This research project provides a comprehensive overview of Type II diabetes, also known as diabetes mellitus. The report defines the disease, emphasizing increased blood sugar levels and insulin resistance. It explores various diagnostic methods, including the A1C test, random blood sugar tests, fasting blood sugar tests, and oral glucose tolerance tests. The project details the symptoms and complications of the disease, such as increased thirst, frequent urination, and potential long-term effects like retinopathy and kidney disease. It also discusses the histological changes associated with the disease, focusing on the impact of hyperglycemia and oxidative stress. The report outlines the treatment options, including weight loss, healthy eating, physical activity, blood sugar monitoring, diabetic medications, and insulin therapy. Additionally, it highlights preventive measures and suggests directions for future research, particularly in genetic components. The project concludes with a summary of the key findings and includes a list of relevant references.