Dr. Sharon M. Donovan, a professor of nutritional sciences and the Melissa M. Noel Endowed Chair in Nutrition and Health, discussed the newly released 2025-2030 Dietary Guidelines for Americans with News Bureau research editor Sharita Forrest. Donovan previously co-created the 2020 federal guidelines and provided insights on the latest version that has generated both praise and criticism.
Read More
The current guidelines are more concise than past editions, with some praising their user-friendliness, while critics argue they lack specificity and may contain inaccuracies. A contentious point is the updated alcohol recommendation, which now suggests consuming less alcohol instead of adhering to previous limits of one drink per day for women and two for men. A review from the National Academy of Sciences, commissioned by Congress, indicated that any alcohol consumption increases the risk of cancer, including major types such as breast and colorectal cancer. This critical information appears to not be reflected in the new guidelines.
The guidelines also emphasize full-fat dairy and animal protein, diverging from previous suggestions of lower-fat options. Despite promoting higher-fat meats and dairy, the guidelines maintain a recommendation to limit saturated fat intake to no more than 10% of total calories. For a 2,000-calorie diet, this translates to a limit of 200 calories or approximately 22 grams of saturated fat daily.
Challenges arise when calculating the intake from full-fat dairy and meats. For instance, three servings of full-fat dairy would contribute about 14 grams of saturated fat, leaving little room for additional sources like butter or fatty meats, which can be high in saturated fat.
Additionally, the guidelines recommend minimizing highly processed foods due to their negative effects on gut health. Research shows that most U.S. adults consume less fiber than the recommended daily amounts (25 grams for women and 38 grams for men), with average intakes around 14-16 grams. The new dietary guidelines suggest three servings of vegetables, two servings of fruits, and two to four servings of whole grains daily, which can help meet fiber needs.
Concerns have been raised regarding the definition of essential fatty acids within the guidelines. Contrary to suggestions that these nutrients can be synthesized by the body, essential fatty acids—linoleic acid and alpha-linolenic acid—must actually be consumed. Good sources of alpha-linolenic acid include flaxseeds and chia seeds, while fatty fish provide beneficial fatty acids like DHA and EPA.