Nutritionists push back as federal guidelines tout more protein

Nutrition experts are pushing back as the federal government’s newest dietary advice gives protein a more prominent place, raising a basic question: is Washington now institutionalizing a protein craze that the science does not clearly support? The debate lands in the Dietary Guidelines for Americans, 2025-2030, the government’s central nutrition playbook and the blueprint for federal food programs, school meals and public advice.

The 2025 Dietary Guidelines Advisory Committee submitted its Scientific Report on December 10, 2024, and the U.S. Department of Health and Human Services and the U.S. Department of Agriculture then opened a 60-day public comment period. The final edition is now the current federal guidance. Under the Trump administration’s framing, the message became “Eat real food,” while Health Secretary Robert F. Kennedy Jr. declared, “We are ending the war on protein.”

That shift is what has set off alarm bells among nutrition scientists. PBS News reported that the new guidance leans harder on red meat, whole milk and other animal sources of protein while downplaying plant-based foods. Top nutrition experts interviewed by PBS said Americans already consume more protein than they need and argued that there is no new evidence most people should drastically increase intake. For most adults, the longstanding benchmark remains 0.8 grams of protein per kilogram of body weight per day, according to the American Heart Association, with somewhat higher needs for children and for pregnant or lactating women.

The criticism is not only about quantity. It is also about what kind of protein the government is encouraging. Stanford Medicine said the final guidelines departed from the evidence-based recommendations of the 2025 DGAC, and The Lancet described the 2025-2030 framework as prioritizing animal-based protein sources, full-fat dairy products and saturated fats. That has left critics arguing that policy is moving ahead of the evidence review that was supposed to guide it.

Dariush Mozaffarian of Tufts University offered a narrower case for more protein, saying it can help when someone is actively building muscle through strength or resistance training. But for the broader population, he and other experts say the science does not support a sweeping push to double down on protein. The result is a policy fight with real stakes: if federal advice elevates protein beyond what most Americans need, the winners are likely to be meat and dairy producers, while the losers could be the plant-based foods that public health experts say still deserve a larger place at the table.