Final answer:
Muscle atrophy can be caused by diseases and conditions like cancer and AIDS, the natural process of aging leading to sarcopenia, and physical inactivity. Age-related muscle loss is often irreversible, but exercise can help delay and mitigate its effects.
Step-by-step explanation:
Factors Causing Muscle Atrophy
Muscle atrophy, or loss of muscle mass, is influenced by several factors. Here are three primary reasons that can lead to declining muscle strength:
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While some forms of atrophy, such as those due to disuse, can potentially be reversed with exercise, age-related sarcopenia is typically not reversible. Engaging in regular physical activity can, however, delay the onset and reduce the effects of muscle atrophy.