Sarcopenia is an age-associated decline in skeletal muscle mass, muscular strength, mitochondrial efficiency, and physical performance capacity. The condition is strongly linked to reduced muscle protein synthesis, impaired mitochondrial bioenergetics, inflammatory signaling, oxidative stress accumulation, insulin resistance, reduced anabolic signaling sensitivity, inactivity, inadequate protein intake, and declining neuromuscular efficiency. Muscle tissue undergoes continuous remodeling throughout life, requiring sufficient amino acids, mineral cofactors, cellular energy production, antioxidant protection, and mechanical stimulation to preserve structural integrity and metabolic activity. Loss of lean muscle mass may contribute to weakness, slower movement, fatigue, impaired balance, reduced endurance, decreased metabolic flexibility, and diminished glucose disposal capacity. Aging muscle tissue may also experience altered mTOR signaling, reduced IGF-1 responsiveness, elevated inflammatory cytokine activity, mitochondrial dysfunction, oxidative injury, and increased catabolic signaling. Chronic inflammatory dietary patterns, low physical activity, highly processed foods, inadequate intake of legumes and amino-acid-rich plant foods, and insufficient mineral intake may contribute to progressive muscular decline over time. A whole food plant-based dietary pattern emphasizing legumes, lentils, soy foods, quinoa, pumpkin seeds, hemp seeds, oats, leafy greens, mushrooms, and antioxidant-rich vegetables may help support muscular maintenance, amino acid availability, mitochondrial metabolism, and metabolic resilience. Whole plant foods naturally provide leucine, lysine, magnesium, potassium, phosphorus, iron, zinc, and antioxidant phytochemicals involved in muscular contraction, cellular repair systems, ATP production, and protein synthesis regulation. Legumes including lentils, chickpeas, black beans, edamame, soybeans, and split peas provide significant amounts of branched-chain amino acids and complementary protein structures associated with muscle maintenance pathways. Quinoa, oats, pumpkin seeds, hemp seeds, spinach, broccoli, mushrooms, and cruciferous vegetables contribute minerals and phytochemicals associated with mitochondrial support, antioxidant defense systems, inflammatory regulation, and cellular energy metabolism. Polyphenol-rich foods including blueberries, green tea, turmeric, and leafy greens may also help support oxidative balance and exercise recovery pathways associated with healthy muscle preservation. Adequate hydration, resistance-based movement, sufficient caloric intake from whole plant foods, consistent amino acid intake throughout the day, and minimizing ultra-processed foods may help support muscular integrity, mobility, endurance, and metabolic health associated with healthy aging.