Decreased muscle mass, also known as muscle atrophy or sarcopenia, refers to the loss of skeletal muscle tissue. Muscle loss can happen for various reasons, including:

  • Aging - Typically after age 30, we slowly begin to lose muscle mass. Around 3-5% of muscle is lost per decade. By age 80, around 30% of muscle mass may be lost.
  • Lack of physical activity - If muscles are not used regularly with resistance training and other exercise, they will shrink and become weaker, leading to reduced mass. The classic phrase "use it or lose it" applies here.
  • Poor nutrition - Consuming inadequate protein and calories can accelerate muscle loss, especially during weight loss diets. Getting enough high-quality protein is key.
  • Illness or injury - Certain diseases, hormonal disorders, and injuries/immobilization that restrict movement can spur rapid decreases in muscle size.
What are the effects? Losing significant muscle mass can negatively impact strength, functional mobility, metabolism, and overall health. Some key issues include:
  • Increased weakness
  • Impaired balance and gait
  • Higher risk of falls and fractures
  • Reduced ability to perform daily activities
  • Lower resting metabolism and fat burning
  • Weight gain - more fat, less muscle
  • Higher inflammation and insulin resistance
How can it be prevented? While some loss is inevitable with aging, we can slow this natural decline. Strategies include strength training 2-3 times per week, getting enough protein (0.5 - 1 gram per pound of body weight daily), staying active, and maintaining a healthy body weight. In summary, decreased muscle mass can result from poor lifestyle habits and health conditions. Prioritizing muscle-building exercise and nutrition can help preserve strength and function into older age. For more information, consult with the professionals at Thrive Hormone Therapy.

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