Health
How wildfire smoke affects the body: Doctors warn of health hazards
The Los Angeles wildfires have caused devastating losses of homes and lives — and survivors may also face hidden, although still potentially very dangerous, health effects.
Wildfire smoke contains a “complex mixture” of fine particles that can pose hazards after just short-term exposure, according to the U.S. Environmental Protection Agency (EPA).
Known as PM2.5, or particulate matter, these microscopic particles and droplets are 2.5 micrometers or less in diameter.
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“Your nose and mouth are entry points into your body,” Dr. Gustavo Ferrer, a Florida pulmonologist with extensive experience in respiratory health and air quality-related illnesses, told Fox News Digital.
“The smoke you are breathing gets caught inside your sinuses, and if you’re exposed a lot, some of that will start to irritate the lining and lead to inflammation,” a doctor warned. (AP Photo/Noah Berger) (AP Newsroom)
“The smoke you are breathing gets caught inside your sinuses, and if you’re exposed a lot, some of that will start to irritate the lining and lead to inflammation,” he warned.
“These are signs that the pollution may be overwhelming the body’s natural defenses.”
Austin Perlmutter, MD, a board-certified internal medicine physician in Seattle, noted that exposure to wildfire smoke can penetrate through the lung tissue and enter the bloodstream.
Specific health effects
People exposed to air pollution can have a number of different symptoms, including burning eyes, sore throat, cough, sinus problems, fatigue, headaches, chest pain, shortness of breath and brain fog, according to Perlmutter.
Prolonged exposure to wildfire smoke can also aggravate existing conditions such as asthma, bronchitis and other chronic respiratory diseases, Ferrer noted.
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“The smoke can also worsen pre-existing respiratory conditions, like asthma or emphysema,” noted Dr. Marc Siegel, clinical professor of medicine at NYU Langone Health and Fox News senior medical analyst.
“Also, not having enough oxygen can provoke a heart attack or stroke.”
People exposed to air pollution can have a number of different symptoms, including burning eyes, sore throat, cough, sinus problems, fatigue, headaches, chest pain, shortness of breath and brain fog. (AP Photo/Eric Thayer) (AP Newsroom)
Wildfire smoke has also been linked to an increased risk of a number of diseases, including heart and lung problems and brain dysfunction, Perlmutter added.
Certain groups are at a higher risk, he cautioned, including people with underlying heart and lung diseases or other existing chronic diseases, as well as infants, young children and older adults.
“The smoke can worsen pre-existing respiratory conditions, like asthma or emphysema.”
There are also mental health effects, according to Siegel.
A 10-year study in Nature Mental Health showed a “significant mental health impact” on Californians exposed to wildfires, the doctor pointed out.
“People may feel anxiety over being displaced or fear of losing their homes,” Siegel said. “This may lead to them being unable to sleep.”
There is also the increased danger of falls and other injuries from being in damaged areas where fire-related devastation occurred, he added.
6 tips to protect health amid wildfires
Experts shared the following steps people can take to help reduce the risk of wildfire health effects.
1. Practice nasal hygiene
Keeping your nasal passages open and clean is essential, Ferrer emphasized.
“Washing daily, or up to two times a day or regularly, using a saline nasal spray can help clean the filter that’s inside your nose so it’s as effective as possible,” he told Fox News Digital.
During periods of high smoke levels, it’s best to limit time outdoors and keep windows and doors closed, experts agreed. (Richard Vogel)
People can use a pre-made saline solution or make their own at home with distilled water and salt, he said.
2. Stay indoors and optimize indoor air
During periods of high smoke levels, it’s best to limit time outdoors and keep windows and doors closed, according to Ferrer.
Using HEPA filters can also help to improve air quality, Shah noted.
“Invest in air purifiers with HEPA filters to trap fine particulate matter (PM2.5) from wildfire smoke,” he suggested.
Shah also recommends using weather stripping where needed and changing HVAC filters at a higher frequency.
During the first few months of cleanup, excess chemicals and particulates that are released can significantly worsen air quality. (iStock)
People may also want to minimize “indoor air pollution,” Perlmutter added.
“Don’t light candles, fires or incense and don’t smoke indoors,” he advised. “If you cook, ventilate using a hood if you have one.”
3. Consider leaving the area temporarily
During the first few months of cleanup, excess chemicals and particulates that are released can significantly worsen air quality, warned Dr. Darshan Shah, MD, a board-certified surgeon and founder and CEO of Next Health in California.
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“Consider relocating temporarily to a safer area until conditions improve,” he recommended.
4. Wear a mask
When venturing outside, experts recommend wearing a well-fitting N95 respirator mask to filter out smoke particles.
When venturing outside, experts recommend wearing a well-fitting N95 respirator mask to filter out smoke particles. (AP Newsroom)
“Cloth masks, dust masks and other lower quality masks likely won’t provide much protection,” Perlmutter said.
5. Monitor air quality
Experts recommend regularly checking the AQI (Air Quality Index).
“Use apps or websites (like AirNow) to monitor air quality and avoid outdoor activities when AQI is unhealthy,” Shah said.
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6. Do not tour burned areas
“Avoid visiting recently burned areas, as they pose a high risk of exposure to harmful chemicals and smoldering smoke, which can severely impact respiratory and overall health,” Shah advised.
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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