Health
High blood pressure and Alzheimer’s disease could go hand in hand, study finds
The risk of Alzheimer’s disease could escalate along with high blood pressure, according to a new study.
Published in the medical journal Neurology, the research found that people age 60 and older who have untreated high blood pressure may be more likely to develop the common dementia type.
Although the results don’t prove that untreated high blood pressure causes the disease, they do show an association, the American Academy of Neurology stated in a press release.
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Study author Matthew J. Lennon, M.D., PhD, of the University of New South Wales in Australia, wrote in a statement that high blood pressure is a “leading cause of stroke and cerebrovascular disease, and yet it can be controlled with medication, reducing a person’s risk of these diseases.”
The study found that people age 60 and older with untreated high blood pressure may have an increased risk of Alzheimer’s. (iStock)
While previous research has found that taking blood pressure medications can reduce dementia risk, according to Lennon, less is known about the condition’s impact on Alzheimer’s risk.
“Our meta-analysis looked at older people and found that not treating blood pressure may indeed increase a person’s risk,” he said.
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The researchers analyzed 31,250 people averaging 72 years old who were involved in studies measuring cognitive change and dementia diagnosis over time, the release stated.
After four years, 1,415 of those individuals developed Alzheimer’s disease.
A doctor points at potential evidence of Alzheimer’s disease spotted in a PET scan at Brigham And Women’s Hospital in Boston on March 30, 2023. (REUTERS/Brian Snyder/File photo)
People with untreated high blood pressure had a 36% increased risk of Alzheimer’s compared to those without the condition, the study found.
They had a 42% increased risk in comparison to those with high blood pressure who were taking blood pressure medication.
“This relationship is not altered by increasing age, which indicates that even those in their 70s and 80s are at significantly lower risk of AD if hypertension is treated,” Lennon told Fox News Digital in an email.
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“These results suggest that treating high blood pressure as a person ages continues to be a crucial factor in reducing their risk of Alzheimer’s disease,” he added.
The researchers also found that there were no significant risk differences in the effects of blood pressure or medication use across different sexes or racial groups.
“This is a very promising result, as it suggests that optimal care for one group will be similar for others,” Lennon noted.
“Treating high blood pressure as a person ages continues to be a crucial factor in reducing their risk of Alzheimer’s disease.”
Dr. Marc Siegel, a professor of medicine at NYU Langone Medical Center and Fox News senior medical analyst, reacted to these findings in a conversation with Fox News Digital.
Alzheimer’s involves “neuroinflammation and the formation of plaques, which interfere with neuronal communication,” noted Siegel, who was not involved in the study.
“We have long known that high blood pressure, high cholesterol and high glucose levels — as well as obesity, smoking and alcohol use — contribute to increased risk of heart attack, stroke and vascular dementia,” a doctor told Fox News Digital. (iStock)
Added the doctor, “High blood pressure may accelerate this development by interfering with oxygen and blood supply to the nerve cells of the brain in some areas — especially the frontal lobe, which is affected.
Dr. Elizabeth Landsverk, geriatric medicine physician and author in California, was not involved in the study but said she was not surprised by the findings.
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“We have long known that high blood pressure, high cholesterol and high glucose levels — as well as obesity, smoking and alcohol use — contribute to increased risk of heart attack, stroke and vascular dementia,” she told Fox News Digital.
“This new study also finds a decreased risk of Alzheimer’s disease (amyloid proteins deposing the brain) among those treated for hypertension.”
Potential study limitations
The researchers used data from 14 different longitudinal studies from around the world, Lennon noted, which means there may be some variability in the way they define dementia and high blood pressure.
“Most of the studies also did not report mortality data, and thus our analysis did not account for the competing risks of dementia and death,” the researcher told Fox News Digital.
“These results suggest that treating high blood pressure as a person ages continues to be a crucial factor in reducing their risk of Alzheimer’s disease,” a study researcher said. (iStock)
Factors like socioeconomic status, health literacy, access to medications, poorly managed medical conditions, and depression and other mental illnesses could also confound the association between hypertension status and dementia risk, Lennon added.
“Because the study is taken over a long period of time, any number of outside variables can alter the results, making it less reliable,” Landsverk noted.
Hypertension is extremely common, affecting two-thirds of those over age 65 and around 1.3 billion people worldwide, Lennon noted.
“In the vast majority of cases, it is clinically silent, causing no symptoms until you present with a heart attack, a stroke, or — as we now have shown — dementia,” Lennon said.
Hypertension is extremely common, affecting two-thirds of those over the age of 65 and around 1.3 billion people worldwide. (iStock)
Only 28% of those with high blood pressure have it under adequate control, he noted.
“While you might not feel the consequences of high blood pressure immediately, it is really important that you keep a close eye on it and bring it under control if you want to maximize your chance at a longer, happier, healthier life,” Lennon added.
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For those who are obese, Landsverk added, losing weight is the fastest way to decrease risk factors.
“In general, the healthiest approach is adopting a plant-based diet and exercising 30 minutes each day to reduce your risk of heart attack, stroke, dementia and now Alzheimer’s disease by as much as 40%,” she advised.
Health
Brain Health Challenge: Try the MIND Diet
Welcome to Day 2 of the Brain Health Challenge. Today, we’re talking about food.
Your brain is an energy hog. Despite comprising about 2 percent of the average person’s body mass, it consumes roughly 20 percent of the body’s energy. In other words, what you use to fuel yourself matters for brain health.
So what foods are best for your brain?
In a nine-year study of nearly 1,000 older adults, researchers at Rush University in Chicago found that people who ate more of nine particular types of food — berries, leafy greens, other vegetables, whole grains, beans, nuts, fish, poultry and olive oil — and who ate less red meat, butter and margarine, cheese, sweet treats and fried food had slower cognitive decline.
Based on these findings, the researchers developed the MIND diet.
Large studies encompassing thousands of people have since shown that following the MIND diet corresponds with better cognitive functioning, a lower risk of dementia and slower disease progression in people with Alzheimer’s. People benefit from the diet regardless of whether they start it in midlife or late life.
Experts think the foods included in the MIND diet are especially good for the brain because they contain certain macro and micronutrients.
Berries and leafy greens, for example, are rich in polyphenols and other antioxidants, said Jennifer Ventrelle, a dietitian at Rush and a co-author of “The Official Mind Diet.” Many of these compounds can cross the blood-brain barrier and help to fight inflammation and oxidative stress, both of which can damage cells and are linked to dementia.
Nuts and fatty fishes, like salmon and sardines, contain omega-3 fatty acids, which are important for building the insulating sheaths that surround the nerve fibers that carry information from one brain cell to another.
Whole grains and beans both contain a hefty dose of fiber, which feeds the good microbes in the gut. Those microbes produce byproducts called short-chain fatty acids that experts think can influence brain health via the gut-brain axis.
You don’t have to revamp your whole diet to get these nutrients. Instead, think about “MIND-ifying” whatever you already tend to eat, said Dr. Joel Salinas, a neurologist at NYU Langone Health and the founder and chief medical officer of the telehealth platform Isaac Health. For instance, add a handful of nuts or berries to your breakfast.
Today’s activity will help you MIND-ify your own meals. Share your choices with your accountability partner and in the comments, and I’ll discuss the ways I’m adjusting my diet, too. For added inspiration, check out these MIND-approved recipes from New York Times Cooking.
Health
Measles outbreak explodes in South Carolina; multiple people hospitalized as cases surpass 200
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The South Carolina Department of Public Health (DPH) is sounding the alarm after 26 new measles cases were reported since Friday, bringing the total number of cases in the state’s latest outbreak to 211.
DPH first reported a measles outbreak Oct. 2 in the Upstate region. As of Tuesday, 144 people are in quarantine and seven people are in isolation.
Of the 211 cases, 45 involve children under 5, 143 cases involve children ages 5 to 17, 17 cases involve adults and six cases involve minors whose ages weren’t disclosed.
DPH said 196 of the 211 infected individuals were unvaccinated, four were partially vaccinated, one was vaccinated and 10 are either still being investigated or have an unknown vaccination status.
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Hundreds of people in South Carolina have contracted the measles, and a few have been hospitalized. (Jan Sonnenmair/Getty Images)
Officials said 19 of the new cases were associated with “exposures in known households and previously reported school exposures,” and four resulted from church exposures.
DPH identified public exposures at Sugar Ridge Elementary and Boiling Springs Elementary and began notifying potentially exposed students, faculty and staff Dec. 31.
There are nine students in quarantine from the two schools.
Of the 211 cases, 45 involve children under 5 years old. (iStock)
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Exposures also happened at the Tabernacle of Salvation Church, Unitarian Universalist Church of Spartanburg, Slavic Pentecostal Church of Spartanburg and Ark of Salvation Church.
The source of one case is unknown, while two others are still being investigated.
Although complications from measles are not reportable, officials said four people, including adults and children, required hospitalization for complications from the disease.
Officials recommend all children be vaccinated against measles. (Raquel Natalicchio/Houston Chronicle via Getty Images)
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Additional cases required medical care, but the infected individuals were not hospitalized.
Those infected with measles are contagious from four days before the rash appears and may be unaware they can spread measles before they know they have the disease, according to DPH.
DPH said it is important for those with a mild illness or those who are in quarantine to stay home to protect others.
“We encourage employers to support workers in following DPH recommendations to stay out of work while ill or in quarantine, which also protects businesses, other workers and clients,” officials wrote in a statement.
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DPH said vaccinations continue to be the best way to prevent measles and stop the outbreak.
Though the CDC recently released new vaccine recommendations under Health and Human Services Secretary Robert F. Kennedy Jr., its guidelines still dictate all children should be immunized for measles, mumps, rubella, polio, pertussis, tetanus, diphtheria, Haemophilus influenzae type B (Hib), pneumococcal disease, human papillomavirus (HPV) and chickenpox.
Health
Common pain relievers may raise heart disease and stroke risk, doctors warn
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Many might assume that over-the-counter (OTC) medications are generally safer than stronger prescription drugs, but research shows they can still present risks for some.
Certain common OTC painkillers have been linked to an increased risk of high blood pressure, stroke and heart attacks.
Potential risk of NSAIDs
Non-steroidal anti-inflammatory drugs (NSAIDs) — which are used to reduce pain, fever and inflammation — have been pinpointed as the class of medicines most linked to elevated cardiovascular risk.
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“This is because they reduce the production of certain chemicals called prostaglandins,” Maryam Jowza, M.D., an anesthesiologist at UNC Health in North Carolina, told Fox News Digital. “These chemicals are involved in inflammation, but they are also involved in other body functions, such as influencing the tone of blood vessels.”
Certain common OTC painkillers have been linked to an increased risk of high blood pressure, stroke and heart attacks. (iStock)
Dr. Marc Siegel, Fox News senior medical analyst, echoed the potential risk of NSAIDs.
“They can lead to high blood pressure, heart attack and stroke via fluid retention and salt retention,” he told Fox News Digital. “This increases volume, puts a strain on the heart and raises blood pressure.”
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Common examples of NSAIDs include ibuprofen, naproxen, aspirin, diclofenac, indomethacin and celecoxib.
Randomized trials found that ibuprofen caused the biggest spikes in blood pressure, followed by naproxen and then celecoxib.
“In general, the increase in blood pressure is more likely with higher doses and longer duration of treatment,” said Jowza, who is also an associate professor in the Department of Anesthesiology at the UNC School of Medicine.
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NSAIDs can also increase stroke risk, especially at high doses and with long-term use, the doctor added.
Diclofenac was linked to the highest cardiovascular risk, the doctor cautioned. Ibuprofen can also raise blood pressure and has been associated with a higher heart attack and stroke risk, but not as high as diclofenac. Naproxen carries a lower cardiovascular risk than ibuprofen or diclofenac, but is not entirely risk-free.
NSAIDs have been pinpointed as the class of medicines most linked to elevated cardiovascular risk. (iStock)
“The practical takeaway is that diclofenac is generally the least favorable choice in patients with elevated cardiovascular risk, and all NSAIDs should be used at the lowest effective dose for the shortest duration,” Dr. Nayan Patel, pharmacist and founder of Auro Wellness in Southern California, told Fox News Digital.
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Aspirin is an exception — although it is an NSAID, it actually reduces the risk of clots when taken at a low dose for prevention, under a doctor’s guidance. However, it can increase bleeding risk and blood pressure at high doses.
Non-NSAIDs safer, but not risk-free
Non-NSAID pain relievers are commonly used for everyday aches, headaches and fever, but not swelling. They act mainly on the brain’s pain signals, not inflammation, according to medical experts.
Acetaminophen, the most common non-NSAID pain reliever, is also linked to an increase in blood pressure, although to a lesser extent, according to Jowza.
“All NSAIDs should be used at the lowest effective dose for the shortest duration.”
“Acetaminophen was once thought to have little to no cardiovascular effects, but more recent evidence suggests it can increase blood pressure, especially with higher doses used in the long term,” she said, emphasizing the importance of blood pressure monitoring. “Its effect on stroke risk is less clear.”
Which groups are most vulnerable?
The groups at greatest risk, according to doctors, are those with existing health conditions, such as high blood pressure, prior stroke or heart disease, diabetes or kidney problems.
“These groups are also more likely to experience NSAID-related fluid retention and destabilization of blood pressure control,” Patel said.
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Cardiovascular risk is generally higher for people 75 and older, the doctors agreed.
“Age amplifies risk largely because baseline cardiovascular risk increases with age, and kidney function reserve tends to decline,” Patel said. “Older adults are also more likely to be on antihypertensives, diuretics, antiplatelets or anticoagulants, so NSAIDs can destabilize blood pressure control and add safety complexity.”
Warning signs
Anyone experiencing chest pain, shortness of breath, sudden weakness or numbness, severe headache, confusion, slurred speech or vision changes should see a doctor immediately, Jowza advised.
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“These symptoms can point to a heart attack or stroke,” she warned. “Other symptoms of concern that may not develop as rapidly, like new swelling in the legs, should also prompt medical attention.”
Anyone experiencing chest pain, shortness of breath, sudden weakness or numbness, severe headache, confusion, slurred speech or vision changes should see a doctor immediately, a doctor advised. (iStock)
“Patients should also seek medical advice if they notice signs of fluid retention or kidney stress, such as rapidly rising blood pressure, swelling in the legs, sudden weight gain over a few days, reduced urine output or worsening shortness of breath,” Patel added.
Safer alternatives
For those at higher risk, Patel recommends non-NSAID approaches whenever possible.
“For many patients, this means starting with non-drug strategies such as heat or ice, physical therapy and activity modification,” he told Fox News Digital. “If medication is needed, acetaminophen is generally preferred over oral NSAIDs from a cardiovascular standpoint, although regular use should still be monitored in people with hypertension.”
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For localized joint or muscle pain, the doctor said topical NSAIDs can offer “meaningful relief” with “far lower” risk.
“Overall, pain management in high-risk patients should emphasize targeted therapy, conservative dosing and close blood pressure monitoring.”
Bottom line
The doctors emphasized that the overall risk is “very low” for people taking OTC pain relievers on a short-term basis, but it rises with long-term, high-dose use.
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“I would not hesitate to use an occasional dose if it were a low-risk individual with no prior history of heart attack or stroke,” Jowza said. “I also think short-term use in diabetics and hypertensives who are well-controlled is acceptable.”
Although aspirin is an NSAID, it actually reduces the risk of clots when taken at a low dose for prevention, under a doctor’s guidance. (iStock)
For those taking NSAIDs, the doctor suggested using “guard rails” — such as regularly testing blood pressure and kidney function, and setting limits on dosing — to make treatment as safe as possible.
Patel agreed that for most healthy individuals, occasional NSAID use “does not carry a meaningful cardiovascular risk.”
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“The concern is primarily with repeated or chronic use, higher doses, and use in people with underlying cardiovascular, kidney or blood pressure conditions,” he confirmed to Fox News Digital.
“That said, large population studies show that cardiovascular events can occur early after starting NSAIDs, particularly at higher doses, which is why even short-term use should be approached cautiously in higher-risk patients.”
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