A stomach virus, often colloquially referred to as the "stomach flu" or "stomach bug," is a microscopic organism that infects your digestive system. Unlike the common flu, which is caused by a respiratory virus, stomach viruses target the gastrointestinal tract. These viruses can cause inflammation and irritation of the stomach and intestines, leading to a range of unpleasant symptoms.

It's important to note that stomach viruses are not caused by bacteria. While bacteria can also cause food poisoning or other gastrointestinal illnesses, viruses are a different type of infectious agent. This distinction is crucial because antibiotics, which are effective against bacterial infections, are ineffective against viruses.

What are Some Common Stomach Viruses?

Norovirus, a highly contagious virus, is notorious for causing outbreaks in communal settings like schools, hospitals, and cruise ships. It can lead to severe vomiting and diarrhea, often resulting in rapid dehydration. Rotavirus, primarily affecting young children, is a major cause of severe diarrhea globally. However, widespread vaccination has significantly reduced its impact in many developed countries. Adenovirus is a versatile virus capable of causing various illnesses, including respiratory infections, eye infections, and gastrointestinal issues. While it can lead to stomach illnesses, symptoms are often milder compared to those caused by norovirus or rotavirus. Astrovirus is another common culprit of childhood diarrhea, causing vomiting, diarrhea, and fever.

What are The Symptoms?

The symptoms of a stomach virus typically manifest within 12 to 48 hours post-exposure. Common symptoms include nausea, vomiting, diarrhea, abdominal cramps, headache, fever, and fatigue. In severe cases, dehydration can occur, leading to dizziness, lightheadedness, and reduced urine output. While most individuals recover without complications, it's crucial to seek medical attention if you experience severe dehydration, persistent vomiting or diarrhea, blood in your stool, high fever, or severe abdominal pain. Dehydration, especially in vulnerable groups like young children and the elderly, can be dangerous and may necessitate intravenous fluid therapy. If you're concerned about your symptoms or experience severe dehydration, consult a healthcare provider.

Ways to Prevent It

While there's no foolproof way to avoid stomach viruses entirely, adopting these preventive measures can significantly reduce your risk of infection.

Frequent Handwashing

This is the single most effective way to prevent the spread of stomach viruses. Wash your hands thoroughly with soap and water, especially after using the bathroom, changing diapers, and before eating.

Sanitize Surfaces

Regularly clean and disinfect frequently touched surfaces, such as doorknobs, countertops, and toys, to eliminate viruses.

Avoid Contaminated Food and Water

Cook food thoroughly, avoid raw or undercooked foods, and drink clean water. Be cautious when traveling to areas with poor sanitation and consider boiling water before drinking it.

Practice Good Hygiene

Avoid touching your face with unwashed hands and cover your mouth and nose when coughing or sneezing. This helps prevent the spread of respiratory droplets that may contain viruses.

Keeping the television on while falling asleep or leaving a light on in the bedroom may feel reassuring, but new international research suggests it could seriously affect heart health. A recent study has found that exposure to light at night significantly raises the risk of heart disease, even if a person believes they are sleeping well.

Sleeping With Lights On Could Harm Your Heart, Study Warns

The findings come from a large, long-term study carried out by researchers in Australia and the United States. The team followed nearly 90,000 adults in the United Kingdom over a period of nine years. Participants were given light sensors to accurately measure how much light they were exposed to during sleep.

Researchers tracked cases of heart attack, heart failure, and stroke throughout the study period. The results were striking. Compared to people who slept in complete darkness, those exposed to light at night faced a 56 percent higher risk of cardiovascular problems. The risk of heart failure increased by 47 percent, while the likelihood of coronary artery disease rose by 32 percent. The study noted that this risk was particularly higher among women. The risk of stroke was also found to be up to 30 percent higher.

Why Night-Time Light Is Dangerous

According to the research, published in JAMA Network Open, the main reason behind this increased risk is disruption of the body’s circadian rhythm. This internal biological clock regulates sleep, hormone release, metabolism, and other vital functions.

Artificial light at night interferes with this natural rhythm, pushing the body into a state of imbalance. Over time, this ongoing disruption places added strain on the cardiovascular system. Researchers warned that for people over the age of 40, exposure to light during sleep is emerging as a significant risk factor for heart disease.

Professor Frank Scheer, a neuroscientist at Brigham and Women’s Hospital, believes doctors should look beyond sleep duration when assessing patients’ sleep habits. He says physicians should also ask about bedroom conditions, including light exposure.

“There is no harm in keeping the bedroom completely dark,” he explained. “In fact, it is extremely beneficial for overall health.”

Simple Tips For Better, Heart-Healthy Sleep

Experts suggest a few practical steps to reduce light exposure at night:

• Turn off the television, mobile phones, and laptops before going to bed
• If light is needed for safety, keep it below 5 lux, roughly equivalent to the soft glow of a few candles
• Use thick, dark curtains to block out streetlights and outside glare
• Sleeping in darkness may seem like a small change, but researchers say it could play an important role in protecting heart health over time.

Researchers also noted that many people underestimate how much light they are exposed to at night. Even dim sources such as alarm clocks, charging indicators, or light filtering in from nearby buildings can affect the body’s natural night-time processes. Over years, this low-level but constant exposure may quietly increase the risk of high blood pressure, insulin resistance, and weight gain, all of which are closely linked to heart disease. The study reinforces a growing body of evidence that sleep quality is shaped not just by how long we sleep, but by the environment we sleep in.

A neurologist has spoken about a simple daily practice that may help guard against cognitive decline, and it requires just six minutes. Dr Clint Steele, a specialist in the brain and nervous system, works with patients to improve quality of life by strengthening brain function and preventing, and in some cases reversing, conditions such as dementia.

What Is Dementia?

Dementia is an umbrella term used to describe a significant decline in mental function that is serious enough to affect everyday life. It commonly impacts memory, thinking, and reasoning skills. Dementia itself is not a single disease but a collection of symptoms caused by underlying conditions such as Alzheimer’s disease or vascular dementia. Common signs include memory problems, confusion, difficulty finding words, changes in mood or behaviour, and trouble completing familiar tasks.

These symptoms usually worsen over time and are not considered a normal part of ageing. Although there is no cure, treatment options can help manage symptoms, and early diagnosis plays an important role in care planning.

Dementia: Signs And Symptoms

The signs of dementia can differ from person to person. Some common examples include difficulty with short-term memory, misplacing personal belongings like a purse or wallet, trouble managing finances or paying bills, challenges with planning or cooking meals, forgetting appointments, and becoming disoriented when travelling outside familiar areas.

Dementia symptoms tend to be progressive, meaning they often begin subtly and gradually become more severe over time, eventually interfering with daily functioning. If you or someone close to you notices ongoing memory issues or changes in thinking or behaviour, it is important not to dismiss them.

Six-Minute Daily Routine That May Help Slow Dementia Risk

The 56-year-old expert says that reading for six minutes a day could meaningfully lower the risk of dementia, Alzheimer’s disease, Parkinson’s disease, and other neurological conditions. In a TikTok video that has since been viewed thousands of times, Dr Steele points to long-term research showing that strengthening what is known as “cognitive reserve” may help prevent or reduce the likelihood of dementia and similar disorders, as per Mirror.

Why Cognitive Reserve Matters

According to Dr Steele, one way to support cognitive function is by learning new skills, such as picking up a foreign language, learning to dance, or simply reading a book for at least six minutes each day. “Reading six minutes a day actually lowers your risk of dementia, Alzheimer’s, Parkinson’s disease and more,” he told What’s The Jam.

He explained that reading helps build cognitive reserve, which refers to the brain’s ability to adapt. “Adaptability is so important because when you encounter stress, you want your brain to be able to adjust to that stress, respond in the right way, and then, once the stress has passed, adapt again and settle down,” he said.

A Small Daily Commitment

“One of the most important things you can do is read six minutes a day, according to the research, and that will help,” Dr Steele added. Based in Maine and Florida in the US, he has spent 34 years focused on brain health and dementia prevention.

Public Response To The Advice

His TikTok video has also drawn hundreds of likes and comments. One viewer wrote: “Normally read at least 100 books a year, plus the Bible, dance classes, acrobatics, clogging for at least six years, at 84 still moving, just slower, my mom had Alzheimer’s, so I do know!”

Another commented: “I still enjoy reading news every day.” A third added: “Another really good one is fine art, probably why so many older people take up painting.”

Students gaming more than 10 hours a week can have long-lasting negative effects on their physical and mental health, a new Australian study suggests.

Researchers from Curtin University, Perth have found that playing online games for over 10 hours can worsen diets, increase body weight and led to poorer sleep than lighter gamers.

Professor Mario Siervo, Curtin School of Population Health said of the results: "What stood out was students gaming up to 10 hours a week all looked very similar in terms of diet, sleep and body weight. The real differences emerged in those gaming more than 10 hours a week, who showed clear divergence from the rest of the sample."

What Did The Study Find?

Researchers surveyed 317 students across five Australian universities, with a median age of 20, to understand how time spent gaming each week might affect their diet, sleep, and body composition.

Students were categorized as low gamers (zero to five hours a week), moderate gamers (five to 10 hours) or high gamers, who played video games for more than 10 hours each week.

They found that low and moderate gamers showed largely comparable health outcomes but health indicators deteriorated sharply among students whose gaming time exceeded 10 hours a week.

The study found diet quality declined and obesity was more common once gaming exceeded 10 hours a week, with each extra hour linked to poorer diets even after accounting for other lifestyle factors. While high gamers recorded a body mass index (BMI) of 26.3kg/m2, low and moderate gamers fell within a healthier range, with median BMIs of 22.2kg/m2 and 22.8kg/m2 respectively.

Professor Siervo said: "Each additional hour of gaming per week was linked to a decline in diet quality, even after accounting for stress, physical activity and other lifestyle factors."

Additionally, sleep quality was generally poor across all groups but students who played video games for moderate or high amounts of time reported worse sleep than low gamers.

Despite clear results, the expert added that the study does not prove cause and effect but shows excessive gaming is linked to higher health risks, while low to moderate play appears largely fine.

Why Is Playing Video Games Bad For You?

"Our data suggests low and moderate gaming is generally fine, but excessive gaming may crowd out healthy habits such as eating a balanced diet, sleeping properly and staying active.

"Because university habits often follow people into adulthood, healthier routines such as taking breaks from gaming, avoiding playing games late at night and choosing healthier snacks may help improve their overall well-being," Professor Siervo said.

Playing video games for excessive amount of time has also been linked to paving the way for mental health problems such as anxiety, depression, aggression and poor emotional control as well as social/life problems including neglecting responsibilities, isolation, poor relationships, academic/career impact.

Moreover, previous research has also found that playing games for over three hours straight significantly raises the risk of physical issues. Sessions exceeding this time frame can lead to eye fatigue, headaches, neck pain and wrist pain, regardless of the player's age or gender.

This study was published in Nutrition on January 16.