A wide variety of research papers are included in this exhaustive analysis. These studies investigate a variety of issues, including cardiovascular health, diabetes prevention, nutritional therapies, and cultural influences on dietary choices. Throughout the investigations, a number of different techniques were utilized. These methodologies included observational studies, intervention trials, and analyses such as cluster and factor analysis. The most important findings highlight the value of comprehensive nutritional approaches, indicating connections between particular dietary patterns and health outcomes. Particularly noteworthy is the fact that the Mediterranean diet has been shown to have an impact on cardiovascular health after a myocardial infarction. On the other hand, difficulties such as self-reported data limits, adherence issues, and potential biases are acknowledged, and researchers are urged to address these concerns in subsequent studies.