Health
Erectile dysfunction meds like Viagra linked to reduced Alzheimer's risk, study suggests
Erectile dysfunction medication could reduce the risk of Alzheimer’s disease, a new study is suggesting, though some experts cast doubt on the link between the two.
In a study by University College London researchers in the U.K., men who were prescribed phosphodiesterase type 5 inhibitors, otherwise known as erectile dysfunction drugs, were 18% less likely to develop Alzheimer’s disease years later.
The study, published in the journal Neurology by the American Academy of Neurology, surveyed 269,725 men who had been diagnosed with erectile dysfunction without any memory problems or cognitive deficits.
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Among the respondents, 55% were taking erectile dysfunction medication, including sildenafil (Viagra), tadalafil (Cialis), vardenafil and avanafil.
These men were compared to the remaining respondents, who were not prescribed these drugs.
Viagra and Cialis tablets are pictured on a tray at a New York pharmacy on Tuesday, May 18, 2004. (Daniel Acker/Bloomberg via Getty Images)
Researchers adjusted the results for factors like age, underlying health conditions, smoking status and co-prescribed medications.
The findings pointed to an 18% Alzheimer’s risk reduction in patients who were prescribed erectile dysfunction drugs after a follow-up period of about five years.
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The strongest association was among men who took these drugs more regularly, the study found.
Erectile dysfunction drugs “act on a cell-signaling messenger that has also been investigated for its links to memory,” according to a UCL press release.
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)
“These drugs are also able to cross the blood-brain barrier and may affect brain cell activity,” the press release stated.
Animal research has discovered that erectile dysfunction medication has “some neuroprotective benefits,” according to the UCL researchers.
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Lead study author Dr. Ruth Brauer, of the UCL School of Pharmacy, commented in the release on the progression of new Alzheimer’s treatments.
“Although we’re making progress with the new treatments for Alzheimer’s disease that work to clear amyloid plaques in the brain for people with early stages of the disease, we desperately need treatments that can prevent or delay the development of Alzheimer’s disease,” she said.
“More research is needed to confirm these findings, learn more about the potential benefits and mechanisms of these drugs, and look into the optimal dosage.”
“This observational study is based on electronic health care records.”
A randomized, controlled trial including both men and women is warranted, Brauer added.
Ozama Ismail, PhD, director of scientific programs at the Alzheimer’s Association, was not involved in the study but commented on the findings in a statement to Fox News Digital.
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“While this study is interesting and adds to a potential association, there is no evidence that these drugs are able to treat Alzheimer’s disease,” he said.
“This observational study is based on electronic health care records and cannot determine if the connection is meaningful without further exploration.”
An Alzheimer’s expert said patients should always consult their doctor before changing medications. (iStock)
Further research and clinical trials are a “necessary step” before considering erectile dysfunction medications as a treatment for Alzheimer’s, Ismail noted.
“Such trials would need to include diverse participants — including women — to conclusively determine if this class of drug can meaningfully treat Alzheimer’s disease,” he said.
An “important limitation” of the study is that Alzheimer’s diagnoses were not determined using “gold standard” testing, the expert said, which would include “imaging biomarkers and/or assessment at autopsy.”
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Ismail warned that patients should not use over-the-counter erectile dysfunction drugs to prevent Alzheimer’s or other forms of dementia.
“Always consult with your physician before starting or changing your medications,” he advised.
An expert warned that patients should not use over-the-counter erectile dysfunction drugs to prevent Alzheimer’s or other forms of dementia. (BSIP/Universal Images Group via Getty Images)
Although the study was limited, Ismail said, it highlights a “potential new avenue for drug repurposing.”
He added, “The repurposing of existing, approved treatments can be a valuable part of drug development because, through already completed testing, we know much about their safety and side effects.”
“This can sometimes reduce the length and cost of studies needed for the new indication.”
Repurposing drugs for the treatment of Alzheimer’s would require new studies to be conducted over longer periods of time and in older people that “reflect the diversity of individuals living with Alzheimer’s disease,” Ismail said.
Fox News Digital reached out to the UCL researchers for additional comment on the study.
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The leading causes of death have changed dramatically since America’s founding 250 years ago, highlighting how far medicine has come.
Diseases that once devastated communities have largely given way to chronic conditions, data shows, reflecting centuries of breakthroughs in public health, prevention and treatment.
“The amount of changes that have happened over the past 250 years are immeasurable when it comes to life expectancy and disease,” Kenneth J. Perry, M.D., an emergency physician in Charleston, South Carolina, told Fox News Digital.
5 OF AMERICA’S GREATEST MEDICAL BREAKTHROUGHS REVEALED AS THE NATION MARKS 250 YEARS
“Our life expectancy as a country increased from roughly 30 years at the time of the country’s founding to close to 80 years today.”
Check out the following details.
An illustration of an 18th century hospital. The leading causes of death have changed dramatically since America’s founding 250 years ago. (Hulton Archive/Getty Images)
What killed Americans in 1776?
Although there were no official national mortality records in 1776, historians agree that the following illnesses were responsible for the largest number of deaths.
- Smallpox: This viral disease, which causes fever and a blistering rash, had about a 30% fatality rate before the first vaccine became available in 1796. Historians estimate the North American epidemic killed at least 100,000 to 130,000 people over several years.
- Tuberculosis: Also known as consumption, this bacterial infection primarily attacks the lungs. It was one of the leading chronic causes of adult death in the colonies, according to the National Library of Medicine (NLM).
- Pneumonia: A lung infection that fills air sacs with fluid or pus, pneumonia was frequently fatal in 1776 because no antibiotics or effective treatments existed, per the National Institutes of Health (NIH).
- Dysentery and diarrheal diseases: Intestinal infections, which caused severe diarrhea and dehydration, were common in 1776 because of poor sanitation and contaminated food and water, especially in military camps, per NIH and NLM.
- Malaria: This mosquito-borne parasitic disease causes recurrent fever and chills. It was endemic throughout much of the Southern colonies, the CDC states.
- Yellow fever: A mosquito-borne viral disease, yellow fever can cause liver failure and bleeding. Periodic epidemics struck colonial port cities in the late 1700s, NLM records show.
- Typhoid fever: This bacterial infection spreads through contaminated food and water. Recurring outbreaks were common in places where sanitation was poor, historians confirm.
- Childbirth complications: Maternal deaths from hemorrhage, infection or obstructed labor were common in 1776. This was a major cause of death among women of childbearing age, the NLM states.
- Wound infections: In colonial times, cuts or injuries often led to bacterial infections. These could prove fatal because antisepsis therapies, germ theory and antibiotics did not yet exist.
- Infant mortality: It was extremely common for children to die before age 1, with roughly 10% to 30% of infants not living to their first birthday in many colonial communities, historical records show.
These conditions had much higher fatality rates in 1776 because Americans had no antibiotics, few vaccines, no understanding of germ theory, no sterile surgical techniques and limited access to hospitals, experts note.
Yellow fever epidemic in Philadelphia, 1793. Carriages rumbled through the streets to pick up the dying and the dead. (Getty Images)
There was also a lack of safe drinking water, modern sewage systems and refrigeration — making it more likely for foodborne and waterborne illnesses to spread.
Patients also did not yet have access to blood transfusions, anesthesia and other lifesaving medical advances, according to the CDC, NLM and NIH.
Common causes of death in the 1900s
The first official national mortality statistics were published by the U.S. Census Bureau in 1900.
The data points to the following leading causes of death in the 1900s.
- Influenza & pneumonia: Viral flu and bacterial/viral lung infections were responsible for about 40,000 to 65,000 deaths per year during the period between 1900 and 1910, according to the CDC’s National Center for Health Statistics (NCHS).
- Tuberculosis: The bacteria lung infection claimed about 35,000 to 40,000 lives per year during that same time frame, per the above source.
- Diarrhea/enteritis: Intestinal infections causing severe dehydration led to approximately 25,000 to 35,000 annual deaths between 1900 and 1910.
- Heart disease: Diseases affecting the heart and circulatory system killed between 27,000 and 40,000 Americans per year in this time frame, according to NCHS.
- Stroke: Strokes, which interrupt the flow of blood to the brain, took between 20,000 and 30,000 lives annually.
- Kidney disease: Diseases that impair kidney function (also called nephritis), killed between 17,000 and 25,000 people in the U.S. each year, data shows.
- Accidents: Between 15,000 and 22,000 Americans died each year from unintentional injuries at work, home and in transportation, per NCHS.
- Cancer: Various types of cancer, in which malignant tumors invade surrounding tissues, contributed to between 13,000 and 20,000 deaths annually in this time frame.
- Senility: This was a historical diagnosis for deaths attributed to old age in the early 1900s. It was listed as the cause of death for about 12,000 to 18,000 people per year.
- Diphtheria: The bacterial throat infection, which can block the airway, led to 8,000 to 12,000 deaths per year, mortality data highlights.
Nearly one-third of all deaths were caused by pneumonia, tuberculosis and diarrheal diseases, and about 30% of all deaths occurred in children younger than age 5, records show.
A diphtheria vaccination is administered in the 1900s in this illustration. (Getty Images)
Medical breakthroughs that transformed survival
The introduction of vaccines dramatically reduced certain diseases, including smallpox, polio, diphtheria, measles and whooping cough.
In 1980, smallpox became the first human disease ever eradicated worldwide.
The introduction of vaccines dramatically reduced certain diseases, including smallpox, polio, diphtheria, measles and whooping cough. (iStock)
Improvements in clean water and sanitation also contributed to greater longevity, as cities built sewage systems, water treatment plants and indoor plumbing, according to the CDC. As a result, deaths from cholera, dysentery and typhoid fever fell dramatically.
Germ theory also emerged in the late 1800s, in which scientists discovered that germs caused disease. This led to vast transformations in surgery, childbirth, handwashing, sterilization and infection control, per NIH and the Science History Institute.
In the 1940s, the widespread use of penicillin allowed for the treatment of diseases that were once fatal.
Routine screening has enabled earlier detection of breast, cervical and colorectal cancers, while improvements in surgery, radiation therapy, chemotherapy, targeted therapies and immunotherapy have helped many patients live longer.
A recent analysis by the National Cancer Institute found that prevention and screening accounted for about 80% of the cancer deaths averted over the past 45 years for five major cancer types.
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In the 1940s, the widespread use of penicillin allowed for the treatment of diseases that were once fatal, including pneumonia, strep infections, wound infections and sepsis.
Advances in childbirth — including prenatal care, Cesarean sections, blood transfusions, antibiotics and neonatal intensive care — also dramatically improved maternal and infant survival compared with colonial America.
The use of CPR, defibrillators, coronary care units, bypass surgery, stents, statins and blood pressure medications helped to reduce cardiovascular deaths. (iStock)
The mid-20th century also ushered in improvements in heart disease treatments. The use of CPR, defibrillators, coronary care units, bypass surgery, stents, statins and blood pressure medications helped to reduce cardiovascular deaths, according to the American Heart Association.
What’s killing Americans today?
In a vast contrast to 1776, chronic diseases now account for most American deaths, because people generally live long enough to develop them.
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Current U.S. health data indicates that the following conditions are now the leading causes of death.
- Heart disease: Disorders affecting the heart and blood vessels, including coronary artery disease and heart attacks, killed more than 638,000 Americans in 2024, according to NCHS data.
- Cancer: Approximately 619,876 people died of cancer in the U.S. in 2024.
- Unintentional injuries: Accidental deaths, including drug overdoses, motor vehicle crashes and falls, were the causes of more than 197,440 deaths that same year, records show.
- Stroke: Interruption of blood flow to the brain, which causes brain damage, claimed 166,852 American lives in 2024, per NCHS.
- Chronic lower respiratory disease: Long-term lung diseases — such as COPD, emphysema and chronic bronchitis — killed 145,643 people in the U.S. that year.
- Alzheimer’s disease: The most common type of dementia, which destroys memory and cognitive function, was responsible for 116,022 deaths in 2024, NCHS data shows.
- Diabetes: The chronic disease, which impairs the body’s ability to properly regulate blood sugar, contributed to 94,445 deaths that year.
- Kidney disease: Diseases that damage the kidneys and impair their ability to filter blood were blamed for 55,081 deaths in 2024.
- Chronic liver disease/cirrhosis: Progressive liver damage caused by conditions such as hepatitis, alcohol misuse or fatty liver disease were responsible for 52,274 deaths that year, per NCHS.
- Suicide: Death caused by intentional self-harm claimed 48,824 lives in 2024. (If you or someone you know is having thoughts of suicide, please contact the National Suicide Prevention Lifeline at 1-800-273-TALK (8255).)
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“The transformation of deaths in the last 250 years, largely from infectious diseases to currently chronic debilitating diseases, represents both success and new challenges Americans will have to face,” Dr. Omer Awan, a physician and professor at the University of Maryland School of Medicine, told Fox News Digital.
“The chronic disease epidemic has been fueled by a lack of exercise, as well as by diets rich in fats, salts and ultraprocessed foods,” a doctor told Fox News Digital. (iStock)
The uptick in chronic diseases is driven not only by an increasingly aging population, but by people’s lifestyle behaviors, according to the doctor.
“The chronic disease epidemic has been fueled by lack of exercise, as well as diets rich in fats, salts and ultraprocessed foods,” he told Fox News Digital. “This has also led to the rise of obesity, which contributes to many of the chronic medical conditions that are among the top killers for Americans in the modern era.”
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Public health advances can change the course of health for millions of Americans, Awan said.
“Just as vaccines and antibiotics prolonged life centuries ago, so can lifestyle changes, exercise and new therapies that target obesity — like GLP-1 drugs and medications that promote better metabolic health.”
Novo Nordisk to slash Wegovy, Ozempic list prices
Board certified rheumatologist Dr. Mahsa Tehrani discusses Novo Nordisk’s decision to dramatically cut the U.S. list prices for its popular diabetes and weight-loss drugs Ozempic and Wegovy on ‘America Reports.’
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Millions of Medicare beneficiaries struggling with obesity could soon see the cost of weight-loss drugs plummet, as a new federal pilot program launching July 1 expands access to GLP-1 medications like Wegovy and Zepbound for eligible seniors.
Through a new trial called Medicare GLP-1 Bridge, the federal government is now offering a selection of the brand-name medications to certain Medicare and Medicare Advantage beneficiaries for $50 a month, The Associated Press reported.
The covered medications include drugmaker Eli Lilly’s Foundayo tablets and Zepbound KwikPens and Novo Nordisk’s Wegovy injections and tablets, all of which have been FDA-approved for weight loss, according to the report.
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The temporary program is set to run until the end of 2027.
This is the first time GLP-1s (glucagon-like peptide-1 receptor agonists) will be covered by insurance when used solely for weight loss.
A new federal pilot program launching July 1 expands access to GLP-1 medications like Wegovy and Zepbound for eligible seniors. (iStock)
Prior to this new Medicare pilot, seniors who wanted to access GLP-1s for obesity alone paid about $1,350-$1,650 per month for Novo Nordisk’s Wegovy (semaglutide) and about $1,086 monthly for Lilly’s Zepbound (tirzepatide). However, both manufacturers offered some cash-pay options that significantly reduced those prices for eligible patients.
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There are some parameters surrounding the coverage — older adults must have had a body mass index (BMI) of 35 or higher when they started GLP-1 therapy, or a BMI of 27 or higher alongside another health condition, such as a past heart attack or stroke or prediabetes.
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Those who already have insurance coverage for other diseases, such as diabetes and sleep apnea, are not eligible for the program.
Through a new trial called Medicare GLP-1 Bridge, the federal government is now offering a selection of the brand-name medications to certain Medicare and Medicare Advantage beneficiaries for $50 a month. (iStock)
There are more than 70 million Americans currently enrolled in Medicare, 10 million of whom are overweight or obese, according to Juliette Cubanski, vice president and director of the program on Medicare policy at the healthcare research nonprofit KFF.
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“For many older Americans living with obesity, this is a moment they and their families have been waiting for,” Jamey Millar, Novo Nordisk’s executive vice president of U.S. operations, said in a press release.
“The Medicare GLP-1 Bridge program offers a new, affordable path to an FDA-approved treatment that was previously not covered.”
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Dr. Mehmet Oz, administrator of the Centers for Medicare & Medicaid Services, said he hopes the program can help his agency collect data to potentially work toward longer-term coverage, while providing immediate relief to cash-strapped older Americans, AP reported.
“The sheer cost of these medications is a huge barrier to access,” he said in a call with reporters. “That ends today.”
Prior to this new Medicare pilot, seniors who wanted to access GLP-1s for obesity alone paid about $1,350-$1,650 per month for Novo Nordisk’s Wegovy (semaglutide) and about $1,086 monthly for Lilly’s Zepbound (tirzepatide). (iStock)
Oz told reporters that CMS plans to “carefully track participation and outcomes” to see whether an extension of the Bridge program or another solution is the best way to move forward. He told AP a federal law permanently allowing the coverage is “not essential right now” but something “for Congress to debate amongst themselves.”
“We can’t decide what’s going to happen long term with Bridge until we see some of the data,” he said, adding that there are ongoing talks with drug companies to lower costs.
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One potential concern is that older patients tend to have more adverse effects to medication in general , according to Dr. Micah Eimer, a clinical assistant professor of cardiology at the Northwestern University Feinberg School of Medicine.
“Specifically, in our research, older patients on blood pressure medications were more likely to experience hypotensive side effects, such as fainting and dizziness, after starting a GLP-1,” he said in a statement.
The Associated Press contributed to this report.
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