This report delves into the relationship between the Okinawan diet and the health of elderly populations in Japan, examining the diet as a key social determinant of health. The introduction highlights the remarkable longevity of Okinawan residents, attributing it to their unique dietary patterns. The report defines social determinants of health and focuses on food, specifically the Okinawan diet, and its impact on the elderly. It explores how the diet affects quality of life, functional disability, and lifespan. The Okinawan diet, rich in fruits, vegetables, grains, and low in calories and animal products, is linked to reduced risks of diseases and increased longevity. The report also discusses the application of the diet's principles to improve health outcomes in other populations. The findings underscore the importance of dietary patterns and their positive influence on the health and wellbeing of the elderly, emphasizing the role of nutrition in promoting healthy aging and longevity. The report also mentions the benefits of low salt intake, moderate cholesterol levels, suppression of oxidative stress, soy protein and isoflavones.