What is loss of muscle mass?
Muscle loss, also known as muscle atrophy, refers to the gradual loss of muscle tissue over time. It can occur due to aging, lack of physical activity, poor nutrition, illness, or injury. Some key points about muscle loss include:
- Sarcopenia - the age-related loss of muscle mass that begins in our 30s and progresses with aging
- Disuse atrophy - muscle loss from not using our muscles enough due to bedrest, sedentary lifestyle, or immobilization from casts
- Cachexia - excessive muscle and weight loss often associated with cancer, chronic illness, or inflammation
Losing muscle mass matters because it can lead to:
- Decreased strength
- Higher risk of falls and fractures
- Reduced mobility and loss of independence
- Increased body fat and obesity
- Impaired glucose metabolism and diabetes risk
Fortunately, muscle loss can often be slowed, stopped, or reversed with targeted intervention. Strategies include:
- Resistance training to build muscle
- Getting enough protein - shoot for 0.5-0.7g per lb bodyweight daily
- Balancing hormones like testosterone through replacement therapy or supplements if levels are low
- Treating underlying illnesses contributing to wasting
Overall, some loss of muscle is normal with aging, but significant wasting can really impact health and longevity. Maintaining muscle should be a lifelong goal. Consistent exercise, diet, hormone balance, and disease management play key roles in preserving lean mass as we get older. Reach out if you have any other questions!