Valvular heart disease (VHD) is a leading cause of morbidity and mortality globally, particularly in older populations. It plays a critical role in the development of heart failure (HF), as the two conditions share several pathophysiological mechanisms. This article reviews the connection between valve disease and heart failure, focusing on how impaired valve function contributes to cardiac remodeling, increased hemodynamic load, and reduced ventricular function. Advances in diagnosis and treatment, including surgical and transcatheter interventions, are also discussed, with a focus on improving patient outcomes.