Age-related muscle loss, known as sarcopenia, can be influenced by several factors, including hormonal changes, decreased physical activity, and nutritional deficiencies. As people age, levels of testosterone and growth hormone decline, affecting muscle protein synthesis. Reduced activity levels can lead to muscle atrophy, while inadequate intake of protein and other essential nutrients can hinder muscle maintenance. Additionally, chronic inflammatory conditions and certain medications may also play a role in accelerating muscle loss, making it important to incorporate resistance training and proper nutrition in older adults' routines.