New U.S. Dietary Guidelines Emphasize Whole Foods and Protein, Limit Processed Foods

Kennedy stated, "Our message is clear: Eat real food" during a White House briefing. The guidelines encourage the intake of fresh vegetables, whole grains, and dairy products, which have long been considered part of a healthy eating plan. A notable shift in these guidelines is the recommendation to avoid "packaged, prepared, ready-to-eat or other foods that are salty or sweet," a category that includes commonly consumed snacks such as chips, cookies, and candy. This aligns with concerns over ultraprocessed foods, which constitute over half of the calories in the U.S. diet and are linked to chronic diseases including diabetes and obesity.

While the guidelines maintained the recommendation to limit saturated fat intake to no more than 10% of daily calories, they also suggested choosing whole-food sources of saturated fats, such as meat, whole-fat dairy, and avocados. This represents a shift away from previous guidelines that encouraged limiting saturated fat overall. The document notes that options like butter or beef tallow are permissible, despite previous caution against these foods.

The dietary guidelines are updated every five years as mandated by law, providing a framework for federal nutrition initiatives. Despite the guidance, research indicates that only a small percentage of Americans adhere to these recommendations, which have encountered criticism for their effectiveness in addressing diet-related chronic diseases.

The updated guidelines received praise from some nutrition experts. Dr. David Kessler, a former FDA commissioner, remarked on the positive change of encouraging more whole foods and reducing processed carbohydrates. Nutritionist Marion Nestle noted that the guidelines reaffirm well-established scientific consensus regarding saturated fat, despite concerns that they might diverge from established nutritional evidence.

This edition of the guidelines is notably shorter, at just 10 pages, following Kennedy's aim to simplify the dietary advice. Notably, the guidelines will significantly influence the National School Lunch Program, which serves approximately 30 million children daily and must adhere to federal nutrition standards. However, implementing these new standards in schools may take years, according to Dietitian Diane Pratt-Heavner from the School Nutrition Association.

Interestingly, the guidelines did not incorporate recommendations from a panel of nutrition experts who assessed ultraprocessed foods. Their hesitance stemmed from uncertainties regarding the quality of the research linking these foods to health issues. The FDA and USDA are working on defining ultraprocessed foods, though this process is expected to be lengthy.

The guidelines also propose an increase in protein intake, changing the recommended dietary allowance from 0.8 grams per kilogram of body weight to between 1.2 and 1.6 grams. While the specific rationale for this shift is unclear, Dr. Ludwig from Boston Children’s Hospital emphasized that higher protein consumption could help displace processed carbohydrates in the diet.

Regarding added sugars, the guidelines advise avoiding them entirely, stating that no amount is considered healthy. Previous recommendations allowed for less than 10% of daily calories from added sugars—approximately 12 teaspoons for a 2,000-calorie diet—but current guidelines suggest no single meal contain more than 10 grams (about 2 teaspoons) of added sugars. Most Americans consume approximately 17 teaspoons of added sugars per day.

Moreover, the new guidelines modify previous alcohol recommendations, suggesting a general reduction in alcohol consumption for better health. Alcohol should be avoided by pregnant women and those with a history of alcohol use disorder, although the earlier restrictions on daily alcohol intake have been removed.