Health
Nutrient deficiency linked to heart disease risk for millions, new study warns
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More than three-quarters of the global population is falling short on omega-3 intake, a nutrient gap that may increase the risk of heart disease, cognitive decline, inflammation and vision problems.
That’s according to an analysis published in Nutrition Research Reviews, in which researchers from the University of East Anglia, the University of Southampton and Holland & Barrett analyzed omega-3 intake patterns across multiple countries and age groups.
The review found that 76% of people worldwide are not meeting the recommended levels of two omega-3 fats that are essential for heart health: eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA).
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The analysis considered recommendations from global health authorities and assessed how closely populations follow them.
Most adults should aim for at least 250 milligrams of EPA and DHA per day, though actual intake is far lower in many regions, according to the researchers.
A new study found that 76% of people fall short of their recommended omega-3 intake. (iStock)
To explore the health implications of low omega-3 intake, Fox News Digital spoke with Michelle Routhenstein, a New York–based preventive cardiology dietitian at Entirely Nourished.
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Low omega-3 levels can have a noticeable impact on heart health, cognitive function and inflammation throughout the body, the expert confirmed.
Low intake can also increase the risk of heart attacks and sudden cardiac death, she added. It’s also associated with higher triglycerides, irregular heart rhythms and plaque in the arteries.
Most adults should aim for at least 250 milligrams of EPA and DHA per day, researchers say. (iStock)
Inadequate omega-3 levels have also been linked to changes in brain function, including faster cognitive decline, a higher risk of Alzheimer’s disease and increased rates of depression.
Routhenstein noted that low levels may also worsen inflammation in autoimmune conditions such as psoriasis, and can negatively affect eye health, since omega-3s play a key structural role in the retina.
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To improve omega-3 levels, the expert said it’s important to understand how much is needed and where to get it.
“The richest dietary sources of EPA and DHA are oily fish, such as salmon, mackerel, sardines, herring, trout and anchovies,” Routhenstein told Fox News Digital.
Oily fish, such as salmon, are among the richest natural sources of omega-3s. (iStock)
Many people benefit from eating oily fish more frequently, often three to four times per week, Routhenstein noted. For individuals who do not eat fish regularly, supplements can help raise EPA and DHA to healthier levels.
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For those taking omega-3 supplements, dosing should be based on lab results, medications, omega-3 levels and overall medical history, according to Routhenstein. Moderate, quality-controlled supplements are generally considered safe for most people.
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There is also some evidence supporting prescription-strength omega-3 products.
“High-dose EPA, such as 4 grams per day of icosapent ethyl, has been shown to reduce major cardiovascular events in certain high-risk populations, while similar doses of mixed EPA/DHA have not consistently shown the same benefit,” Routhenstein said.
Omega-3 dosing should be individualized based on lab data, medication use, current levels and overall medical history. (iStock)
Testing omega-3 levels can also help determine whether intake is adequate. The omega-3 index, a blood test that measures EPA and DHA in red blood cells, is considered one of the most reliable ways to assess status.
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“Levels around 8% are associated with lower cardiovascular risk, while levels below approximately 4% are considered low,” Routhenstein said.
Understanding baseline levels can help guide more personalized decisions about diet and supplementation.
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Those who are unsure about their omega-3 status or whether supplementation is appropriate should speak with a healthcare provider to determine the best approach.
Health
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Health
Doctors reveal what ‘reasonable’ drinking looks like — and who should avoid alcohol
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With 40% of adults resolving to drink less alcohol in 2026, according to a recent survey, some may be struggling to find a healthy balance.
Health experts agree that each person’s relationship with alcohol is unique, based on history, tolerance and lifestyle.
Dr. Ezekiel Emanuel, a Pennsylvania-based oncologist and author of the new book “Eat Your Ice Cream: Six Simple Rules for a Long and Healthy Life,” has noted that indulging in certain activities – like eating ice cream or drinking alcohol – may not be healthy to do every day, but can provide some benefits in moderation.
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“There has been a lot of research on alcohol,” he said in a recent interview with “CBS Sunday Morning.” “The safest level is probably zero. There are some studies … where it’s half a cup a day, three cups a week.”
“On the other hand, 60% [to] 65% of the public drinks,” he went on. “You’re not going from 65% to zero, so you have to give people reasonable advice.”
A doctor shared “reasonable” drinking advice for striking a balanced relationship with alcohol. (iStock)
Emanuel advised against binge-drinking or drinking alone, both of which are “really bad for you.”
“[But] if you’re using alcohol as a lubricant for social interaction, which many people do, that’s probably good,” he said. “You’re getting some benefit from the social interaction.”
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When social drinking becomes risky
While drinking’s stress-relieving factors may be helpful for some, indulging in alcoholic drinks can be risky for those with a pre-disposition to addiction, experts caution.
In a recent episode of “The Huberman Lab” podcast, Dr. Andrew Huberman and guest Dr. Keith Humphreys, professor of psychiatry and behavioral sciences at Stanford School of Medicine, discussed the fine line between indulging for pleasure and potentially fostering an issue.
Experiences with alcohol can be different for every individual, experts say. (iStock)
According to Huberman, who is also a Stanford University neuroscientist, up to 10% of people experience alcohol as a “dopaminergic,” making them feel “spectacularly good.”
Others may drink and experience a cue to stop, like dizziness, nausea, “blacking out,” severe hangovers or other negative effects.
“The safest level is probably zero.”
“Some people really can drink five or six drinks, and then the next day they’re at work hammering away,” he said. “The conversation becomes very difficult to have, because it sounds like it’s highly individual how people will react.”
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High-risk groups
One of the greatest risk factors for becoming an alcoholic is having your first drink before the age of 14, according to Huberman.
“I find that some people will have their first drink, and it’s like a magic elixir for their physiology,” he said. “And there are very few things that can get somebody like that to stop drinking, except the risk of losing everything.”
While drinking’s stress-relieving factors may be helpful for some, indulging in alcoholic drinks can be risky for those with a pre-disposition to addiction, experts caution. (iStock)
Humphreys said the biggest indicator of personal risk is whether alcoholism runs in someone’s family — particularly if their parents were alcoholics.
“The father-to-son link is the strongest one you see in genetics,” he said. “Men drink more than women do … whether they’ve got an alcohol problem or not.”
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Drinking alcohol has been shown to be particularly harmful for women, as the risk of developing hormone-related cancers substantially increases.
Risk vs. benefit
For those who are not predisposed to addiction, Huberman noted that some studies suggest that certain types of consumption are OK in moderation, such as drinking red wine or having a maximum of two drinks per week.
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“I would love to believe [red wine] is healthy,” Humphreys responded. “It’s not … Why would there be a benefit to red wine that wasn’t in other alcoholic beverages?”
“There might be some cardiac benefits, but we don’t get to live our lives as single organs. We have a whole body,” he went on. “If that’s true, it’s smaller than the cancer risk. So, your net is you’re not going to get any mortality reduction from drinking alcohol.”
“I would love to believe [red wine] is healthy,” one expert said. “It’s not … Why would there be a benefit to red wine that wasn’t in other alcoholic beverages?” (iStock)
Drinking two drinks per week — such as a 12-ounce beer, 4-ounce glass of wine or a 1-ounce shot of liquor — poses only a “very small risk” of health complications, but it’s not something Humphreys would recommend, as it’s “just not good for you,” he said.
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Despite the risks, however, the experts acknowledged the stress-relieving and social benefits of having a drink.
“Getting together with friends is enjoyable, enriching,” Humphreys said. “Good food and good wine taste good, and I value those things. And there are many other decisions we make like that where we endure some risk because we care about something else.”
“It’s dangerous for someone my age to hike up a mountainside probably, but if the view is spectacular, I can say, ‘Oh, I’m going to accept that risk.’”
“Good food and good wine taste good, and I value those things.”
What’s become most dangerous about social drinking, according to Humphreys, is that some people feel they need to explain themselves when they stop.
Huberman echoed, “If you don’t drink at parties, or you refuse an offer of alcohol, people think there’s something wrong with you.”
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Given recent data on the risks of alcohol consumption, Humphreys said it should be simple to say no, much like opting not to smoke a cigarette.
“Health is a reason people still accept, I think, as a legitimate [reason] for changing behavior,” he added.
Health
Early peanut exposure in babies tied to sharp drop in food allergy diagnoses
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Historically, parents were advised to avoid feeding peanuts to babies for the first few years of life, but emerging research has confirmed that introducing them sooner — as early as infancy — could help stave off food allergies.
A 2025 study led by the Children’s Hospital of Philadelphia analyzed medical records from dozens of pediatric practices across the U.S., finding that early introduction of peanuts resulted in a 27% decrease in peanut allergy diagnoses among children and a 38% decrease in overall food allergies.
The latest research also found that eggs had surpassed peanuts as the most common food allergen in the children studied. Beyond peanuts, other common food allergens include milk, egg and wheat.
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The new research — published in Pediatrics, the journal of the American Academy of Pediatrics, in October 2025 — focused on a two-year period after new guidance was issued by the National Institute of Allergy and Infectious Diseases, which first advised parents to introduce peanuts earlier.
Emerging research has confirmed that introducing peanuts as early as infancy could help stave off food allergies. (iStock)
That updated guidance was based on a landmark 2015 study — the Learning Early About Peanut Allergy (LEAP) trial — which found that for infants who had severe eczema or an egg allergy, exposing them to peanuts when they were between 4 and 11 months old could reduce peanut allergy risk by 81%.
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The guidelines were updated again in 2021, encouraging the introduction of peanut, egg and other major food allergens as early as 4 to 6 months for all children — including those without a history of prior reaction, according to health experts.
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“Everyone has been wondering whether these landmark public health interventions have had an impact on reducing rates of IgE-mediated food allergies in the United States,” said first author Stanislaw Gabryszewski, M.D., Ph.D., an attending physician in the Division of Allergy and Immunology at the Children’s Hospital of Philadelphia, in a statement.
A 2025 study led by the Children’s Hospital of Philadelphia found that early introduction of peanuts resulted in a 27% decrease in peanut allergy diagnoses among children and a 38% decrease in overall food allergies. (iStock)
“We now have data that suggest the effect of this landmark public health intervention is occurring.”
The latest findings “are supportive of efforts to increase education and advocacy related to early food introduction practices,” the study authors wrote.
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“If confirmed, these findings would represent a meaningful public health advance — affirming that clinical research, when coupled with clear guidelines and committed dissemination, can indeed shift the trajectory of childhood food allergy.”
Study limitations
The study only included data through early 2019 and did not consider the guidance released in 2021, which recommended early introduction of multiple allergens regardless of risk, the researchers acknowledged.
It also relied on allergy diagnoses from electronic health records, which may miss some cases. Also, the researchers did not capture individual feeding patterns.
Parents are encouraged to discuss any concerns with their pediatrician before introducing potential food allergens. (iStock)
Because the study was observational, it cannot prove cause and effect, but only association, the researchers noted. Other factors may influence the outcome.
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In some children, peanut allergy can trigger severe, life-threatening reactions, including difficulty breathing, swelling of the throat and a dangerous drop in blood pressure, according to Mayo Clinic. These reactions require immediate treatment with epinephrine, a life-saving allergy medication.
Not all parents may be comfortable with these revised guidelines, health experts say.
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“Not everyone has followed those guidelines, but this is further evidence that this early introduction is effective at preventing food allergies,” Dr. Susan Schuval, chief of the Division of Pediatric Allergy and Immunology at Stony Brook Children’s Hospital in New York, previously told Fox News Digital.
Parents are encouraged to discuss any concerns with their pediatrician before introducing potential food allergens.
Amy McGorry contributed reporting.
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