San Diego, CA
Opinion: As a cardiologist, I know the dietary guidelines are failing our hearts
Heart disease — affecting almost half of American adults — is the leading cause of death in the United States, claiming 700,000 lives each year.
As a practicing cardiologist for more than 20 years, I’ve watched patients do everything “by the book.” They eat according to the Dietary Guidelines for Americans — the federal government’s blueprint for nutrition policy — and still see their weight climb, blood pressure rise, and heart health deteriorate.
The problem isn’t their effort. It’s the guidance itself, which promotes high-carbohydrate, low-fat diets that can actually worsen metabolic health, which can in turn worsen heart disease. Many assume that by following the government’s recommendations they can improve their health — but, too often, the opposite is true.
With the next edition of the Dietary Guidelines scheduled for release this month, we have a critical opportunity to move beyond outdated orthodoxy and align federal nutrition policy with modern science and clinical experience. Done right, this update can turn back the tide of chronic illness and save lives.
Since 1980, the Departments of Agriculture and Health and Human Services have issued the Dietary Guidelines every five years. These recommendations shape not only personal choices but also the food in school cafeterias, military mess halls, hospitals and nursing homes. They inform SNAP and WIC benefits, nutrition education, and even the labels on grocery store shelves.
From the start, however, the guidelines steered Americans in the wrong direction. They marked a sharp departure from prior eating patterns by encouraging Americans to cut back on natural dietary fats and rely more heavily on refined high-carbohydrate foods. Saturated fat — and cholesterol by extension — were unjustly stigmatized, while bread, pasta and cereal became staples of the American diet.
The recommendations were not made with a metabolically vulnerable population in mind. For people already struggling with insulin resistance, obesity or diabetes, a high-carbohydrate diet frequently only compounds the problem by driving up insulin, promoting visceral fat storage around vital organs, and fueling a cycle of weight gain and chronic disease.
Four decades later, the guidelines remain out of step with science and with the health needs of the majority of Americans. They impose arbitrary caps on saturated fat, despite evidence showing no consistent link to higher rates of heart disease or mortality. They recommend dietary protein well below optimal levels for most populations. And they direct Americans to get 45-65% of their calories from carbohydrates — sidelining low-carb or ketogenic diet options proven to support weight loss, stabilize blood sugar, and reduce the risk factors that drive heart disease.
Americans are being pushed toward metabolically damaging eating patterns.
Today, 93% of Americans live with metabolic dysfunction — meaning their bodies struggle to convert food into energy efficiently. This breakdown in basic metabolic processes fuels the country’s epidemic of chronic disease. More than 75% of Americans are now overweight or obese. Heart disease mortality rates have increased from the 2010s to the 2020s, even as cholesterol levels have steadily fallen.
Put plainly: Federal nutrition policy has fallen far short of making Americans healthier. I know this to be true not only from statistics but from my own patients’ journeys. Many of them ate exactly as federal guidance prescribed and still found themselves gaining weight and developing hypertension, diabetes and heart disease. For years, I resisted the idea that fault could lie with the guidelines.
Like most physicians, I was trained to be wary of fat and to consider carbohydrates as the foundation of a healthy diet. I dismissed suggestions that a low-carb or ketogenic diet could improve cardiovascular outcomes.
But then I tried it myself — and my own weight, cardiovascular markers, and energy improved. When I cautiously introduced the approach to my patients, I saw transformations I couldn’t ignore: their insulin sensitivity, blood sugar levels and blood pressure began to improve. These changes struck at the true drivers of coronary heart disease — metabolic dysfunction, obesity and type 2 diabetes — all stronger predictors than cholesterol levels.
Their lives changed without a scalpel or a prescription. And their experiences mirrored what the science was increasingly showing: that the old low-fat, high-starch model had it backwards.
A review of randomized trials found that low-carbohydrate diets significantly improved weight, blood sugar and blood pressure — the very risk factors that drive heart disease.
Another analysis comparing different levels of carbohydrate restriction showed consistent benefits across degrees of reduction. And, in patients with type 2 diabetes, ketogenic approaches have dramatically lowered average blood sugar as measured by HbA1c — a long-term measure of glucose control — while delivering substantial weight loss, all changes known to reduce cardiovascular complications.
Yet our national guidelines remain stuck in an outdated paradigm.
The upcoming 2025-2030 Dietary Guidelines offers a chance to finally get it right — to align federal recommendations with the latest, most rigorous evidence. That means prioritizing whole foods, removing limits on saturated fats, optimizing protein intake, and including low-carbohydrate and ketogenic options for the metabolically vulnerable.
The nation’s leading killer isn’t inevitable. If the Dietary Guidelines are updated to reflect modern science, millions of Americans could soon be on the path to reclaiming their heart health.
Bret Scher, MD, is a board-certified cardiologist and lipidologist, and the founding medical director of the Coalition for Metabolic Health.
UNLV Rebels (16-14, 11-8 MWC) at San Diego State Aztecs (19-10, 13-6 MWC)
San Diego; Friday, 10 p.m. EST
BOTTOM LINE: UNLV faces San Diego State after Kimani Hamilton scored 24 points in UNLV’s 92-65 victory over the Utah State Aggies.
The Aztecs have gone 13-2 in home games. San Diego State is eighth in the MWC with 9.0 offensive rebounds per game led by Miles Heide averaging 2.0.
The Rebels have gone 11-8 against MWC opponents. UNLV ranks eighth in the MWC shooting 34.4% from 3-point range.
San Diego State averages 79.1 points per game, 0.6 more points than the 78.5 UNLV gives up. UNLV averages 7.2 made 3-pointers per game this season, 1.9 fewer made shots on average than the 9.1 per game San Diego State allows.
The teams play for the second time in conference play this season. San Diego State won the last meeting 82-71 on Jan. 24. Miles Byrd scored 23 points points to help lead the Aztecs to the win.
TOP PERFORMERS: Reese Dixon-Waters is shooting 35.9% from beyond the arc with 1.6 made 3-pointers per game for the Aztecs, while averaging 13 points. Byrd is averaging 10.2 points and 5.1 rebounds over the past 10 games.
Dra Gibbs-Lawhorn is shooting 50.9% and averaging 20.6 points for the Rebels. Hamilton is averaging 1.4 made 3-pointers over the last 10 games.
LAST 10 GAMES: Aztecs: 5-5, averaging 74.9 points, 28.9 rebounds, 13.7 assists, 6.9 steals and 4.2 blocks per game while shooting 46.4% from the field. Their opponents have averaged 69.0 points per game.
Rebels: 6-4, averaging 84.1 points, 32.3 rebounds, 14.7 assists, 6.4 steals and 4.8 blocks per game while shooting 50.0% from the field. Their opponents have averaged 80.8 points.
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The Associated Press created this story using technology provided by Data Skrive and data from Sportradar.
SAN DIEGO (CNS) – Military bases in San Diego County and nationwide have increased security measures due to last weekend’s U.S.-Israeli attacks on Iran, prompting traffic delays near base entrances, enhanced ID checks and access restrictions.
The Naval Air Station North Island on Coronado ports three aircraft carriers, including the San Diego-based USS Abraham Lincoln, which led some of the first-wave attacks on Saturday.
Naval Base Coronado warned motorists of possible traffic delays at all base entry points due to the increased security measures.
Targets included Islamic Revolutionary Guard Corps command and control facilities, Iranian air defense capabilities, missile and drone launch sites and military airfields.
The U.S. operation, dubbed “Epic Fury,” and Israeli operation, “Raging Lion,” began striking targets at 1:15 a.m. Eastern Time Saturday.
As of Tuesday, at least six U.S. service members had been killed in action.
The strikes also killed Iranian Supreme Leader Ali Hosseini Khamenei, who had been Iran’s supreme leader since 1989, making him the longest-serving head of state in the Middle East.
Iran’s offensive forces claimed to have struck USS Abraham Lincoln with ballistic missiles, but according to an X post from U.S central Command, “The Lincoln was not hit. The missiles launched didn’t even come close. The Lincoln continues to launch aircraft in support of CENTCOM’s relentless campaign to defend the American people by eliminating threats from the Iranian regime.”
Those with concerns regarding the heightened security can contact San Diego County’s Office of Emergency Services at 858-565-3490 or oes@sdcounty.ca.gov.
Copyright 2026, City News Service, Inc.
SAN DIEGO (KGTV) — Less than 3 weeks after the San Diego Unified School District finalized a new contract with teachers, the school board voted unanimously on Tuesday to move forward with layoff notices for other district employees.
The layoffs affect classified employees — workers who are employed by the district but are not teachers and are not certified. That includes bus drivers, custodians, special education and teacher aides, and cafeteria workers.
The district says it is eliminating 221 positions — 133 that are currently filled and 88 that are vacant — to save $19 million and help address a projected $47 million deficit for the next fiscal year.
Preliminary layoff notices will go out on March 15, with final notices by May 15.
The district estimates about 200 classified employees will receive preliminary notices, but of them, about 70 are expected to lose their jobs based on union-negotiated bumping rules.
Bumping allows employees with more seniority to move into another position in the same classification, thereby “bumping” a less senior employee out of that role.
Lupe Murray, an early childhood special education parafacilitator with the district, said the news came as a shock after the teacher strike was called off.
“When the strike was called off, I’m like, ‘Yes!’ So then when I got the email from the Superintendent, I’m like, ‘Wait, what?’ So, I think everyone was shocked,” Murray said.
The district says it sends out annual layoff notices, as all districts in the state do.
Before Tuesday’s board meeting, classified employees rallied outside, made up of CSEA (California School Employees Association) Chapters OTBS 788, Paraeducators 759, and OSS 724. They were joined by parents, students, and the San Diego & Imperial Counties Labor Council, AFL-CIO.
Miguel Arellano, a paraeducator independence facilitator with San Diego Unified and a representative of San Diego Paraeducators Cahpter 759.
“What do we want? No layoffs! When do we want it? Now!” the crowd chanted.
Arellano said he felt compelled to act when he learned about the potential layoffs.
“The first thing that went through my mind was that I need to speak up. I need to protect these people,” Arellano said.
Inside the meeting, the board heard emotional, at times tearful testimony from classified employees before voting unanimously to move forward with the layoff schedule.
Superintendent Fabi Bagula said the district has tried to protect classrooms from the cuts.
“We have tried our best to only, I mean, to not touch the school. Or the classroom. But now it’s at the point where it’s getting a little bit harder,” Bagula said. “What I’m still hoping, or what I’m still working toward, because we’re still in negotiations, is that we’re able to actually come to a win-win, where there’s positions and availability and maybe even promotions for folks that are impacted.”
Arellano warned the layoffs could have a direct impact on students.
“We are already spread thin, so, with more of a case load, it’s going to be impossible to be able to service all the students that we need to have,” Arellano said.
Follow ABC 10News Anchor Max Goldwasser on Instagram, Facebook, and Twitter.
This story was reported on-air by a journalist and has been converted to this platform with the assistance of AI. Our editorial team verifies all reporting on all platforms for fairness and accuracy.
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