Health
Eating oatmeal for two days has unexpected impact on heart health, study suggests
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Eating oats for just a short period of time could have a profound impact on cholesterol levels, according to a recent study.
Researchers from the University of Bonn in Germany conducted a trial in which adults consumed a calorie-reduced diet of almost exclusively oatmeal for two days.
All participants suffered from a metabolic syndrome associated with a risk of diabetes, including a combination of high body weight, high blood pressure, elevated blood glucose or elevated blood lipid levels, according to a university press release.
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The 32 participants ate oatmeal, previously boiled in water, three times a day, for a total of 300 grams. They were only permitted to add fruits or vegetables to their meals and consumed around half of their normal caloric intake.
A control group was put on a calorie-reduced diet that did not include oats. Although both groups benefited, the cholesterol levels of those on the oat diet “improved significantly.” After six weeks, this effect “remained stable.”
A new study found that eating oats for two days reduced bad cholesterol. (iStock)
Study author Marie-Christine Simon, junior professor at the Institute of Nutritional and Food Science at the University of Bonn, shared in a statement that the level of LDL, or “bad” cholesterol, among the oatmeal-eating group was reduced by 10%.
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“That is a substantial reduction, although not entirely comparable to the effect of modern medications,” Simon said. “They also lost two kilos in weight on average, and their blood pressure fell slightly.”
The authors concluded that the diet influenced microorganisms in the gut, leading to the positive reaction. The results were published in the journal Nature Communications.
Oats significantly reduced cholesterol levels, although not as much as modern medicine. (iStock)
Simon concluded that a short-term oat-based diet at regular intervals “could be a well-tolerated way to keep the cholesterol level within the normal range and prevent diabetes.”
“As a next step, it can now be clarified whether an intensive oat-based diet repeated every six weeks actually has a permanently preventative effect,” she said.
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Certified holistic nutritionist Robin DeCicco, who was not involved in the study, said the findings “make sense” because oats have been known to potentially lower LDL cholesterol.
Oats contain prebiotic fiber that feeds beneficial gut bacteria. When those bacteria ferment the fiber, they produce compounds that support digestive health, according to the expert.
“The more beneficial gut bacteria you have in your stomach, in your environment, the more that can reduce or inhibit the production of LDL bad cholesterol,” New York-based DeCicco told Fox News Digital.
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Oats are also a whole grain that is naturally low in saturated fat and rich in fiber and provides a good amount of plant-based protein.
“All those things are good for a heart-healthy, cholesterol-lowering diet,” DeCicco noted.
Oats are a whole grain that is naturally low in saturated fat and rich in fiber and provides a good amount of plant-based protein, all of which are good for heart health. (iStock)
DeCicco did warn that those who are diabetic or prediabetic should “be careful” when eating oats.
“While oats can lower cholesterol, they are an overly high-carbohydrate food,” she said. “A recommendation for anyone who’s watching their blood sugar, and especially who’s diabetic, is to eat foods that are lower in starch and higher in protein and fiber, [and to get] their carbohydrates more from vegetables and nuts.”
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Megan Wroe, registered dietitian at the Wellness Center at Providence St. Jude Medical Center in Orange County, California, agreed that oat consumption “does seem to lower cholesterol levels for all studied populations, with the greatest impact shown in those with elevated levels.”
“There are no significant risks, but some people may experience cramping or indigestion if they have not previously eaten much fiber and suddenly start eating oats every day,” Wroe, who also was not involved in the study, told Fox News Digital. “Also, those requiring a gluten-free diet will want to ensure that the oats they eat are certified gluten-free.”
The nutritionist also shared the concern that oatmeal is commonly made with water or milk and eaten with added sugar and fruit, which makes it a “potentially very high-glycemic meal.”
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“Knowing this, my recommendation is to eat oats as often as you like, choosing steel-cut or rolled oats, using fruit for sweetness or a low-glycemic sweetener if needed, such as monk fruit,” she advised.
Wroe also suggests finding a way to add protein to balance out the carbohydrates.
“This can be done by adding chia or flax seeds to the oats, mixing in protein powder or topping with Greek yogurt to serve,” she said.
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Feeling lonely may take a toll on older adults’ memory — but it may not speed up cognitive decline, according to a new study.
Researchers from Colombia, Spain and Sweden analyzed data from more than 10,000 adults ages 65 to 94 across 12 European countries and found those who reported higher levels of loneliness did worse on memory tests at the start of the study, according to research published this month in the journal Aging & Mental Health.
Over a seven-year period, however, memory decline occurred at a similar rate regardless of how lonely participants felt.
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“The finding that loneliness significantly impacted memory, but not the speed of decline in memory over time was a surprising outcome,” lead author Dr. Luis Carlos Venegas-Sanabria of the School of Medicine and Health Sciences at the Universidad del Rosario said in a statement.
Loneliness may be linked to memory performance in older adults, a new study suggests. (iStock)
“It suggests that loneliness may play a more prominent role in the initial state of memory than in its progressive decline,” Venegas-Sanabria said, adding that the findings highlight the importance of addressing loneliness as a factor in cognitive performance.
The findings add to debate about whether loneliness contributes to dementia risk. While loneliness and social isolation are often considered risk factors for cognitive decline, research results have been mixed.
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The study looked at data from the long-running Survey of Health, Ageing and Retirement in Europe (SHARE), which tracked 10,217 older adults between 2012 and 2019. Participants were asked to recall words immediately and after a delay to measure memory performance.
Social isolation and loneliness could play a surprising role in cognitive health among seniors. (iStock)
Loneliness was assessed using three questions about how often participants felt isolated, left out or lacking companionship.
About 8% of participants reported high levels of loneliness at the outset. That group tended to be older, more likely to be female and more likely to have conditions such as depression.
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Researchers found that those with higher loneliness had lower scores on both immediate and delayed memory tests at baseline. Still, all groups — regardless of loneliness level — experienced similar declines in memory over time.
The results suggest loneliness may not directly accelerate the progression of memory loss, though it remains linked to poorer cognitive performance overall.
Researchers look at a brain scan at the National Institutes of Health in Bethesda, Maryland. (Saul Loeb/AFP/Getty Images)
Experts warn, however, that the findings should not be interpreted to mean loneliness is harmless.
“The finding that lonely older adults start with worse memory but don’t decline faster is actually the most interesting part of the paper, and I think it’s easy to misread,” said Jordan Weiss, Ph.D., a scientific advisor and aging expert at Assisted Living Magazine and a professor at NYU Grossman School of Medicine.
“It likely means loneliness does its damage earlier in life, well before people show up in a study like this at 65-plus,” Weiss told Fox News Digital.
By older age, long-term social patterns may already be established, making it harder to detect when the effects of loneliness first took hold, an aging expert says. (iStock)
He suggested that by older age, long-term social patterns may already be established, making it harder to detect when the effects of loneliness first took hold.
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“By the time you’re measuring someone in their late 60s, decades of social connection patterns are already baked in,” he said.
Weiss, who was not involved in the research, added that loneliness may coincide with other health conditions, and noted that participants who felt more isolated also had higher rates of depression, high-blood pressure and diabetes. The link, he said, may reflect a cluster of health risks rather than a direct cause.
“While they can go hand-in-hand, it’s not clear that loneliness contributes to dementia,” a psychotherapist says. (iStock)
Amy Morin, a Florida-based psychotherapist and author, said the findings reflect a broader pattern in research on loneliness and brain health, and that the relationship may be more complex than it appears.
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“The evidence shows there’s a link between loneliness and cognitive decline but there’s no direct evidence of a cause and effect relationship,” she said. “So while they can go hand-in-hand, it’s not clear that loneliness contributes to dementia.”
Morin added that loneliness, which can fluctuate, may not be the root of the problem, but rather a symptom of other underlying mental or physical health issues.
Researchers suggested screening for loneliness be incorporated into routine cognitive assessments as one way to support healthy aging. (iStock)
She said staying socially and mentally engaged is crucial for overall brain health.
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“It’s important to be proactive about social activities,” Morin said. “Joining a book club, having coffee with a friend, or attending faith-based services can be a powerful way to maintain connections in older age.”
The researchers also suggested screening for loneliness be incorporated into routine cognitive assessments as one way to support healthy aging.
Fox News Digital reached out to the researchers for comment.
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Research continues to uncover new details on how fasting may help extend life.
A new study published in the journal Nature Communications investigated how intermittent fasting can boost longevity in small worms often used in aging research.
Researchers from the University of Texas Southwestern Medical Center in Dallas compared worms that were fed normally to those that underwent a 24-hour fast in early adulthood and were then fed again, according to a press release.
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The scientists measured a variety of factors, including stored fat, gene activity related to fat metabolism and lifespan.
The results showed that the life-boosting benefit did not depend on the fasting itself but on the body’s behavior after eating again.
Experts say sustainability is key when choosing a long-term weight-loss strategy. (iStock)
Study lead Peter Douglas, associate professor of molecular biology and a member of the Hamon Center for Regenerative Science and Medicine at UT Southwestern, suggested that these discoveries “shift the focus toward a neglected side of the metabolic coin – the re-feeding phase.”
“Our data suggest that the health-promoting effects of intermittent fasting are not merely a product of the fast itself, but are dependent on how the metabolic machinery recalibrates during the subsequent transition back to a fed state,” he said.
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“Our findings bridge a gap between lipid metabolism and aging research,” he added. “By targeting aging, the single greatest risk factor for human disease, we move beyond treating isolated conditions toward a preventive model of medicine that enhances quality of life for all individuals.”
Lauri Wright, director of nutrition programs at the University of South Florida’s College of Public Health, called this a “high-quality” study that adds an “important nuance to how we think about fasting and longevity.”
Intermittent fasting typically involves limiting meals to an eight-hour daily window or fasting every other day. (iStock)
The benefits of the refeeding phase after fasting were “especially interesting,” Wright, who was not involved in the study, told Fox News Digital.
“The researchers showed that longevity was linked to the body’s ability to turn off fat breakdown after fasting, allowing cells to restore energy balance,” she reiterated.
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“From a scientific standpoint, that’s a meaningful shift because it suggests fasting is not just about burning fat, but about metabolic flexibility.”
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Fasting may support longevity through triggering metabolic switching, enhancing cellular repair and stress resistance and improving markers like insulin sensitivity, research shows.
Limitations and cautions
Although this study provides “important insight” on the power of refeeding, Wright noted that the findings should be approached with caution, as the study was done on worms and cannot always be translated to humans.
“Additionally, it explains how a process might work in a controlled lab condition rather than real-world eating behaviors,” she added as a limitation. “Finally, the study is short-term and doesn’t give us the long-term translation on lifespan outcomes.”
The review found intermittent fasting was barely more effective than doing nothing, according to the study authors. (iStock)
Wright cautioned that fasting is “not a magic solution for longevity, and how you eat overall matters more than when you eat.”
“I advise, first and foremost, to focus on diet quality, including a variety of fruits and vegetables, healthy fats and minimally processed foods,” she said.
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For those who are considering fasting, it’s better to stick with a moderate plan — like a 12- to 14-hour overnight fast — rather than going to extremes, Wright said. After fasting, she recommends focusing on well-balanced meals.
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Several groups of people should be cautioned against fasting, according to Wright, including those with diabetes who are on insulin or hypoglycemic medications, those who are pregnant or breastfeeding, anyone with a history of eating disorders and older adults at risk of malnutrition.
Anyone considering intermittent fasting should consult with a doctor before starting.
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