This research work explores the causes, consequences, and prevention of alimentary diseases resulting from unhealthy nutrition. The paper highlights how improper dietary habits, excessive consumption of processed foods, and lack of essential nutrients contribute to the development of metabolic disorders, obesity, diabetes, and cardiovascular diseases. It also discusses the importance of nutritional education, balanced diets, and modern technologies in preventing these conditions. The findings emphasize that improving public awareness and promoting healthy eating behaviors from early childhood are key strategies to reduce nutrition-related diseases and enhance overall public health.