Latest news with #L.asaccharolyticus
The Age
3 days ago
- Health
- The Age
Drinking coffee linked to better ageing in women, new study finds
Along with the immediate sharpening many experience after drinking coffee, caffeine consumption has been found in multiple studies to enhance brain function, particularly short-term or 'working memory'. According to an analysis published in Neuroscience & Biobehavioural Reviews, 'the scientific consensus regarding basic cognitive functions is that caffeine in doses from 32 to 300 mg enhances fundamental aspects of cognitive performance, such as attention, vigilance, and reaction time'. This is thought to be due to caffeine blocking the adenosine receptors in the brain, which temporarily heightens memory and alertness. Coffee is also rich in polyphenols, 'a group of antioxidants and particularly chlorogenic acids (naturally occurring compounds that appear in plants such as coffee and tea) that are linked to many brain health benefits,' says Dr Emily Leeming, a nutritionist and author of Genius Gut: The Life-Changing Science of Eating for Your Second Brain. Loading These polyphenols are believed to be protective against Alzheimer's, the most common form of dementia. A 2023 meta-analysis published by scientists at Inje University in South Korea highlighted that for those who drank fewer than four cups a day, polyphenols 'may contribute to the prevention of neurodegeneration and cognitive decline'. Caffeine has also been shown to reduce amyloid-beta production and tau phosphorylation – key pathological hallmarks of Alzheimer's. Dr Gill Livingston, professor in psychiatry of older people at University College London, says that of the studies undertaken to date, 'the jury is still out but [caffeine] does not seem to harm you'. 2. It contains good bacteria that boost your gut health The polyphenols in coffee also act as 'potential prebiotics for your gut microbes,' Leeming says, boosting their growth and motility, and creating favourable conditions for other good bacteria to flourish. Research from ZOE, the nutrition app, found that coffee had the strongest food-microbiome association of 150 consumables they surveyed. Coffee drinkers had six to eight times more L. asaccharolyticus in their microbiome – a bacteria which also led to increased levels of hippurate, a key marker of metabolic and gut health. Leeming also points out that while much has been made of the potential upsides of coffee drinking, caffeine can be deleterious for our health if consumed too late in the day. She advises drinking it no later than noon, 'as caffeine floats around in our bloodstream long after the buzz has worn off, and can lead to a lower quality of sleep, even for those who have no problem getting to sleep after an evening espresso'. Poor sleep has repeatedly been found to increase mortality risk. There are concerns too that, as a high-caffeine diet increases the amount of calcium lost via urine, bone density could diminish if enough replacement calcium is not consumed. The Royal Osteoporosis Society advises that, 'if your calcium intake is low, or you have other risk factors for osteoporosis, aim to have no more than four cups of coffee a day'. 3. Coffee drinkers have improved heart health, studies show A study by Queen Mary University of London and the Budapest Semmelweis University in 2022 found that up to three cups of coffee a day had a protective effect on heart health, and led to a reduction in overall mortality rate and risk of stroke. Research published in the European Heart Journal in January, meanwhile, showed that morning coffee consumption was associated with improved heart health. Compared to non-coffee drinkers, those who consumed theirs in the morning were 16 per cent less likely to die of any cause, and 31 per cent less likely to die of cardiovascular disease. According to Tracy Parker, a senior dietitian at the British Heart Foundation, 'research shows that drinking moderate amounts of caffeine – up to four or five cups of coffee a day – doesn't seem to have a negative impact on the heart and should be fine for most people.' But she warns that excessive consumption (above the recommended 400mg daily), 'can lead to temporary increases in blood pressure and heart rate, as well as side effects like palpitations, anxiety, nausea and headaches.' Leeming also adds that 'not everyone reacts well to coffee. It can cause jitters, or digestive issues in some people.'
Sydney Morning Herald
3 days ago
- Health
- Sydney Morning Herald
Drinking coffee linked to better ageing in women, new study finds
Along with the immediate sharpening many experience after drinking coffee, caffeine consumption has been found in multiple studies to enhance brain function, particularly short-term or 'working memory'. According to an analysis published in Neuroscience & Biobehavioural Reviews, 'the scientific consensus regarding basic cognitive functions is that caffeine in doses from 32 to 300 mg enhances fundamental aspects of cognitive performance, such as attention, vigilance, and reaction time'. This is thought to be due to caffeine blocking the adenosine receptors in the brain, which temporarily heightens memory and alertness. Coffee is also rich in polyphenols, 'a group of antioxidants and particularly chlorogenic acids (naturally occurring compounds that appear in plants such as coffee and tea) that are linked to many brain health benefits,' says Dr Emily Leeming, a nutritionist and author of Genius Gut: The Life-Changing Science of Eating for Your Second Brain. Loading These polyphenols are believed to be protective against Alzheimer's, the most common form of dementia. A 2023 meta-analysis published by scientists at Inje University in South Korea highlighted that for those who drank fewer than four cups a day, polyphenols 'may contribute to the prevention of neurodegeneration and cognitive decline'. Caffeine has also been shown to reduce amyloid-beta production and tau phosphorylation – key pathological hallmarks of Alzheimer's. Dr Gill Livingston, professor in psychiatry of older people at University College London, says that of the studies undertaken to date, 'the jury is still out but [caffeine] does not seem to harm you'. 2. It contains good bacteria that boost your gut health The polyphenols in coffee also act as 'potential prebiotics for your gut microbes,' Leeming says, boosting their growth and motility, and creating favourable conditions for other good bacteria to flourish. Research from ZOE, the nutrition app, found that coffee had the strongest food-microbiome association of 150 consumables they surveyed. Coffee drinkers had six to eight times more L. asaccharolyticus in their microbiome – a bacteria which also led to increased levels of hippurate, a key marker of metabolic and gut health. Leeming also points out that while much has been made of the potential upsides of coffee drinking, caffeine can be deleterious for our health if consumed too late in the day. She advises drinking it no later than noon, 'as caffeine floats around in our bloodstream long after the buzz has worn off, and can lead to a lower quality of sleep, even for those who have no problem getting to sleep after an evening espresso'. Poor sleep has repeatedly been found to increase mortality risk. There are concerns too that, as a high-caffeine diet increases the amount of calcium lost via urine, bone density could diminish if enough replacement calcium is not consumed. The Royal Osteoporosis Society advises that, 'if your calcium intake is low, or you have other risk factors for osteoporosis, aim to have no more than four cups of coffee a day'. 3. Coffee drinkers have improved heart health, studies show A study by Queen Mary University of London and the Budapest Semmelweis University in 2022 found that up to three cups of coffee a day had a protective effect on heart health, and led to a reduction in overall mortality rate and risk of stroke. Research published in the European Heart Journal in January, meanwhile, showed that morning coffee consumption was associated with improved heart health. Compared to non-coffee drinkers, those who consumed theirs in the morning were 16 per cent less likely to die of any cause, and 31 per cent less likely to die of cardiovascular disease. According to Tracy Parker, a senior dietitian at the British Heart Foundation, 'research shows that drinking moderate amounts of caffeine – up to four or five cups of coffee a day – doesn't seem to have a negative impact on the heart and should be fine for most people.' But she warns that excessive consumption (above the recommended 400mg daily), 'can lead to temporary increases in blood pressure and heart rate, as well as side effects like palpitations, anxiety, nausea and headaches.' Leeming also adds that 'not everyone reacts well to coffee. It can cause jitters, or digestive issues in some people.'
Gulf News
03-05-2025
- Health
- Gulf News
Cup half-full: How drinking coffee could improve your gut health
Coffee lovers always knew they were on the winning team. In a world where health trends shift by the minute, they're the first to say, 'See? Told you so,' whenever new research praises coffee. The claims about coffee's benefits are so wide-ranging, it can almost sound like a magical elixir. Haircare? Yes—scientists have found evidence that coffee might stimulate hair growth. So yes, go ahead and sip that cup of Joe for stronger strands. Live longer? Hand that cup of coffee right away! Skincare? We're getting there. Coffee is packed with stellar ingredients that have been extensively studied, making it feel like it could save you from just about everything. And now, the spotlight is on gut health. The many joys of coffee It gives you a jolt for sure, but there's more bubbling beneath the surface. It contains polyphenols, which are plant-based compounds that act like antioxidants. These same polyphenols also have prebiotic effects, meaning they help feed the good bacteria in your gut. Yes, your flat white might be quietly cheering on your microbiome. According to researchers, coffee consumption has been linked to a higher diversity of gut bacteria, especially the kind that are associated with anti-inflammatory effects. A more diverse microbiome often translates to better digestion, immune function, and even mood regulation. How coffee helps the gut In 2024, new research made headlines. A study by ZOE, published in Nature Microbiology, analyzed data from over 22,000 people across 25 countries. The results showed that coffee drinkers had distinct gut bacteria profiles compared to non-drinkers. One bacterium, Lawsonibacter asaccharolyticus, stood out, appearing 6 to 8 times more in coffee drinkers. Moreover, this boost occurred regardless of whether participants drank regular or decaf coffee. This suggests it's not the caffeine, but rather compounds like chlorogenic acid (a type of polyphenol), that play a role. Further lab tests confirmed that coffee helps L. asaccharolyticus thrive. This bacterium then breaks down coffee's polyphenols into useful byproducts like quinic acid and hippurate—both linked to antioxidant effects and reduced inflammation. In short, your morning brew may be quietly fine-tuning your gut. But, what about acid and bloating? That said, coffee isn't everyone's cup of tea. As Sharifa Khan, a Dubai-based dietician says, For those with sensitive stomachs, coffee, specially on an empty stomach, can lead to acid reflux, bloating, or discomfort. This isn't just anecdotal. Studies confirm that coffee stimulates gastric acid secretion. A 2010 review in Molecular Nutrition & Food Research notes that while coffee doesn't cause ulcers, it can aggravate symptoms in those with existing digestive conditions, such as gastroesophageal reflux disease (GERD) or irritable bowel syndrome (IBS). It's not just the caffeine—though that plays a role—it's also other compounds like catechols and N-alkanoyl-5-hydroxytryptamides, which increase stomach acid production. A study published in Alimentary Pharmacology & Therapeutics (2004) found that coffee consumption significantly reduced lower esophageal sphincter pressure, making acid reflux more likely in susceptible individuals. So, what can you do if you love coffee but your gut doesn't? You need to know your personal tolerance. If not, you don't have to give it up entirely. Consider: Switching to low-acid coffee varieties: Made from beans processed to reduce acidity. Opting for cold brew, which is naturally lower in acid due to its brewing method. Drinking coffee after a meal, which helps buffer its acidic effects on the stomach lining. Coffee and fibre: A solid combination Here's a lesser-known fact: coffee contains a small amount of soluble fibre, as Khan says. It's not enough to replace your fruits and veggies, but it can add a little support to your daily intake. That fiber, combined with the prebiotic polyphenols, can create an environment that promotes good bacteria. Pair your cup with high-fibre snacks like oats, bananas, or almonds, and you're giving your gut a gentle nudge toward wellness. So, if coffee makes you feel good, both mentally and physically, you're likely doing something right. Its impact on gut health is still being studied, but early research shows a clear trend: moderate coffee drinking is associated with better gut diversity and improved bowel movement patterns.
Yahoo
16-03-2025
- Health
- Yahoo
A New Study Found That This Morning Beverage Can Improve Your Gut Health Almost Instantly
"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Sipping on a cup of joe is an easy way to infuse some much-need pleasure into a hectic morning or slow afternoon at work. But a growing body of research suggests that coffee might do your physical health a solid, too, even helping your gut cultivate some great bacteria. A new study, which was published in Nature Microbiogy, found that a coffee habit is linked with a certain type of bacteria growth that's believed to boost your gut health. However, the link is a little complicated. So, with that in mind, here's what the study found, plus what doctors want you to know. Meet the experts: Danbee Kim, MD, nutrition expert, weight loss surgeon, and assistant professor at Rutgers New Jersey Medical School; Nicola Segata, PhD, study co-author, professor, and principal investigator at the CIBIO Department of the University of Trento; Rudolph Bedford, MD, a gastroenterologist at Providence Saint John's Health Center in Santa Monica, CA For the study, researchers analyzed fecal (i.e. poop) data from more than 20,000 people and tracked how much coffee they consumed on a daily basis. The researchers found that people who regularly drank coffee also had a bacterium called Lawsonibacter asaccharolyticus in their gut. 'People who drink coffee, on average, have a six to eight times higher amount of this bacterium in the gut,' says Nicola Segata, PhD, study co-author, professor, and principal investigator at the CIBIO Department of the University of Trento. We don't actually know a ton about L. asaccharolyticus. The bacterium was first identified in research in 2018. It produces butyrate, a sign of gut fermentation that suggests good digestion and nutrient absorption, Segata explains. "It's probably producing short-chain fatty acids, which are supposed to be positive modulators of immunity,' Segata adds. Still, he says that 'strong data' is needed to learn more about what this actually does for your gut health. What he does know is that there's a solid link between coffee consumption and the presence of L. asaccharolyticus. Segata and fellow researchers actually fed coffee to L. asaccharolyticus that was growing in petri dishes and found it made the bacteria grow faster. 'It's clear that the coffee was stimulating it,' Segata says. This stimulation is possibly due to metabolites in the coffee. Plus, it's 'probably not the caffeine, because decaf had a similar effect," Segata adds. As of now, this bacterium is just linked to coffee. However, aronia berries contain chlorogenic acid and polyphenols like coffee, so they may have a similar effect, says Danbee Kim, MD, nutrition expert, weight loss surgeon, and assistant professor at Rutgers New Jersey Medical School. 'Other foods high in chlorogenic acid—such as blueberries, apples, and pears—might also support the growth of this gut bacteria, though more research is needed to confirm this,' she says. Having a cup or two of coffee a day promotes the growth of Segata says. But he points out that 'heavy' coffee drinkers, who have three or more coffees a day, have up to 10 times more of the bacteria in their gut compared to people who don't drink coffee. There are a few to keep in mind. The biggest potential drawback is that it could raise your risk of acid reflux, says Rudolph Bedford, MD, a gastroenterologist at Providence Saint John's Health Center in Santa Monica, CA. 'It also increases gastrointestinal mobility and can potentially cause diarrhea,' he says. But, overall, Bedford says that coffee is considered a relatively safe drink for people, provided they don't overdo it on the caffeine. You Might Also Like Jennifer Garner Swears By This Retinol Eye Cream These New Kicks Will Help You Smash Your Cross-Training Goals
Yahoo
09-03-2025
- Health
- Yahoo
Scientists Just Discovered a Huge Health Benefit of Coffee
As if coffee drinkers needed another excuse to keep brewing their favorite cup, new research suggests that coffee is beneficial for gut health. Known for its antioxidant and anti-inflammatory properties, coffee has long been touted for its many health benefits. In fact, thousands of compounds are packed into every cup, helping to improve mental alertness, reduce inflammation, support heart health, and even ease post-workout pain. A recent study published in Nature Microbiology reveals a new benefit of coffee: It supports the growth of beneficial gut bacteria. In this study, researchers analyzed stool samples from 22,867 participants to understand the impact of coffee on gut bacteria. They categorized participants into three groups: the 'never' group (those who drink fewer than three cups per month), 'moderate' coffee drinkers (those who consumed at least three cups per month up to three cups a day), and 'heavy' coffee drinkers (those who drink three or more cups per day). Related: The Real Reason You Shouldn't Order Coffee or Tea on an Airplane The researchers found that coffee drinkers had high levels of one specific bacteria strain, L. asaccharolyticus. The results suggest that drinking coffee can have a positive effect on your gut by helping the growth of good bacteria — an exciting win for coffee drinkers. 'It turns out that the microbiome in the gut is probably way more important than we even ever expected,' says Michael Caplan, MD, clinical professor at the University of Chicago and chief scientific officer at Endeavor Health. He explains that the beneficial bacteria in our gut are essential to our overall health, and having a diverse microbiome is crucial. A healthy gut can help prevent traveler's diarrhea, antibiotic-induced diarrhea, and may even play a role in managing obesity, heart disease, and chemotherapy outcomes, according to Caplan. Our gut also houses the majority of our immune cells, making it vital to protect and maintain its strength. A healthy gut also supports digestion, reduces inflammation, and influences our thoughts. Have you ever felt nervous and noticed your gut starting to feel uneasy? Our gut and brain are closely intertwined. Dr. Chaplan points out that it's actually not only the caffeine that boosts the beneficial bacteria, as even drinking decaf coffee has a positive effect on our gut. The key contributors are likely the polyphenols, including chlorogenic acid and quinic acid, found in coffee, which help boost the growth of this beneficial bacteria. Science suggests that polyphenols act like prebiotics. They feed and encourage the growth of beneficial gut bacteria. As with any new discovery, further research is needed, especially when it comes to the potential of L. saccharolytic. Dr. Chaplan explains that this bacteria strain has only been identified in the past five years, so we don't yet fully understand how it contributes to health benefits. Could it help reduce mortality or improve outcomes in heart disease or cancer? More research is needed to understand how this bacteria could contribute to reducing disease and improving health. 'It's very safe to have one or two cups of coffee a day, and that would be enough to stimulate your intestinal flora to be poised to help you improve your long-term health,' says Dr. Caplan. This aligns with FDA recommendations, which keep caffeine intake to no more than 400 milligrams a day or about four cups of brewed coffee. Related: A New Study Says Morning Coffee Drinkers May Get More Benefits Than Those Who Sip It All Day And good news for those who love a little splash of milk or sprinkle of sugar in their coffee, the study showed that these additions don't affect the gut health benefits. This new research is exciting news for coffee drinkers, as coffee has yet to be linked to improved gut health. But don't forget about other foods and drinks that can also support a healthy gut, such as yogurt, kefir, fermented foods like kefir, kimchi and sauerkraut, and kombucha. Read the original article on Food & Wine
