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TCU Nutritional Sciences Expert Discusses New US Dietary Guidelines

Apr 30, 2026

2 min

As updated federal recommendations roll out, Samantha Davis highlights gaps between science and messaging.

When the 2025-2030 Dietary Guidelines for Americans were released, the message seemed straightforward: Eat more whole foods and reduce processed ingredients and sugar intake.

But for Samantha Davis, professor of professional practice in nutritional sciences in TCU’s Louise Dilworth Davis College of Science & Engineering, a closer look reveals a more complicated picture.

“These guidelines influence far more than individual choices,” she said. “They shape what’s served in schools, child care programs and federal nutrition programs nationwide. That’s why it’s so important to ensure the recommendations and the messaging are aligned with the science.”

A Growing Public Health Challenge

The conversation comes amid rising concerns about chronic disease in the United States. More than 70% of American adults are overweight or obese, and nearly one in three adolescents has prediabetes. At the same time, almost 90% of health care spending is tied to chronic disease.

“These are not small trends,” she said. “Nutrition guidance plays a significant role in how we respond.”

When the Math Doesn’t Match the Message

While the guidelines recommend limiting saturated fat to 10% of daily calories, following the suggested servings, particularly for animal proteins and full-fat dairy, the numbers do not add up.

“When you actually break it down, those recommendations can push intake closer to 20%,” Davis said. “The math is not mathing.”

That gap raises concerns for heart health, as higher saturated fat intake is associated with elevated LDL cholesterol and increased cardiovascular risk.

Rethinking Protein in the American Diet

The updated guidelines increase protein recommendations, in some cases significantly. However, protein deficiency is not a widespread issue in the United States.

“The idea that more protein automatically leads to more muscle is a misconception,” she said. “Exercise builds muscle. Protein supports maintenance and repair.”

Davis also notes that protein is found across a variety of foods, including grains and vegetables, reinforcing the importance of balance ahead of overemphasis.

Not All Fats Function the Same

The guidelines encourage incorporating “healthy fats,” but distinctions between fat types may not always be clear.

“There’s important nuance here. Some fats support heart health, while others are linked to increased risk. That difference matters,” she said. “If we’re trying to address obesity at a population level, we need to consider where calories are coming from.”

For most people, nutrition guidance is distilled into quick takeaways and simplified messaging.

“People remember what they see and hear in an instant,” she said. “If those messages aren’t clear or consistent, it can lead to confusion.”

Her advice remains grounded in fundamentals: Focus on whole, minimally processed foods and look beyond trends for long-term health.

Davis’ expert perspective was also featured in Fort Worth Weekly, contributing to the broader conversation about how national nutrition guidance shapes everyday life.

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Oct 9, 2026

3 min

Why Polls Are a Snapshot, Not a Forecast

The poll numbers will keep coming between now and Election Day. Keith Gaddie wants you to ask a different question: not who's ahead, but why. Gaddie is the Hoffman Chair of the American Ideal and a professor at Texas Christian University. He says the biggest mistake people make is treating polls like a horse race. A poll is a photo, not a prediction "A poll is just a snapshot of a sample of reality at a particular point in time, and they age out really quickly." The numbers show what one group of people thinks right now. The real work, Gaddie says, is figuring out why they think that way and how it shapes the choices they make. And those opinions are often shallow. Gaddie says that "most of the time, when polling, people haven't thought about a question until you ask them, so their opinions are immediate. It is a knee-jerk reaction to the question." Noise vs. a real trend Poll movement comes from two places. One is the sample itself. Gaddie explains that "any oscillation within 4 or 5 points, if it's happening all the time, that's just from the sample. That's just noise." A real shift looks different: numbers that keep moving in the same direction over time. Don't expect many minds to change. "There are very few true undecideds. Most people are out there actually seeking information to verify prejudice that they have or preference that they have." What does move an election is a true crisis. The 2008 financial meltdown helped lock in Barack Obama's first win, and Gaddie says crises like that tend to work against the party in power. October surprises, on the other hand, are rare. Gaddie says, "They can't be engineered or manufactured." Today's fragmented media makes it harder still. He says, "You can't create a singular story that moves in one direction." Why turnout is the real story Hardcore partisans always vote. The voters in the middle turn out when something gives them a reason, and you can't predict which party they'll back. This year, Gaddie sees a signal in Texas, where more people voted in the Democratic primary than the Republican one. He says, "Primary turnout was at a record level." And in his view, high turnout usually means one thing: "When you get high turnout, you're usually voting for change." The reason, he says, is that "anger and disappointment and desire are much more powerful motives." Presidential years pull more voters because the race is national and the choices feel simple. Midterms are harder because, as Gaddie puts it, "life gets in the way." He adds: "Once you get registered, you have to work really hard to not be able to vote, even in Texas." What to watch instead of the numbers Look at how each candidate presents themselves for the job they're running for. Then compare the reality each candidate describes with the one you see. Gaddie's reminder: "only you know what that is, and we don't all see the same reality." The election isn't over when the votes are counted Gaddie also has a warning about what comes after Election Day. He says, "This election will not be over until the last lawsuit." He believes there are "procedural concerns that everyone ought to have." He points to a line from political scientist V.O. Key that he thinks captures what's at stake: "If a democratic regime is to work successfully, it must be generally agreed that contestants for power will not shoot each other and that ballots will be counted as cast." The takeaway A poll number is where the story starts, not where it ends. Turnout, timing, trust in the process and the candidates themselves will tell you far more about how this midterm plays out. Covering the midterms? Click on Keith's icon below to connect with him. He can speak to: Polling and public opinion Midterm turnout Texas and Southern politics Voting rights and redistricting Democracy and trust in elections

Sep 25, 2026

2 min

Texas Senate Rematch Puts Tarrant County Back in the Political Spotlight

Less than a year after Democrats flipped a Texas Senate seat in Tarrant County, the two candidates are preparing for a November rematch — this time under very different electoral circumstances. Democratic State Sen. Taylor Rehmet defeated Republican Leigh Wambsganss by 14 percentage points in a January special-election runoff for Senate District 9, a district Donald Trump carried by 17 points in the 2024 presidential election. Now Rehmet and Wambsganss will face each other again on Nov. 3, with the winner securing a full four-year term. In a recent Fort Worth Report article examining the race, Adam Schiffer, professor of political science at Texas Christian University, explains why the dynamics of a regular midterm election could be significantly different from those surrounding January's special election. Special elections typically attract lower turnout, and January's runoff featured only Rehmet and Wambsganss. This fall, Tarrant County voters will see more than 70 races on the ballot, creating a much different political environment. “Democrats are extremely energized and motivated to vote right now, and Republicans are a bit dispirited,” Schiffer told the Fort Worth Report. “So that’s the kind of thing that then can work to Rehmet’s advantage.” Professor Schiffer studies American politics, with an emphasis on the news media, elections, and public opinion. His recent work has covered the hot topics of media bias and presidential primary elections. View his profile Schiffer also points to competing forces that could influence the contest. A larger electorate and greater partisan attention could change the makeup of the voters who participate, while Democratic enthusiasm could continue to benefit Rehmet. The race provides a timely opportunity to examine broader questions about voter turnout, partisan loyalty, candidate positioning and whether the political conditions that produce a special-election upset can carry over into a midterm election. Schiffer can provide expert perspective on the Senate District 9 rematch, Tarrant County's changing political landscape, voter behavior and the role that turnout and partisan enthusiasm can play in closely watched elections. To arrange an interview today, simply click on his profile below.

Sep 3, 2026

2 min

Patent No. 50: How an Inventor's Mindset Is Shaping TCU Research

As TCU's vice provost for research, Reuben F. Burch V has spent his career turning research into real-world solutions. This summer, that track record reached a milestone: his 50th patent, earning him the designation "Prolific Inventor." Burch's inventing career began during his years at FedEx Express, where he helped develop the rugged handheld device now used by couriers around the world. His first patent wasn't the handheld device itself, it was the design of a wearable version that freed couriers' hands, making the job safer and more efficient. Patent No. 50 grew out of a different question: how do you study movement where it actually happens, on tracks, on football fields, on rugged terrain, rather than only in a lab? The resulting technology uses a swarm of drones to capture performance data in real-world environments, giving TCU researchers a new way to study athletes of all kinds in their own arenas. "Fifty means just as much to me as my first one did," Burch said, "and it means a lot more that I got it while I'm here at TCU." "Reuben has an extraordinary ability to see around corners," said Jim Weinstein, director of TCU's Roach Institute of Athlete Engineering. "He recognizes problems others haven't yet identified and then creates the technology needed to solve them. This patent isn't just another invention, it's a research capability that will change how we study movement and human performance." That same builder's mindset is now fueling TCU's LEAD ON: Values in Action strategic plan to grow the university's research enterprise. In Burch's first year at TCU, competitive external research awards increased by 79.7 percent, with new partnerships established with Advanced Functional Fabrics of America, Deakin University, and the Fort Worth Nature Center & Refuge, alongside the launch of the Roach Institute for Athlete Engineering. "The researchers were already here," Burch said. "The momentum came from helping unlock their potential." Burch is available to speak with media on athlete engineering, a discipline he founded, and how its principles apply across sports, industrial (repetitive motion tasks), tactical (military and first responder) and at-risk populations. He can also speak to AI, human factors and ergonomics, advanced manufacturing, workforce and economic development, and the changing landscape of research funding and enterprise building in higher education. Read the full TCU story, "Patent No. 50: Reuben Burch Brings Inventor's Approach to TCU Research," here. To arrange an interview or request a comment, click through to Reuben Burch's profile below.