Health
How to Boil an Egg? Scientists Claim to Have Cracked the Recipe.
A colleague approached Ernesto Di Maio, a materials scientist in Naples, Italy, and an expert in plastic foams, with a blunt suggestion: “You should do something cooler.” The colleague had a project in mind, Dr. Di Maio recalled. He wanted a perfectly boiled egg.
The task was harder than it might seem, as many home cooks know. The yolk and the egg white, or albumen, have different chemical compositions, which call for different heating temperatures. Dr. Di Maio and his colleagues also welcomed the chance to one-up the Michelin-star chef Carlo Cracco, an egg evangelist who charges $52 for an egg yolk dish at his restaurant in Milan.
The scientists devised a way of cooking an egg that requires no special culinary skill or fancy gadgets. It took about 300 eggs, though the researchers “didn’t eat all of them,” said Pellegrino Musto, a polymer expert at the National Research Council of Italy.
The researchers said their method, published on Thursday, preserves the distinct textures of the egg as well as its nutritional value.
The two parts of the egg require different cooking temperatures because they have different chemical components. “The albumen is mainly composed of water and proteins,” said Emilia Di Lorenzo, a graduate student in Dr. Di Maio’s lab at the University of Naples Federico II who recently published a paper on foaming pizza. “Yolk, on the other hand, is much richer in nutrients.”
Hard-boiling an egg is a popular approach that calls for at least 10 minutes of immersion in boiling water. That is long enough for the yolk to be thoroughly cooked. But it’s also plenty of time for the albumen’s proteins to unfold and clump, expelling water molecules as they become heated. The approach can also create a green ring around the yolk, which indicates the presence of smelly ferrous sulfide.
“Many times people say that they don’t like the rubberiness of the egg white, or the graininess of the yolk in a hard-boiled egg,” said Nelson Serrano-Bahri, a chef and the director of innovation at the American Egg Board, the egg industry’s main trade association, which has lately been dealing with soaring prices and worries about the bird flu.
A soft boil, on the other hand, needs a much shorter cooking period. That keeps the albumen from turning hard — but may also keep the yolk too soft. Ms. Di Lorenzo explained that the yolk is rich in lipids which, when heated, become more fluid. Though some people prefer a runny yolk, others find it revolting.
A third method, known as sous vide, cooks an egg for an hour in a water bath of 150 degrees Fahrenheit. That’s the ideal temperature for the yolk, but the prolonged exposure is less optimal for the albumen because the water is not hot enough to denature its proteins.
Ms. Di Lorenzo was blunt about the sous vide approach: “It’s runny. I am not a big fan.”
The scientists’ new method, derived with the help of fluid dynamics software, calls for alternating between boiling and lukewarm water: The egg gets two minutes in 212-degree water, followed by two minutes at 86 degrees, with the cycle repeated eight times. Dr. Di Maio explained that the average temperature of the two immersions, 150 degrees, is ideal for the yolk, while the hotter bath is sufficient to cook the albumen.
“The very key of our method is to have a well-cooked albumen without wasting the yolk,” Dr. Di Maio said.
Relative to the other methods, the periodic baths did a better job of preserving the egg’s nutrients, the study found. The authors noted a higher concentration of polyphenols, compounds that protect against DNA damage.
“It’s probably brilliant — but who is the method for?” asked Deb Perelman, who runs the popular Smitten Kitchen blog. “For home cooking, there’s always a necessary balance of perfect versus a reasonable effort.”
Her preferred foolproof method involves a long ice bath after the egg is cooked. In a recipe for The New York Times, J. Kenji López-Alt proposed steaming the egg in a single inch of water.
“It’s a matter of taste,” Ms. Di Lorenzo said. If science is universal, food is deeply personal. Some people even eat raw eggs.
There is one big drawback to the new Italian technique. “It’s more difficult to peel the periodic egg because everything is softer,” Dr. Di Maio said.
But Mr. Serrano-Bahri said that the Egg Board was on the case. “We are running a study to figure out that,” he said. “I could have an answer for you in the coming months.”
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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.
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As winter weather moves in, cozy essentials like scarves, plush throws and heated bedding become everyday comforts.
But dermatologists caution that these cold-weather favorites can secretly undermine skin health — trapping sweat and bacteria, causing irritation and exposing the skin to excess heat.
Choosing the right materials for wellness — and using them safely — can make a big difference.
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Here are five winter must-haves and gift ideas, with expert tips on how to keep skin healthy and happy while staying warm this season.
Soft scarf, $19.99, Amazon.com
Scarves made of natural fiber, like this one that is 100% cotton, may help if you’re prone to irritation. (Amazon)
A soft scarf is a staple for cold days and an easy way to elevate a winter outfit.
Yet, if breakouts are appearing along the neck, jawline or chest, that favorite accessory may be part of the problem.
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“You should wash your scarf as often as your clothes to prevent breakouts,” Annabelle Taurua, a beauty expert at Fresha, a beauty and wellness booking platform headquartered in London, told Fox News Digital.
Cotton is a better choice than polyester, she also noted, as it’s more breathable and allows sweat to evaporate.
Fluffy blankets, $28.97, Potterybarn.com
Fluffy blankets make for perfect cozy days at home, but their soft fibers can trap sweat, oils and dead skin — which can clog pores and encourage bacteria growth. (Pottery Barn)
Fluffy blankets make for perfect cozy days at home, but their soft fibers can trap sweat, oils and dead skin, which can clog pores and encourage bacteria growth.
Rough textures or infrequent washing can also irritate sensitive skin and worsen breakouts.
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“Regularly wash your blankets, especially those made from synthetic or fluffy materials, to remove built-up oils and dirt,” Taurua advised.
She recommended breathable materials like cotton or linen, as well as hypoallergenic options for anyone prone to irritation.
Good set of sheets, $49.99, Amazon.com
Much like scarves, natural fibers are the way to go for your linens to avoid irritation. (iStock)
Cold weather makes lingering in bed especially tempting, but lying on unwashed bedding can worsen acne.
Pillowcases and sheets quickly collect oil, bacteria and dead skin cells, which transfer directly onto the face.
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“Washing bedding frequently is important,” Taurua said. “You should aim to change and wash your pillowcases every two to three days and your sheets at least once a week.”
Heated blanket, $33.99, Walmart.com
Heated blankets are a great way to stay warm during the winter. (Walmart)
When using a heated blanket, start with the lowest heat setting and limit use, said Taurua.
“Once you’re warm, switch to a regular blanket,” she advised.
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She also said it’s best to avoid direct contact for long periods to reduce irritation.
Hot water bottle, $12.99, Amazon.com
A traditional winter staple, hot water bottles offer quick comfort — but they come with risks similar to heated blankets, including burns, scalding and long-term heat-related skin damage.
Hot water bottles should never be filled with boiling water, experts advise. (Amazon)
“Never fill a hot water bottle with boiling water,” Taurua said.
“Only use hot, not boiling, water, and fill it to a maximum of two-thirds.”
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She recommended wrapping the bottle in a towel or cover to avoid direct skin contact and limiting use to around 20 minutes.
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