Health
New surgical technology can ‘light up’ bacteria in wounds, helping to prevent infections
Up to 5% of people who have surgery can develop an infection — which can prolong healing and lead to dangerous complications, studies have shown.
Additionally, chronic wounds affect around 6.5 million patients in the U.S.
Some bacteria can’t be seen with the human eye, which means they may be missed by physicians when cleaning a wound.
Now, a new medical technology that uses fluorescent light has shown to be effective in detecting missed bacteria, according to new research led by University of Southern California, Los Angeles (USC).
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In a review of 26 medical studies, a handheld device using autofluorescence (AF) imaging successfully “lit up” bacteria in nine out of 10 wounds, with each different type of bacteria turning a different color, according to a press release from USC.
The findings were published recently in the medical journal Advances in Wound Care.
A new medical technology that uses fluorescent light has shown to be effective in detecting missed bacteria. (iStock)
Real-time detection
In traditional cases, surgeons take tissue samples from wounds and send them to a lab for testing to determine the types of bacteria that are present, the researchers noted.
It can take days to get the results, during which time infection can set in.
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“Bacteria can cause wounds to become infected when they enter and colonize the cut or wound,” Dr. Raj Dasgupta, pulmonary and critical care specialist at Huntington Health in Los Angeles, told Fox News Digital.
“If a person does not receive treatment for a wound infection, the infection can spread to other parts of the body, which may lead to serious complications.” (Dasgupta was not involved in the new study.)
In a review of 26 medical studies, a handheld device using autofluorescence imaging successfully “lit up” bacteria in nine out of 10 wounds. (iStock)
The lighting technology allows clinicians to see bacteria in real time, leading to more targeted and effective wound care, according to the study researchers.
“Fluorescence imaging, particularly with devices like MolecuLight, offers a significant advancement in the ability to detect bacterial loads in chronic wounds, such as diabetic foot ulcers,” lead study author Dr. David G. Armstrong, professor of neurological surgery and director of the USC Limb Preservation Program, told Fox News Digital.
“If a person does not receive treatment for a wound infection, the infection can spread to other parts of the body, which may lead to serious complications.”
It could also help prevent the need for antibiotics, as the bacteria can be removed before infection occurs.
“The study also explores the potential of wearable fluorescence imaging devices, which could further revolutionize surgical debridement by providing continuous visualization during the procedure,” Armstrong added.
The lighting technology allows clinicians to see bacteria in real time, leading to more targeted and effective wound care, according to the study researchers. (iStock)
One of the most surprising discoveries in the study was that high amounts of bacteria didn’t always cause symptoms, but still slowed down the healing process, the researchers stated.
This highlighted the need for “more sophisticated diagnostic tools” in wound management.
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“The big idea here is that we might be able to get out in front of an infection before having to give someone antibiotics,” said Armstrong. “This is the ultimate kind of stewardship to promote superbugs.”
Based on this study, Armstrong recommends that clinicians consider integrating fluorescence imaging into their standard wound care protocols, especially for chronic wounds like diabetic foot ulcers.
“The big idea here is that we might be able to get out in front of an infection before having to give someone antibiotics.”
“This technology not only improves the accuracy of debridement, but also aids in early intervention, potentially reducing the risk of complications like infections and amputations,” he told Fox News Digital.
“We also recommend that health care providers stay informed about advancements in wearable imaging technologies, which may soon provide even greater flexibility and precision in wound care.”
Fluorescence may not replace lab testing, surgeon says
Dr. Patrick Davis, a facial plastic surgeon at Davis Facial Plastics in Beverly Hills, California, emphasized the importance of preventing bacterial infections — especially for revision rhinoplasties, which he said have a higher risk of this type of complication.
“This technology not only improves the accuracy of debridement, but also aids in early intervention, potentially reducing the risk of complications like infections and amputations,” a researcher said. (iStock)
“There has been modest research with the use of fluorescence to illuminate a particular wound bed,” Davis, who was not involved in the new study, told Fox News Digital.
“The idea is that certain bacteria will emit a certain wavelength of light. Staph infections, for example, would emit a different color than another type of bacteria.”
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This can be helpful in confirming what kind of antibiotic to use for treatment, Davis noted, while also telling the surgeon the “burden of bacteria,” which indicates the level of bacteria in the wound.
The use of this technology still needs more research, according to the surgeon.
The technology could help prevent the need for antibiotics, as the bacteria can be removed before infection occurs. (iStock)
“At this time, this technology would not replace a simple swab of the area and then a laboratory test determining exactly what type of bacteria is present and what antibiotic to use,” he said.
“However, this technology can give a real-time hint at the family of bacteria that is present, although it may not be so specific — that is still reserved for a laboratory to determine.”
Dasgupta agreed that this device could be a “safe, effective, accurate and easy-to-use tool” to improve the assessment of wounds, but he noted that fluorescent light imaging has some limitations when used to detect bacterial infections.
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“The evaluation is limited to bacteria that produce fluorescent molecules on the skin’s surface and subsurface,” Dasgupta told Fox News Digital.
“The detection ability is also dependent on the number of bacteria present in the wound,” he went on. “Also, wound depth cannot be captured with this type of evaluation.”
Study limitations
The primary limitation of this study is that it depended on “controlled lighting conditions” in order for the fluorescence imaging devices to function accurately, Armstrong noted.
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“This could be a challenge in certain clinical settings, particularly in real-time surgical environments,” he said.
Chronic wounds affect around 6.5 million patients in the U.S.
More research is also needed to confirm the effectiveness of wearable devices compared to the existing handheld devices.
The study is partially funded by the National Institutes of Health, the National Institute of Diabetes and Digestive and Kidney Diseases, and the National Science Foundation’s Center to Stream Healthcare in Place.
Health
Brain Health Challenge: Doctor Appointments for Your Mind and Body
Congratulations, you’ve reached the final day of the Brain Health Challenge! Today, we’re asking you to do a few things that might feel a bit out of left field — like getting your blood pressure checked.
No, it isn’t as fun as playing Pips, but experts say it’s one of the most important things you can do for your brain. That’s because heart health and brain health are intrinsically linked.
High blood pressure, in particular, can damage brain cells, and it’s a significant risk factor for stroke and dementia. When blood pressure is too high, it places stress on the walls of arteries in the brain. Over time, that added stress can cause the blood vessel walls to thicken, obstructing blood flow. In other cases, the increased pressure causes the artery walls to thin and leak blood into the brain.
These changes to the blood vessels can sometimes cause a large stroke to occur. More commonly, the damage leads to micro-strokes and micro-hemorrhages, which cause fewer immediate problems and often go unnoticed. But if someone has hypertension for years or decades, these injuries can build up, and the person may start to experience cognitive impairment.
High blood pressure “is known as a silent killer for lots of reasons,” said Dr. Shyam Prabhakaran, the chair of neurology at the University of Chicago. “It doesn’t cause you any symptoms until it does.”
Because the damage accumulates over many years, experts say that managing blood pressure in midlife matters most for brain health. Hypertension can be addressed with medication or lifestyle changes, as directed by your doctor. But the first thing you need to do is know your numbers. If your blood pressure comes back higher than 120/80, it’s important to take it seriously, Dr. Prabhakaran said.
While you’re at it, there are a few other aspects of your physical health that you should check on.
Your eyes and ears are two of them. Hearing and vision loss have both been shown to increase the risk of dementia. Experts think that with less sensory information coming in to stimulate the brain, the regions that process hearing and vision can start to atrophy. What’s more, people with sensory loss often withdraw or are left out of social interactions, further depriving them of cognitive stimulation.
Oral health can also affect your brain health. Research has found a connection between regular flossing and reduced odds of having a stroke. That may be because good oral health can help to reduce inflammation in the body. The bacteria that cause gum disease have also been tied to an increased risk of Alzheimer’s.
And have you gotten your shingles vaccine? There is mounting evidence that it’s a powerful weapon for protecting against dementia. One study found that it lowered people’s odds of developing the condition by as much as 20 percent.
To wrap up this challenge, we want you to schedule a few medical appointments that benefit your brain, as well as your body.
After five days of feeding, exercising and challenging your brain, you are well on your way to better cognitive health. Thanks for joining me this week, and keep up the good habits!
Health
Health experts react as Andrew Huberman backs Trump admin’s new food pyramid
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The Trump administration has taken a new approach to the food pyramid.
The Department of Health and Human Services (HHS) announced new guidelines on Wednesday with an updated, inverted pyramid. The top of the pyramid, which is now the wider part of the structure, is built on meat, fats, fruits and vegetables, while whole grains are at the narrow bottom.
This follows HHS Secretary Robert F. Kennedy Jr.’s mission to “Make America Healthy Again” (MAHA), aimed at addressing chronic disease, childhood illnesses and ultraprocessed foods.
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“The new guidelines recognize that whole, nutrient-dense food is the most effective path to better health and lower health care costs,” Kennedy said during a press briefing in Washington, D.C.
“Protein and healthy fats are essential, and were wrongly discouraged in prior dietary guidelines. We are ending the war on saturated fats.”
The Trump administration announces the 2025-2030 Dietary Guidelines for Americans, putting “real food” back at the center of health. (realfood.gov)
The HHS secretary rallied against refined carbohydrates, food additives and added sugar, highlighting the health risks associated with sugar-sweetened beverages.
Kennedy’s main message to Americans was to “eat real food.”
TRUMP ADMIN’S NEW NUTRITION GUIDELINES TARGET ULTRA-PROCESSED FOODS, EASE UP ON RED MEAT AND SATURATED FATS
The announcement triggered reactions from top health and wellness voices, including Stanford neuroscientist Dr. Andrew Huberman, host of the “Huberman Lab” podcast.
In a post on X, Huberman shared the White House’s graphic of the new pyramid, praising the decisions that were made.
“Oatmeal (and I think that’s rice and sourdough) made the cut!” he commented. “In all seriousness, assuming overall calories are kept in check and people exercise & get sun(day)light, this looks spot on.”
He added, “Maybe up the veggies a bit, add low-sugar fermented foods like sauerkraut & this is great.”
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Huberman said in a thread on the same post that Americans “don’t have to eat all the foods” shown in the diagram.
“You won’t see me drinking milk or eating shrimp,” he said. “Nothing against shrimp, I just don’t like the taste. Aversion to crustaceans.”
“Maybe up the veggies a bit, add low-sugar fermented foods like sauerkraut & this is great,” Huberman commented on X. (Chance Yeh/Getty Images for HubSpot; iStock)
The new guidelines received praise from other major health figures, including former FDA commissioner Dr. David Kessler.
“There should be broad agreement that eating more whole foods and reducing highly processed carbohydrates is a major advance in how we approach diet and health,” Kessler told The Associated Press.
“Protein and healthy fats are essential, and were wrongly discouraged in prior dietary guidelines.”
Dr. Bobby Mukkamala, president of the American Medical Association, shared in a statement that these guidelines “affirm that food is medicine and offer clear direction patients and physicians can use to improve health.”
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“The American Medical Association applauds the Administration’s new Dietary Guidelines for spotlighting the highly processed foods, sugar-sweetened beverages and excess sodium that fuel heart disease, diabetes, obesity and other chronic illnesses,” Mukkamala wrote.
The American Medical Association applauded the HHS for its updated nutrition guidelines. (iStock)
But not all feedback was positive.
Some people expressed concern about prioritizing red meat and dairy, while calling for the limitation of saturated fat.
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Neal Barnard, president of the Physicians Committee for Responsible Medicine, shared in a reaction to STAT that while the guidelines “do have one or two good points, emphasizing fruits and vegetables and limiting alcohol,” the guidelines are “for the most part a strong reflection of industry influence.”
Christopher Gardner, a nutrition expert at Stanford University, also spoke out against the new guidelines, as reported by NPR.
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“I’m very disappointed in the new pyramid that features red meat and saturated fat sources at the very top, as if that’s something to prioritize. It does go against decades and decades of evidence and research,” said Gardner, who was a member of the Dietary Guidelines Advisory Committee.
Fox News Digital’s Rachel Wolf, as well as Alexandria Hoff of Fox News, contributed reporting.
Health
Matt Damon’s Gluten-Free Diet Helped Him Lose 18 Pounds
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