Health
Heart attack and stroke risk may rise after COVID infection, study finds
A prior COVID infection could make you more susceptible to heart attack, stroke or death, according to a new study from Cleveland Clinic and the University of Southern California.
The risk of a major cardiac event doubled for the three-year period following a positive COVID test, researchers found — even for those with no history of heart disease.
The researchers analyzed data from 10,005 people 50 and older who had COVID and 217,730 who did not contract the virus, pulled from UK Biobank between February and December 2020.
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The study, which was funded by the National Institutes of Health, was published in the journal Arteriosclerosis, Thrombosis, and Vascular Biology.
A prior COVID infection could make you more susceptible to heart attack, stroke or death, according to a new study. (iStock)
“These studies add to the growing body of data showing that COVID-19 infection can enhance risk for experiencing adverse cardiac events over time,” co-senior study author Stanley Hazen, MD, PhD, chair of cardiovascular and metabolic sciences in Cleveland Clinic’s Lerner Research Institute and co-section head of preventive cardiology, told Fox News Digital.
The researchers were surprised to find that the increased risk remained the same over the three-year period.
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“The twofold increased risk observed in year one following infection was also seen in year two and even year three,” Hazen noted.
“This was seen in all subjects, independent of age, sex or risk factors for cardiac disease.”
Those who had more adverse symptoms experienced a slightly higher risk than those with milder symptoms.
The researchers were surprised to find that the increased risk remained the same over the three-year period. (iStock)
“Specifically, subjects who had severe COVID-19 infection and required hospitalization were at even higher risk of experiencing a major adverse cardiac event (MACE=myocardial infarction, stroke or death) over the ensuing three years of follow-up,” Hazen said.
Blood type also appeared to impact the risk, the study found.
People with a blood type other than O — such as A, B or AB — had double the risk of a major cardiac event than those with an O blood type.
“This study confirms what many of us have seen anecdotally over the past five years.”
Those with O blood have also been shown to have a higher likelihood of getting a COVID infection.
“Given our collective observations and that 60% of the world’s population have these non-O blood types, our study raises important questions about whether more aggressive cardiovascular risk reduction efforts should be considered, possibly by taking into consideration an individual’s genetic makeup,” Hazen said in a press release.
Based on these findings, the researchers recommend that medical providers consider COVID-19 as a risk factor for heart disease. (iStock)
Dr. Bradley Serwer, a cardiologist and chief medical officer at VitalSolution, a Cincinnati, Ohio-based company that offers cardiovascular and anesthesiology services to hospitals nationwide, was not involved in the research but commented on the “interesting” findings.
“This study confirms what many of us have seen anecdotally over the past five years,” he told Fox News Digital.
“Since the outbreak began, we have seen cardiac complications to include inflammation of the heart, a propensity to form blood clots and an increase in abnormal heart rhythms, particularly atrial fibrillation.”
“The lead author, Dr. Hazen, has some fascinating theories that I assume will be tested in the future.”
Reducing the risk
Based on these findings, Hazen recommends that medical providers consider COVID-19 as a risk factor for heart disease.
“Heart disease is the number one killer worldwide,” he noted.
People with a blood type other than O — such as A, B or AB — had double the risk of a major cardiac event than those with an O blood type. (iStock)
“With over a billion individuals worldwide having experienced COVID-19 thus far, these studies argue that this is not a small problem — and I hope this serves as a reminder to address global preventive cardiovascular risk-reducing efforts.”
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Among those efforts are monitoring cholesterol levels and blood pressure, adopting an exercise program, and being more mindful of diet.
Doctors recommend monitoring cholesterol levels and blood pressure, adopting an exercise program, and being more mindful of diet to reduce risk. (iStock)
“Please let this study be a reminder — if you are 50 or older and have experienced COVID, ask if you can do anything further to reduce your cardiac risk,” Hazen advised.
“Also, make sure to stay current with your COVID-19 vaccinations and boosters.”
More research needed, experts agree
The study did have some limitations, experts acknowledged.
“These findings signal the need for further investigation,” Hazen said.
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“A better understanding of what COVID-19 does at the molecular level may potentially teach us about pathways linked to cardiovascular disease risk.”
Serwer agreed, adding, “This study shows an association, but does not prove causality.”
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A new injectable therapy is showing positive results in reducing melanoma throughout a five-year period.
The personalized mRNA cancer therapy, called intismeran autogene, combined with the cancer immunotherapy drug KEYTRUDA (pembrolizumab), is a collaboration between Merck and Moderna.
The results from the phase 2b KEYNOTE-942 study were presented at the American Society of Clinical Oncology (ASCO) Annual Meeting in Chicago on May 27.
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After about a five-year follow-up, the combo drug was found to reduce the risk of melanoma recurrence or death by 49% compared to pembrolizumab alone.
The researchers analyzed data from 157 patients with high-risk stage 3 and 4 melanoma whose cancer had been removed via surgery. The participants were split into two groups — one received the combo therapy and the other only received pembrolizumab, according to a press release.
The therapy was found to reduce the risk of melanoma recurrence or death by 49% compared to pembrolizumab alone after a five-year follow-up. (iStock)
The findings revealed that the combination group saw benefits that were “sustained and durable over time.”
Intismeran autogene is designed using mutations identified in a patient’s own tumor, with the intention of teaching the immune system what the cancer looks like so that it can recognize and attack it.
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According to the researchers, intismeran is “well-tolerated” with a “manageable” safety profile.
The most commonly cited side effects of the personalized mRNA vaccine plus KEYTRUDA were fatigue, injection-site pain, chills, fever and headache. The researchers reported no new long-term safety concerns and no severe vaccine-related adverse events.
The combination therapy is currently being evaluated in a phase 3 study — the final confirmation stage.
Patients with late-stage melanoma have a “significant risk” of cancer recurrence, according to an expert. (iStock)
In a Merck press release from January, Kyle Holen, MD, Moderna’s senior vice president and head of development, oncology and therapeutics, noted that this data highlights the “potential of a prolonged benefit … in patients with resected high-risk melanoma.”
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“We continue to invest in our platform in oncology because of encouraging outcomes like these, which illustrate mRNA’s potential in cancer care,” he said.
Dr. Marjorie Green, senior vice president and head of oncology, global clinical development at Merck Research Laboratories, also commented that for many patients with stage 3 or 4 melanoma, there is a “significant risk of recurrence following surgery.”
Researchers confirmed that the combination therapy is currently being evaluated in a phase 3 study. (iStock)
“As such, demonstrating the longer-term potential of intismeran autogene and KEYTRUDA to reduce the risk of recurrence for certain patients with melanoma is a meaningful milestone,” she said.
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The company cited encouraging five-year follow-up data and pointed to upcoming late-stage INTerpath trial results with Moderna in several hard-to-treat cancers.
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An accidental lab discovery has opened the door to entirely new ways of preventing the flu.
While investigating how influenza replicates, researchers discovered that different flu strains use completely different strategies to infiltrate human cells, SWNS reported.
By targeting the specific molecules the viruses rely on, scientists found that they could block them from entering new cells and halt their replication altogether.
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Researchers say these “fundamental insights” into seasonal influenza highlight a clear path toward developing better preventive medications.
“The hope is that fundamental, curiosity-based research like this helps to pave the way for novel strategies to treat and prevent influenza infections,” principal investigator Dr. Emily Bruce, from the University of Vermont’s Larner College of Medicine, said in the SWNS report.
While investigating how influenza replicates, researchers discovered that different flu strains use completely different strategies to infiltrate human cells. (iStock)
While several flu strains cause illness, H1N1 and H3N2 influenza A viruses are the most common. However, current flu tests cannot differentiate between them, and clinical treatments are identical for both.
Although vaccines and antivirals are available, Bruce noted a “dire” need for better medications to stop the virus from spreading cell to xxcell.
“You don’t get sick when a virus is in one cell,” he noted. “You get sick because a virus replicates itself and goes into many more cells.”
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The study, which was published in The Journal of Virology, originally aimed to map how viral RNA segments are transported within cells to create new viral particles.
The team used H1N1 and H3N2 viruses isolated from the nasal passages of positive patients in 2022.
Clinical treatments remain identical for both primary strains of the flu virus. (iStock)
During the investigation, the team unexpectedly stumbled upon a cellular pathway that blocked the virus from entering lung cells, SWNS reported.
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The data revealed that when a specific human protein called Rab11B was depleted, H3N2 viruses failed to enter human lung cells. H1N1 viruses were completely unaffected.
Using reverse genetics, the team mapped this defect and uncovered a brand-new, H3N2-specific role for Rab11B during viral entry.
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This discovery challenged the scientific assumption that all flu viruses enter cells the same way.
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“Viruses are like pirates from different countries hijacking someone’s ship,” Bruce said. “Different viruses, like different types of pirates, use different methods to get onboard.”
This discovery challenged the scientific assumption that all flu viruses enter cells the same way. (iStock)
“We had previously thought that all flu viruses used the same way to get into a cell, but we discovered that this is not true,” she went on. “H1N1 and H3N2 need different proteins to get in, and if you get rid of the right protein, a specific virus can’t get in.”
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While these findings identify a critical cellular pathway for viral entry, the study was conducted using isolated cells, the researchers acknowledged.
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Further research is needed to determine whether blocking the protein is safe and effective within a live, complex human respiratory system.
Bruce and the team hope to conduct further research to determine whether this Rab11B-dependency is a fundamental property of H3N2, or if it’s a trait unique to currently circulating flu strains.
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Eating processed meat like ham, sausage and bacon may be linked to a higher risk of certain types of cancer, according to new research.
While health organizations have already confirmed that processed meat can contribute to colon cancer, this study looked closer at cancers in the upper digestive tract, where the link has historically been less clear.
To understand these connections, researchers from the European Prospective Investigation into Cancer and Nutrition (EPIC), one of the world’s largest long-term nutrition and cancer cohorts, tracked the health and diets of 450,112 people across Europe for an average of 14 years.
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The study group included 131,426 men and 318,686 women, according to the study’s press release.
During the follow-up period, 876 people developed stomach cancer and 215 people developed esophageal adenocarcinoma, which is cancer of the tube connecting the mouth to the stomach.
For female participants, eating both processed meat and white meat was linked to an increased risk of developing the disease. (iStock)
Researchers tracked where the stomach cancers grew, separating them into the upper part of the stomach near the throat and the lower part of the stomach.
The researchers also sorted the tumors into two categories based on how the cancer cells appeared under a microscope: intestinal, which forms more organized structures, and diffuse, in which the cells are more scattered throughout the tissue.
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After adjusting for other lifestyle factors, the researchers found that for every extra 30 grams of processed meat a person ate per day, their overall risk of stomach cancer went up by 9%. Eating that same extra 30 grams a day was also linked to a 13% higher risk of esophageal adenocarcinoma.
A standard single slice of regular deli-sliced ham or lunch meat averages around 28 grams, according to USDA data and nutritional tracking databases.
An extra 20 grams of white meat, such as chicken and turkey, was linked to a 12% higher risk of cancer in the main body of the stomach. (iStock)
An extra 20 grams of white meat, such as chicken or turkey, was linked to a 12% higher risk of cancer in the main body of the stomach, the researchers noted.
The study also revealed differences between men and women. For male participants, only processed meat showed a clear, statistically significant link to a higher risk of stomach cancer. For female participants, however, eating both processed meat and white meat was linked to an increased risk.
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These findings align with global health benchmarks, particularly those established by the World Health Organization’s International Agency for Research on Cancer.
The agency has long classified processed meat as a known human carcinogen, primarily due to its strong, well-documented links to colorectal cancer.
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However, health organizations have also consistently pointed to a potential, yet less definitive, relationship between these meats and cancers of the stomach.
Eating 30 grams of processed meat a day, or the equivalent to one slice of ham, was linked to a 13% higher risk of esophageal adenocarcinoma. (iStock)
Further scientific investigation is needed to confirm the findings and to account for other underlying risk factors, such as certain stomach infections, which could interact with dietary habits.
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A key limitation of the study is its reliance on self-reported diets, which can sometimes lead to inaccuracies in how participants recall their meat consumption over time, the researchers noted.
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The findings were published in the International Journal of Cancer.
Fox News Digital reached out to the researchers requesting comment.
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