The 2025–2030 Dietary Guidelines for Americans represent the most meaningful shift in U.S. nutrition policy in decades. For the first time, federal guidance moves away from nutrient fear and calorie math and back toward real, whole foods — prioritizing protein, full-fat dairy, reduced added sugars, fewer ultra-processed foods, and even acknowledging low-carbohydrate diets for certain populations. This article breaks down what actually changed, why it matters, and where nuance is still needed.