Health
How much red meat is too much? Experts weigh in on food pyramid updates
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The release of an updated food pyramid this week has sparked mixed reactions from doctors and dietitians.
One of the most noteworthy shifts in the 2025-2030 Dietary Guidelines for Americans — announced by HHS officials during a Jan. 7 press conference at the White House — is a greater emphasis on “high-quality proteins,” including red meat and eggs, as well as full-fat dairy.
The new guidelines focus on “real, whole, nutrient-dense foods,” and a dramatic reduction in highly processed foods, added sugars, refined carbohydrates and unhealthy fats.
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“Protein and healthy fats are essential and were wrongly discouraged in prior dietary guidelines,” Health Secretary Robert F. Kennedy Jr. said during the press conference. “We are ending the war on saturated fats.”
Nick Norwitz, a Harvard- and Oxford-trained researcher known for his work in metabolic health, shared his reaction to the new guidelines.
The release of an updated food pyramid this week has sparked mixed reactions from doctors and dietitians. (realfood.gov)
Despite how the new pyramid is presented, he noted, the actual guidelines for saturated fat consumption haven’t changed, as they still state that, “in general, saturated fat consumption should not exceed 10% of total daily calories.”
The intake of unprocessed whole foods rich in saturated fat, especially dairy fat, tends to be associated with improved health outcomes, according to Norwitz.
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“Full-fat dairy — especially cheese, for example — tends to be associated with lower BMI, reduced rates of diabetes and even reduced dementia risk,” he told Fox News Digital. “There are, of course, nuances — but ‘ending the war’ on saturated fat seems reasonable.”
Risks vary, experts say
Experts cautioned about the potential health risks of exceeding the recommended intake of saturated fat, including higher rates of LDL “bad” cholesterol, which is known to increase the risk of cardiovascular disease.
“The recommendation to limit saturated fat to 10% of total calories is based on the research showing that higher rates increase LDL cholesterol and associated risks for cardiovascular disease,” Sherry Coleman Collins, a food allergy dietitian and expert from the Atlanta metropolitan area, told Fox News Digital.
One of the most noteworthy shifts in the 2025-2030 Dietary Guidelines for Americans is a greater emphasis on “high-quality proteins” — including red meat and eggs — as well as full-fat dairy. (iStock)
Nutrition should be personalized and is dependent on multiple factors, she said, including age, gender, activity level and genetic risk factors.
“The total saturated fat an individual might safely consume is influenced by their size and total calorie needs, as well as potentially genetic differences,” Coleman Collins said.
Norwitz agreed, adding that “the specific food source and interaction with the unique host and their broader dietary context should take the spotlight.”
Dr. Pooja Gidwani, a double board-certified doctor of internal medicine and obesity medicine in Los Angeles, pointed out that not everyone has the same “tolerance” for saturated fats.
“If increasing saturated fat leads to a meaningful rise in LDL cholesterol or ApoB (Apolipoprotein B, a protein found on the surface of certain cholesterol-carrying particles in the blood), that intake level is excessive for that individual, regardless of improvements in weight or glucose metrics,” she said.
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“This personalized approach becomes increasingly important in midlife and beyond, when cardiovascular disease becomes the dominant driver of morbidity and mortality and when tolerance for cumulative atherogenic (artery-clogging) exposure is lower.”
For those who need to reduce LDL cholesterol or have a higher cardiovascular risk, the American Heart Association recommends an even lower amount of saturated fats — less than 6% of total daily calories.
Experts cautioned about the potential health risks of exceeding the recommended intake of saturated fat, including higher rates of LDL “bad” cholesterol. (iStock)
Gidwani also cautioned that diets emphasizing saturated fat could crowd out fiber and unsaturated fats, “both of which play independent roles in cholesterol clearance, insulin sensitivity, gut health and inflammation.”
“Saturated fat-heavy patterns are also calorie-dense, which can quietly undermine long-term weight management if intake is not carefully regulated,” she added.
Not all saturated fats are equal, experts say
The effects of saturated fat depend on what specific foods are being consumed, according to experts.
“I would recommend choosing minimally processed or unprocessed forms of foods,” said Tanya Freirich, a registered dietitian nutritionist in Charlotte, North Carolina. “For example, in place of a hot dog — which has additives, nitrites, sodium and fillers — consuming a chicken thigh would be a much better choice.”
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Gidwani reiterated that the amount of processing plays a big role.
“Processed meats are consistently associated with worse cardiometabolic outcomes and represent the clearest category to limit,” she said. “The risk here is not only saturated fat, but also sodium load, preservatives and the broader dietary pattern they tend to accompany.”
“Full-fat dairy — especially cheese, for example — tends to be associated with lower BMI, reduced rates of diabetes and even reduced dementia risk,” an expert told Fox News Digital. (iStock)
Unprocessed red meat, the doctor said, can fit into an overall healthy diet in smaller amounts, particularly when consumed alongside fiber-rich plants and minimally processed foods.
“However, from a longevity perspective, it should be viewed as optional rather than foundational, especially for individuals with elevated cardiovascular risk,” she added.
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When it comes to dairy, Gidwani noted that fermented options are “metabolically more favorable” than butter or cream.
“However, saturated fat from dairy is still not necessary to prioritize for metabolic health or longevity,” she said. “Excessive reliance on dairy fat can displace healthier fat sources without offering clear long-term benefit.”
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Overall, the doctor recommends unsaturated fat sources, including extra virgin olive oil, nuts, seeds, avocado and omega-3-rich fish, as primary dietary fats.
“These consistently support lipid profiles, insulin sensitivity and vascular health,” Gidwani said. “Saturated fat can exist within a balanced diet, but it should remain secondary rather than emphasized.”
Why the big picture matters
Saturated fat is just one piece of a much wider nutrition puzzle, the experts agreed.
Unprocessed red meat can fit into an overall healthy diet in smaller amounts, particularly when consumed alongside fiber-rich plants and minimally processed foods, one expert said. (iStock)
“Our heart health is not determined by one type of fat or one type of cholesterol, but the sum of many parts — our entire diet, our exercise habits, our stress and so much more,” Freirich said.
She recommends consulting a registered dietitian for guidance on unique dietary needs based on age, gender, activity level and medical history.
“Our heart health is not determined by one type of fat or one type of cholesterol, but the sum of many parts — our entire diet, our exercise habits, our stress and so much more,” said an expert. (iStock)
New Jersey-based dietitian Erin Palinski-Wade, author of “2-Day Diabetes Diet,” added that the message should be to focus more on overall patterns.
That means “plenty of fiber-rich plants, lean protein at every meal (including those that also contain fiber, such as nuts and seeds) and a reduction in overall intake of added sugars.”
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“That change will drive true health improvements,” she said.
Health
Common nighttime noise exposure may trigger heart problems, study suggests
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Living near heavy traffic could negatively impact your heart health.
A European study, published in the journal Environmental Research, found that exposure to nighttime road traffic noise is linked to changes in the blood, leading to worsened cholesterol and cardiovascular risks.
The researchers considered data from the U.K. Biobank, Rotterdam Study, and Northern Finland Birth Cohort 1966, including more than 272,000 adults over the age of 30, according to a press release.
Nighttime road noise exposure was estimated at all participants’ homes based on national noise maps. Researchers also took blood samples to measure the participants’ metabolic biomarkers for disease, then mapped the link between nightly noise levels and existence of biomarkers.
Exposure to loud noise was associated with increased concentrations of cholesterol-related biomarkers. (iStock)
The study found that people exposed to louder noise at night — especially sounds above 55 decibels — showed changes in 48 different substances in their blood. Twenty of these associations “remained robust” throughout all cohorts.
Exposure to loud noise was associated with increased concentrations of cholesterol-related biomarkers, especially LDL “bad” cholesterol, IDL (intermediate-density lipoprotein) and unsaturated fatty acids.
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As noise levels increased, starting at around 50 decibels, cholesterol markers rose steadily, the release stated.
The authors concluded that this study “provides evidence that nighttime road traffic noise exposure from 50 dB upward is associated with alterations in blood cholesterol and lipid profiles in adults.”
Researchers noted a link between traffic noise and cardiometabolic disease. (iStock)
Study co-author Yiyan He, doctoral researcher at the University of Oulu in Finland, noted that in this type of research, small effect sizes are expected, and environmental exposures such as traffic noise are “typically modest.”
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“Despite this, we observed statistically robust and consistent associations across many biomarkers, especially those related to LDL and IDL lipoproteins,” she told Fox News Digital.
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“We also identified a clear exposure-response pattern starting at around 50 dB, suggesting that metabolic changes become more evident as noise levels increase.”
This aligns with public health guidance, as the World Health Organization recommends lower nighttime noise limits at around 40 to 45 dB, Yiyan He added.
“This finding may clarify the association between traffic noise and cardiometabolic diseases,” the researchers wrote. (iStock)
“The 55 dB level is often used as an interim benchmark associated with substantial noise annoyance and sleep disturbance,” she said. “In our study, we observed associations not only at 55 dB, but also indications of effects emerging at around 50 dB.”
The strength and consistency of the cholesterol-related associations were surprising, as these changes are usually “subtle.”
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“Instead, we found consistent associations across multiple large European cohorts, which strengthens confidence that the findings may reflect real biological patterns,” Yiyan He went on. “We were also interested to see that effects were minimal below ~50 dB, suggesting a possible threshold-like pattern.”
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The researcher noted that these findings were consistent across genders, education levels and obesity status.
The study was restricted to White Europeans, which posed a limitation. There was also a lack of information on the fasting status in the UK Biobank.
Changes in cholesterol levels were more severe than researchers expected. (iStock)
“Fasting can influence levels of certain metabolites, particularly fatty acids,” Yiyan He said. “However, based on UK Biobank documentation, fewer than 10% of participants were fasting for at least eight hours, and our main findings focused on cholesterol-related biomarkers, which are generally less sensitive to short-term fasting.”
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The researchers also lacked information on bedroom location, indoor noise exposure and time spent at home.
“These factors may introduce non-differential exposure misclassification,” Yiyan He said. “Additionally, noise exposure estimates were based on participants’ temporary residential addresses at the time of blood sampling, without considering the duration of residence.”
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“Many of these limitations would tend to bias results toward the null, so the consistent associations we observed remain noteworthy.”
Experts recommend taking measures to limit traffic noise at night. (iStock)
Based on this latest research, Yiyan He noted that nighttime noise is a “health-relevant exposure,” not just “an annoyance.”
“Our findings suggest that nighttime traffic noise may subtly but consistently affect metabolic health,” she said. “While the changes in cholesterol and lipid levels for any one individual are small, traffic noise affects a very large number of people, which means the potential public health impact could be substantial.”
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The researcher recommends taking measures like improving sound insulation, using noise-reducing strategies and placing bedrooms on the quieter side of the home when possible.
“Because sleep is a key pathway linking noise to health, protecting the nighttime sleep environment is especially important,” she added.
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