Why Muscle Loss Happens After 30: Key Reasons Explained

Muscle loss post 30, also known as sarcopenia, can be caused by decreased physical activities, hormonal changes, and reduced protein synthesis. Individuals may lose approximately 3 to 5% of muscle per decade often caused by reduced testosterone and growth hormone, declined mTOR signaling, and enhanced protein resistance, and sedentary lifestyle. It tends to accelerate as people age. It is worth noting that aging muscles may become less effective at turning protein into new muscle tissue and may require higher protein intake to lead the similar repair processes as younger muscles.

Age-related chronic inflammation is yet another reason that can lead to muscle degradation. While gradual muscle los is normal part of ageing, some lifestyle and health factors may accelerate the process. It is vital to comprehend the leading causes of muscle los that can help you take proactive steps to maintain muscle strength.

According to a report published in National Library of Medicine, the decline in physical activities with aging process emerged as the leading factor in the development of strength and muscle loss. Inactive lifestyle can cause muscle atrophy. “Loss of appetite is an additive problem in older adults as insufficient nutrient intake that can also contribute to muscle loss. Therefore, one of the great challenges of aging process is to decline muscle mass loss and loss of strength. Strength training is one important tool to counteract this problem.” ¹

Major Reasons of Muscle Loss

Natural Ageing Process: With the aging process, the body undergoes some inevitable hormonal changes that can impact the muscle mass and strength. Hormones such as testosterone and growth hormone may gradually decline that can bring down body’s capacity to build and repair muscle tissue. The rates jump with age and the disease may impact both sexes equally.

Lack of Physical Activities: If an individual leads a sedentary lifestyle, it can emerge as the chief cause of muscle loss. In the absence of regular exercise, especially strength training, muscles may start to weaken and shrink. If you sit for longer hours without any physical activity, it can accelerate muscle loss. Regular exercises and resistance exercises are vital to maintain muscle mass and overall health.  

Reduced Protein Intake: Protein plays significant role in muscle growth and repair. If your protein intake declines, it will limit the body’s ability to maintain healthy muscle tissue. As the body becomes less efficient at using protein with rising age, it becomes even more vital to include sufficient protein sources to the daily diet. It may include soya milk, almond milk, pulses, lean meats, eggs, dairy products, and various types of nuts.

Poor Nutrition: Beyond protein, deficiency of vital nutrients like calcium, vitamin D, and B vitamins may also cause muscle loss. These crucial nutrients can support muscle function, bone health, and energy production. Regular intake of ultra-processed foods containing largely additives and very few natural foods will enhance the risk of sarcopenia or accelerate its onset.

According to a report featured in Cleveland Clinic, “The most common cause of sarcopenia is the natural aging process. You gradually begin losing muscle mass and strength sometime in your 30s or 40s. This process picks up between the ages of 65 and 80. Rates vary, but you may lose as much as 8% of your muscle mass each decade.” ²

Hormonal Changes: Hormonal imbalance may also cause muscle loss. When there is decreased levels of estrogen in women and testosterone in men, it can potentially impact muscle mass. These changes are natural part of ageing process but thy can determine and influence how the body stores fat and maintains muscle.  

Chronic Stress: Long term stress can cause higher levels of cortisol, a vital hormone that helps break down muscle tissue when remained higher for longer periods. Chronic stress can impact sleep and appetite health further leading to muscle loss.  

Poor Sleep: Sleep can play significant role for muscle growth and recovery. During deep sleep state, the body releases growth hormones that can repair muscle tissue. Insufficient and poor-quality sleep can hamper the process thus making it difficult to maintain muscle mass.  

Medical Conditions: Some health conditions and medicines can also cause muscle loss. Conditions that impact mobility or metabolism can bring down physical activity levels thus leading to muscle loss. There are some medications that can interfere with muscle health.   

FAQs

References

1. National Library of Medicine|Strength and muscle mass loss with aging process. Age and strength loss

2. Cleveland Clinic|Sarcopenia

Disclaimer: This content is for general informational purposes only and should not replace professional medical advice. Always consult a qualified healthcare provider with any questions about your health or treatment options.