Sarcopenia and heart failure are interconnected through a bidirectional relationship. Cardiovascular remodeling is a critical mediator of this connection. Common pathophysiological mechanisms include chronic inflammation, oxidative stress, and insulin resistance. These mechanisms form the basis of both diseases. Cardiovascular remodeling causes worsening muscle wasting in sarcopenia and cardiac dysfunction in heart failure. The review integrates recent clinical and experimental evidence. It discusses new therapeutic targets aimed at disrupting these common pathways. The analysis offers a unified framework for understanding mechanistic links with implications for research and clinical strategies.