The gastrointestinal (GI) pathogen norovirus was the leading cause of infectious-disease outbreaks on cruise ships over the past 57 years, but respiratory pathogens such as influenza and SARS-CoV-2 also emerged as important contributors, reveals a meta-analysis published in eClinicalMedicine.
Eating fish frequently is good for your heart and brain. But is canned tuna healthy enough to eat every single day? A dietitian reveals the best options.
A gene responsible for compacting trash inside the brain appears to be a key player in Alzheimer's disease, and doctors may be able to target it to better treat or help prevent the devastating condition, new UVA Health research suggests.
A family of five is exposed to the flu virus, but only two of them get sick. A lifelong chain-smoker lives 100 years, while a professional athlete in their prime dies of an unexpected heart attack. A drug fails a clinical trial due to harmful side effects in a subset of patients despite showing good results in others.
Counties where residents suffer from higher diabetes rates across the Deep South often also face greater poverty, food insecurity and barriers to health care and physical activity, a new University of Mississippi study reveals.
Julianne Moore takes extra care when it comes to looking after her body and her brain. In an interview with TODAY.com, she reveals the practices that help most.
New research reveals that participating in cancer clinical trials can cause financial burdens that are shaped by both socioeconomic and logistical factors. The analysis published by Wiley online in CANCER, indicates the need for better reimbursement programs to improve equitable access to, and retention in, cancer clinical trials.
Dr. Daniel Amen reveals the everyday habits that worsen depression, from alcohol use and isolation to processed foods and unchecked negative thoughts.
A Science Advances study reveals how brain scan connectivity patterns predict Alzheimer's disease years before memory loss or cognitive decline.
In TODAY.com’s Expert Tip of the Day, a gastroenterologist reveals which supplement she recommends to people who struggle to get enough fiber in their diet.
How can we efficiently collect light returning from tissues while also identifying what it tells us about blood flow in the deeper tissues? Conventional interferometric near-infrared spectroscopy (iNIRS) can distinguish signals according to the amount of time that light takes to travel through tissue, but it collects only a few photons. Camera-based systems capture many more photons, but this distinction is not realized when living tissue changes rapidly. Researchers associated with ICTER combined both approaches in a hybrid system. They showed that an appropriately analyzed camera signal can reproduce the blood-flow response observed with iNIRS for late-arriving photons, which are more sensitive to deeper tissues.
A promising new study reveals many babies diagnosed with peanut allergies may no longer be allergic. NBC News medical contributor Dr. Natalie Azar joins the 3rd Hour of TODAY to share more on these findings and what parents of children with a peanut allergy should know.
Nail salon workers in New York City face greater health risks on the job than previously understood, according to a new study published in the journal Risk Analysis. Researchers found that chemical concentrations spiked repeatedly throughout the workday, revealing short-term exposure peaks that traditional full-shift averages may overlook. These peaks could have important implications for worker health.
A new study led by researchers at The University of Hong Kong (HKU) has established the first systematic weekly benchmarks for green space exposure and mental health. Drawing on 45 years of global research, the study reveals that even modest weekly contact with nature yields significant mental health benefits, with positive effects rising rapidly at lower levels of exposure before tapering off as visits become more frequent or prolonged.
New research simultaneously published in the Journal of the Society for Cardiovascular Angiography & Interventions and presented at TCT 2026 found that the annual number of transcatheter aortic valve replacement (TAVR) procedures among patients younger than 70 increased nearly ninefold within one health system, rising from 15 in 2014 to 134 in 2024. Surgical aortic valve replacement (SAVR) remained the predominant approach across the age groups studied.
A new molecular map of breast cancer has identified novel forms of the disease and provides a foundation for selecting personalized treatments guided by a tumor's molecular characteristics rather than standard pathology alone.
A skeleton hanging on a door or standing in your neighbor's yard for Halloween looks like a finished structure. But the skeleton inside a living body is constantly changing. Around menopause, those changes can tip toward bone loss, often without pain or another obvious warning.
Dr. Cedrek McFadden explains the importance of what you do in between your workouts. How to make sure you’re looking after your muscles and nervous system.
Patients with early-stage lung cancer undergo surgery unless preoperative evaluation reveals poor lung function, which is predictive of poor outcomes. Imaging—like MRI or CT scans—isn't the standard of care for conventional evaluation due to issues like cost, the need for contrast and inaccuracy.
Leading drivers of mortality look different according to political geography, experts write.
Ahead of Australian Food Safety Week, Nov. 7 to 14, 2026, with the theme "Raw food know the risk," the Food Safety Information Council has released new research showing 60% of Aussies consume raw fish or seafood, and 17% do so at least once a week.
Canned tuna is a quick source of protein, but which type is best for you? A dietitian reveals what to look for in healthier canned tuna and which types to limit.
Excessive physical exercise affects more than just the muscles; it can also alter brain chemistry. A new study published in the journal Neuroscience reveals that exhaustive training without adequate rest alters the regulation of dopamine in the hippocampus, a brain region closely linked to memory and the regulation of emotions.
Spread through the bite of Aedes mosquitoes, dengue is a viral infection that can cause anything from mild fever, flu-like symptoms and joint pain to a severe form known as dengue hemorrhagic fever. What makes dengue particularly unusual and dangerous is that a second infection with a different strain, or serotype, can sometimes lead to more severe disease rather than stronger immunity.
A team from the Genomics and Transcriptomics of Synucleinopathies (GTS) research group at the Germans Trias i Pujol Research Institute (IGTP) has identified molecular changes in platelets associated with the progression of a rare case of early-onset Parkinson's disease. The study, published in Movement Disorders, highlights the value of these blood components as an accessible source for investigating potential biomarkers of disease progression.
New Welsh research has revealed how the combination of congenital anomalies, socioeconomic deprivation and other aspects of children's health and educational circumstances influences their attainment.
Jim LaValle reveals how post-meal glucose spikes, insulin resistance and sleep apnea are deeply connected, plus the 10-minute walking habit.
Porsha Williams revealed to "CBS Mornings" co-anchor Gayle King that she had to undergo an emergency partial hysterectomy this year after doctors discovered 21 uterine fibroids
