Tay-Sachs Disease is a rare genetic disorder that causes progressive damage to the nervous system, primarily affecting infants and young children. This article begins by explaining the genetic cause of the disease, which involves mutations in the HEXA gene leading to the absence of beta-hexosaminidase A, an enzyme essential for breaking down fatty substances in the brain. It describes the symptoms of the condition, including developmental delays, muscle weakness, vision and hearing loss, and seizures. The diagnostic process is explained, highlighting the role of enzyme testing, genetic analysis, and prenatal testing for families with a history of Tay-Sachs. The article also discusses current treatment options, such as anticonvulsants for seizure management and supportive therapies to improve comfort and quality of life. Advances in research, including gene therapy and other emerging treatments, are explored to provide hope for future interventions. The article offers practical guidance for families and caregivers, addressing the emotional and logistical challenges of living with Tay-Sachs. Designed to answer common questions and provide clear, actionable information, this book is a comprehensive resource for understanding Tay-Sachs Disease. The content is written in simple terms to ensure it is accessible and easy to understand for all readers.