturdy chair, wall push-ups, and regular walking can be a useful beginning. Start at a manageable level and increase gradually.
If an older adult is struggling to climb stairs, rise from a chair, carry everyday objects, or has had repeated falls, it’s worth getting assessed for sarcopenia and other causes of weakness.
