Health
Study Links Gut Bacteria to Increased Risk of Insomnia
A new study has found that certain bacteria in the gut may play a direct role in causing insomnia, suggesting that chronic sleeplessness could be linked to more than just lifestyle factors or stress.
The research, published in General Psychiatry, examined genetic and microbiome data from large groups of people and found evidence of a two-way relationship between the condition and the gut microbiome — the community of bacteria, fungi, and viruses that naturally live in the body.
Insomnia, which affects about 10% of adults regularly and up to 20% occasionally, is typically associated with causes such as stress, caffeine, alcohol consumption, medical conditions, or side effects from medication. Symptoms include difficulty falling asleep, poor sleep quality, and daytime problems such as irritability or fatigue.
While previous studies have suggested a link between gut health and sleep through the so-called gut–brain axis, this latest research offers “preliminary evidence” that the composition of gut bacteria can actively influence the risk of developing insomnia.
Researchers analysed genetic data from nearly 387,000 people with insomnia and microbiome data from around 27,000 individuals. They identified 14 groups of bacteria that increased insomnia risk by 1–4%, and eight groups that lowered the risk by 1–3%. People with insomnia had significantly reduced levels of seven types of bacteria and increased levels of 12 others.
The exact reasons behind the connection remain unclear. One theory suggests that insomnia alters the body’s levels of serotonin and dopamine — key neurotransmitters involved in sleep regulation — which may, in turn, influence gut bacteria. Other possible explanations include immune system regulation, inflammation, and various molecular and cellular mechanisms.
“The intertwined effects of insomnia on gut microbiota, and vice versa, represent a complex bidirectional relationship,” the study authors wrote.
The findings also highlight the possibility of developing microbiome-based treatments for insomnia, such as probiotics, prebiotics, or even faecal microbiota transplants. However, the researchers caution that more work is needed before such interventions could be recommended.
The study has limitations. Most participants were of European descent, meaning the results may not be applicable to all populations. In addition, dietary and lifestyle factors — both of which can influence gut health — were not fully accounted for in the analysis.
Despite these caveats, experts say the research strengthens the case for looking beyond conventional causes of insomnia and exploring how internal biological systems, particularly the gut, can influence sleep. If future studies confirm the findings, it could mark a shift in how chronic insomnia is treated, offering new hope to millions of people worldwide who struggle to get a good night’s rest.
Health
World Cup Emotion Can Strain the Heart, Cardiologists Warn Fans at Risk
As the World Cup begins, medical experts are cautioning football fans with underlying heart conditions that the emotional intensity of matches can place unexpected strain on the cardiovascular system.
Cardiologists say that the excitement, tension, and anxiety generated during high-stakes games can trigger physical reactions similar to intense exercise, raising heart rate, blood pressure, and stress hormones.
“Intense emotions, whether positive or negative, can act as ‘precipitating risk factors’ for cardiovascular events such as heart attack,” said Paola Santalucia, a cardiologist and board member of the European Heart Network.
She explained that moments of extreme excitement, such as a decisive penalty shootout or a last-minute goal, may pose risks for people already living with heart disease. Those with additional risk factors, including hypertension, obesity, or smoking habits, are also advised to be cautious during emotionally charged matches.
Research using wearable devices has shown that during major football events, some fans experience heart rates climbing as high as 150 beats per minute. That level is comparable to sprinting and reflects how strongly the body reacts to emotional stress.
A study examining supporters during the 2025 German Cup final found that even watching from home can significantly affect physiological responses. “They still had an increase in heart rate that compares to walking, even though they didn’t walk,” said Christian Deutscher, professor of sports economics at Bielefeld University and co-author of the study.
He noted that the most intense reactions often occur not during goals themselves, but during moments of uncertainty such as VAR checks, penalty shootouts, or shots striking the post. These unpredictable situations, he said, are what drive the strongest emotional and physical responses among fans.
Deutscher also pointed out that stadium spectators may experience even greater strain due to environmental factors such as heat and alcohol consumption.
However, experts emphasize that football itself is not inherently dangerous. Instead, it is the body’s natural response to excitement that can create temporary stress.
“The adrenergic stimulation is at its max: extreme high blood pressure, high heart rate, and adrenaline, cortisol, skyrocketing,” said Dan Atar, professor of cardiology at Oslo University Hospital. In rare cases, he added, this surge can contribute to the rupture of arterial plaque in vulnerable individuals, potentially leading to a heart attack.
Atar stressed that such events can occur in everyday situations as well, including physical exertion like shoveling snow. “It is in no way dangerous to watch a football game,” he said. “All this is physiologic. It’s not dangerous to be excited.”
Still, he acknowledged that combining emotional stress with alcohol, heat, and pre-existing conditions can increase risk for some viewers.
Doctors advise those at higher risk to continue prescribed medications, limit alcohol intake, avoid smoking, and watch for warning signs such as chest pain or irregular heartbeat.
“The key message is not to avoid enjoying the match, but to do so with moderation and awareness,” Santalucia said.
Health
AI Models Show Ability to Mimic Human Emotions, Offering New Pathways for Mental Health Research
Health
AI Saves Clinicians Weeks of Work but Health Systems Struggle to Keep Up, Philips Report Finds
-
Entertainment2 years agoMeta Acquires Tilda Swinton VR Doc ‘Impulse: Playing With Reality’
-
Sports2 years agoChina’s Historic Olympic Victory Sparks National Pride Amid Controversy
-
Business2 years agoSaudi Arabia’s Model for Sustainable Aviation Practices
-
Business2 years agoRecent Developments in Small Business Taxes
-
Home Improvement2 years agoEffective Drain Cleaning: A Key to a Healthy Plumbing System
-
Politics2 years agoWho was Ebrahim Raisi and his status in Iranian Politics?
-
Sports2 years agoKeely Hodgkinson Wins Britain’s First Athletics Gold at Paris Olympics in 800m
-
Business2 years agoCarrectly: Revolutionizing Car Care in Chicago
