RDA, or Recommended Dietary Allowance, is a set of guidelines established by the Food and Nutrition Board of the National Academy of Sciences to determine the daily intake of essential nutrients needed to maintain good health and prevent nutrient deficiencies. These recommendations are based on age, gender, and physiological factors, and serve as a benchmark for individuals to meet their nutritional needs. RDA values are regularly updated to reflect the latest scientific research and are used by health professionals and policymakers to inform dietary recommendations and food labeling. Following the RDA can help individuals make informed choices about their diet and ensure they are getting the necessary nutrients for optimal health.