Health
Long COVID could be the cause of your bad hangovers, study finds: 'Bad reaction'
Drinking too much is often a recipe for a morning-after disaster.
But for long COVID patients, hangover symptoms might be much worse, according to research.
A small study by Stanford University, which was published in the journal Cureus, examined alcohol sensitivity in four people with post-acute sequelae of SARS-CoV-2 (PASC), or long COVID.
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Two patients reported worse headaches after drinking the same amount of alcohol they would have consumed prior to having COVID.
One patient, a 40-year-old woman with a history of Ehlers-Danlos syndrome type III, asthma, anemia, hypotension and migraines, claimed that she could tolerate seven mixed drinks containing hard liquor in one night before long COVID struck.
For long COVID patients, hangover symptoms might be much worse, according to new research from Stanford University. (iStock)
But ever since getting COVID, the woman reported that her hangovers feel like she “suffers from alcohol poisoning after drinking even small amounts of alcohol and feels ‘terrible’ for several days after consumption,” the study reported.
The woman noted that her tolerance had decreased so significantly that one beer would result in a “severe hangover, along with exacerbation of PASC symptoms for three days thereafter.”
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Another patient, a 49-year-old woman with a history of type 1 diabetes, celiac disease controlled by diet, and breast cancer — who consumes several drinks per week — said she noticed a decreased alcohol tolerance after her COVID infection.
After drinking just one glass of wine, she reported experiencing “such a bad reaction that she felt she could not move,” the researchers noted.
Some patients reported having worse headaches after drinking the same amount of alcohol they would have consumed prior to having COVID. (iStock)
The woman described her symptoms as “similar to a bad hangover, with a headache, grogginess and ‘overwhelming’ fatigue the next day.”
The research concluded that new-onset alcohol reactions and sensitivity can occur after COVID-19 infection in patients with PASC.
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“Clinicians assessing PASC patients should inquire about alcohol consumption and tolerance in their social history, as this information can provide insights into potential triggers for worsening symptoms and help guide lifestyle management strategies,” the study suggested.
Stanford Internal Medicine director and study co-author Linda Geng noted how “the clinical observations from this paper raise important questions about the link between long COVID and alcohol sensitivity,” as provided in a statement sent to Fox News Digital.
The research concluded that new-onset alcohol reactions and sensitivity can occur after COVID-19 infection in patients with PASC. (iStock)
“Studying this further might provide insights about the mechanism(s) of long COVID and other post-viral syndromes,” she said.
“Additionally, patients with long COVID should be cautious about the use of alcohol, and some may feel better if they avoid it altogether.”
“Alcohol can worsen the post-COVID symptoms.”
Fox News medical contributor Dr. Marc Siegel, who was not involved in the study, noted that although this research surveyed only four patients, he also has recognized an increased sensitivity to alcohol in some of his own PASC patients.
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“[This study] builds on previous research that in the case of post-viral syndromes (including mononucleosis), sensitivity to alcohol can increase,” Siegel said via email to Fox News Digital.
“I have seen this in some of my patients with post-COVID syndromes,” he went on. “The symptoms are similar: headache, nausea, fatigue, body aches. And alcohol can worsen the post-COVID symptoms.”
Siegel explained that both post-COVID symptoms and alcohol can “lead to inflammation and affect the immune system.”
“And recent research shows that COVID can lead to some leakiness in the blood brain barrier so that inflammatory chemicals (including those from alcohol) can get into the brain at least temporarily, causing headache, nausea and dizziness,” he said.
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Bala Munipalli, M.D., an internist at Mayo Clinic in Florida, also weighed in on this study, noting to Fox News Digital that post-viral persistence of symptoms is “not unique to COVID-19.”
Munipalli was also not involved in the study.
“We have seen this occurring since the 1918 Spanish flu, and saw it with SARS-CoV-1 in 2003 and with Middle Eastern Respiratory Syndrome (MERS) in 2012,” she said.
“Recent research shows that COVID can lead to some leakiness in the blood brain barrier so that inflammatory chemicals (including those from alcohol) can get into the brain at least temporarily, causing headache, nausea and dizziness,” a doctor said. (iStock)
“Individuals with PASC have shared symptoms with ME/CFS, fibromyalgia, mast cell activation syndrome, and dysautonomia: fatigue, brain fog, un-refreshing sleep, myalgias, and food and medication sensitivities,” Munipalli added.
In each of the syndromes mentioned, Munipalli detailed how the brain processes sensory input faster, causing the sensory signals to become “amplified and more widespread as more areas of the brain become activated.”
“This results in the central nervous system becoming sensitized,” she said. “And I suspect this is what is happening with patients who have PASC and demonstrate alcohol sensitivity.”
Anyone experiencing symptoms of alcohol use disorder should seek help from a doctor, therapist or counselor, experts recommend.
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A popular class of weight-loss drugs may prevent life-threatening cardiac complications by opening microscopic blood vessels that often remain blocked after a heart attack, according to a study published this week in Nature Communications.
The research, led by the University of Bristol and University College London, identified a biological brain-gut-heart signaling pathway.
This discovery appears to explain how GLP-1 drugs — which mimic glucagon-like peptide-1, a hormone that helps regulate blood sugar and appetite — protect heart tissue from a condition known as “no-reflow.”
“In nearly half of all heart attack patients, tiny blood vessels within the heart muscle remain narrowed, even after the main artery is cleared during emergency medical treatment,” Dr. Svetlana Mastitskaya, the study’s lead author and a senior lecturer at Bristol Medical School, said in a press release.
“This results in a complication known as ‘no-reflow,’ where blood is unable to reach certain parts of the heart tissue.”
In nearly half of all heart attack patients, tiny capillaries (blood vessels) remain narrowed even after the main blocked artery is cleared. (iStock)
This lack of blood flow increases the risk of heart failure and death within a year. GLP-1 medications could prevent this, according to the researchers.
How it works
When the GLP-1 hormone is released in the gut or administered as a drug, it sends a signal to the brain, which then sends a signal to the heart that switches on special potassium channels in tiny cells called pericytes.
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When these channels open, the pericytes relax, which allows the small blood vessels (capillaries) to widen and improve blood flow to the heart muscle, the researchers noted.
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The new study used animal models and cellular imaging to track how GLP-1 interacts with heart tissue. When the researchers removed the potassium channels, the drugs no longer protected the heart — confirming they play a key role.
The findings suggest that existing GLP-1 medications, already used for type 2 diabetes and obesity, could be repurposed as emergency treatments. (iStock)
The findings suggest that existing GLP-1 medications, already used for type 2 diabetes and obesity, could be repurposed as emergency treatments during or immediately after a heart attack to reduce tissue damage.
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The researchers noted several limitations, including that the study relied on animal models.
Clinical trials are necessary to determine whether the brain-gut-heart pathway operates with the same timing and efficacy in humans.
While the study highlights the drug’s immediate benefits during a heart attack, it des not establish whether long-term use of these drugs provides a pre-existing level of protection. (iStock)
Additionally, while the study highlights the drug’s immediate benefits during a heart attack, it does not establish whether long-term use of the medication provides a pre-existing level of protection.
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The research was primarily funded by the British Heart Foundation.
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Collagen supplements have exploded in popularity, touted as everything from an anti-aging miracle to a muscle recovery booster.
But a sweeping new review conducted by U.K. researchers suggests that while collagen may help improve skin elasticity and ease arthritis pain, it does little for athletic performance or wrinkle reduction.
Researchers from Anglia Ruskin University analyzed 16 systematic reviews and 113 randomized controlled trials involving nearly 8,000 participants worldwide, which they say is the most extensive evaluation of collagen’s health effects to date.
The review found consistent evidence that collagen supplementation improves skin elasticity and hydration over time and provides significant relief from osteoarthritis-related joint pain and stiffness, according to findings published in Aesthetic Surgery Journal Open Forum.
A large U.K. review found that collagen supplements may improve skin elasticity and hydration over time. (iStock)
The researchers, however, did not find meaningful improvements in post-exercise muscle recovery, soreness or tendon mechanical properties (strength, springiness and stretch resistance).
“Collagen is not a cure-all, but it does have credible benefits when used consistently over time, particularly for skin and osteoarthritis,” co-author Lee Smith, professor of public health at Anglia Ruskin University, said in a statement.
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“Our findings show clear benefits in key areas of healthy aging, while also dispelling some of the myths surrounding its use,” Smith added.
Collagen, the most abundant protein in the body, supports skin, bones, tendons, cartilage and connective tissue, according to experts. Natural collagen production begins to drop in early adulthood and declines more sharply with age.
The study found that collagen supplements may help reduce joint pain and stiffness in people with osteoarthritis. (iStock)
The review found that long-term collagen supplementation was linked to improved skin firmness and hydration, but did not help skin roughness — a proxy for visible wrinkles.
Benefits appear to accumulate gradually, suggesting that collagen should not be viewed as an “anti-wrinkle ‘quick fix,’ but as a foundational dermal support for individuals seeking holistic skin maintenance,” the researchers said.
“If we define anti-aging as a product or technique designed to prevent the appearance of getting older, then I believe our findings do support this claim for some parameters,” Smith told the BBC. “For example, an improvement in skin tone and moisture is associated with a more youthful-looking appearance.”
Collagen supplementation was linked to reduced pain and stiffness in people with osteoarthritis, with stronger benefits seen over longer periods of use, and showed modest improvements in muscle mass and tendon structure that may support healthy aging.
Collagen did not significantly improve skin roughness, a marker of visible wrinkles. (iStock)
However, it did not show meaningful results when used as a fast-acting sports performance supplement, and evidence for benefits related to cholesterol, blood sugar, blood pressure and oral health was mixed or inconclusive.
Dr. Daniel Ghiyam, a California-based physician and longevity specialist, said the findings align with what he sees in clinical practice.
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“Collagen is a targeted support tool, not a foundation of health or performance,” Ghiyam, who was not involved in the study, told Fox News Digital. “When marketed that way, it makes sense. When marketed as a cure-all, it doesn’t hold up to the data.”
The authors noted that while many previous collagen studies have received financial support from the supplement industry, the current review did not receive industry funding.
Experts say collagen supplements may offer modest benefits for skin hydration and joint comfort, but they are not a cure-all. (iStock)
The team called for more high-quality clinical trials examining long-term outcomes, optimal dosages and differences between collagen sources, such as marine, bovine and plant-based alternatives.
Among its limitations, the review could not determine whether certain forms of collagen work better than others or what the optimal regimen should be.
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While the review included randomized controlled trials, the quality of the studies varied, with newer research generally showing stronger results.
Experts say more data and studies are needed to build on the findings. They also noted that diet plays a crucial role in skin health.
Collagen supplements, often sold as powders or pills, may improve skin elasticity and ease joint pain, experts say. (iStock)
Dr. Erum Ilyas, a Pennsylvania-based dermatologist and chair of dermatology at Drexel University College of Medicine, noted that the review analyzed previously published meta-analyses rather than generating new primary data.
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“At this time, I have not seen sufficiently strong independent evidence to routinely recommend collagen supplements to my patients,” Ilyas, who was not involved in the review, told Fox News Digital.
“Although some studies show modest improvements in markers such as hydration and elasticity, there remains limited independent, biopsy-confirmed evidence demonstrating sustained increases in dermal collagen content,” she added.
Fox News Digital has reached out to the researchers for comment.
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