A second person has died in a legionnaires' disease outbreak that has sickened dozens of people in New York City, health officials say, even as they report evidence the source of the bacteria has likely been eliminated.
A randomized clinical trial of nearly 400 adults found that fluvoxamine, a low-cost, decades-old antidepressant, significantly reduced fatigue and improved quality of life in people with long COVID, making it one of the first medications to show a meaningful benefit for the debilitating symptom.
Mineral sunscreens are prized for being gentler on skin than chemical alternatives, but they have long left users with a visible white cast. Scientists at UCLA say they have redesigned the zinc oxide particles at the heart of the problem, aiming to make mineral sunscreen usable across all skin tones.
Menopause hormone therapy has swung from being widely feared to widely recommended, but doctors say expectations have overtaken the evidence. Here is what the treatment reliably helps with, what it doesn't, and how the science has shifted over two decades.
US regulators say they remain focused on lettuce supplied by Taylor Farms as the likely source of a multistate cyclospora outbreak, even after one laboratory test used to support that theory turned out to be faulty. Restaurant visits tied to the outbreak have started to decline.
Alpha-gal syndrome is a rare allergy triggered by a tick bite that can leave people unable to safely eat red meat or other mammal products. Cases are rising along Australia's east coast, and doctors say the condition is still widely misunderstood.
US health officials have confirmed that lettuce from Mexico, served at Taco Bell locations across five states, is the source of an outbreak of the parasite cyclospora, which causes severe diarrhea. The outbreak has now sickened more than 400 people nationwide and continues to grow.
Scientists may have found one reason coffee keeps getting linked to healthier aging and lower disease risk. Compounds in coffee appear to activate a receptor called NR4A1 that helps protect cells from stress, inflammation and damage.
For decades, thousands of people around the world have reported hearing a low, droning sound with no traceable external source — a phenomenon known as The Hum. New research points not to an external noise but to a form of low-frequency tinnitus generated inside the ear itself.
Migraine is one of the oldest documented illnesses in medicine, yet scientists have only really begun to understand it in the past decade. The journey from blood-vessel theories to brainstem circuitry has produced the first drug classes designed specifically to target migraine.
Health advisers in England have recommended that the government offer the meningococcal B vaccine free to teenagers from age 15. The push follows an outbreak in Kent earlier this year that killed two people, and targets the age group most likely to carry the bacteria without symptoms.
Fitness trackers that monitor heart rate, skin temperature and sleep are picking up early physiological signs of pregnancy days or weeks before a home test would. The signals come from data the devices already collect for cycle prediction, and experts stress they are a prompt to test, not a diagnosis.
Artificial sweeteners consumed daily by millions of people as a sugar substitute have been linked to faster cognitive decline in a new study. Researchers stop short of claiming the sweeteners cause the effect, but call the association striking enough to warrant closer scrutiny.
A change to how Medicare reimburses smoking-cessation counseling could push more US doctors to actually have the conversation with patients who smoke. Experts say chronically low reimbursement has long been one of the biggest reasons this counseling gets skipped, despite being one of medicine's most effective preventive interventions.
A new year-long study finds that people following an intermittent-fasting schedule kept the weight off significantly better than typical dieters — precisely the point where most diets fail. Researchers say the method's edge may come from its focus on when you eat rather than obsessive calorie counting.
Procrastination researchers say the habit isn't one-size-fits-all: most people who put things off fall into one of four recognisable patterns, each with a different root cause. Identifying which type you are, psychologists say, is the first step toward actually fixing it rather than just feeling guilty about it.
The parasite Cyclospora cayetanensis is driving a surge of cases across several US states, with Michigan seeing the largest outbreak in its history. Here's how the illness spreads, its symptoms, and how to avoid it.
Testosterone therapy has become a fast-growing market in the US, but access runs through several different paths. From traditional endocrinology exams to telehealth platforms and gender-affirming care, who can get a prescription depends on diagnosis, insurance, and state law.
Semaglutide, the active ingredient in Ozempic and Wegovy, slowed biological aging markers in adults living with HIV, the first clinical evidence the drug may influence human aging. Scientists call the finding encouraging but early-stage.
A large laboratory study testing 39 sweeteners found many directly alter the growth of gut bacteria. The most striking finding: combining isosteviol with the antidepressant duloxetine reduced beneficial bacteria and overall microbial diversity.
Focal therapy, a less invasive alternative to removing or irradiating the whole prostate, cut the risk of incontinence and erectile dysfunction in a 10-year NHS trial that followed nearly 3,500 men. Here is how the treatment works and who it might suit.
A study of more than 214,000 people has found that the factors driving dementia risk differ significantly from country to country, challenging the idea of a single global prevention checklist. Some risk factors, though, turned out to be strikingly consistent everywhere researchers looked.
Researchers say a brain-computer interface has restored both movement and the sensation of touch in a 48-year-old man with quadriplegia, using a 'double neural bypass' that reads motor signals and delivers feedback directly to the brain. It is a step beyond earlier implants that restored control but not feeling.
From next April, it will be illegal in England to sell high-caffeine energy drinks to anyone under 16. Here is what the ban covers, why officials say it is needed, and how it compares with rules already in place elsewhere.
As wildfire smoke pushes air quality alerts across more than 20 US states, sales of home air purifiers have surged. Here is what the devices can and cannot do, and how to choose one that actually reduces the fine particles making people sick.
News of a public figure's death from aortic dissection has drawn renewed attention to a rare but often fatal medical emergency, in which the body's largest blood vessel tears from the inside. Here's what causes it, who is at risk, and why it is so difficult to catch in time.
A new study of older adults found that those who regularly went to museums, cinemas, theatres and concerts had bodies that functioned like people roughly three years younger. Researchers believe social connection, mental stimulation and healthier habits may explain the link, though the causal picture is still being worked out.
A small new study found that chewing sugary gum after eating nitrate-rich vegetables like beetroot boosted a beneficial compound called nitrite in the body, producing a short-term dip in blood pressure. Here's how nitrate, bacteria in the mouth and blood pressure are connected.
A modelling study from Canadian researchers suggests cutting back on ultra-processed foods like ready meals, cereals and fizzy drinks could prevent thousands of heart disease deaths a year. Here's what ultra-processed food actually means, and how strong the evidence linking it to heart disease is.
Deaths from coronary artery disease have declined for decades in many wealthy countries, largely thanks to better control of blood pressure, cholesterol and smoking. A new study in JAMA finds that progress has slowed, and identifies where further gains are still within reach.