Nyhetsnavet

A large laboratory study found that many commonly used sweeteners can directly change the growth of gut bacteria. Researchers identified more than 100 cases in which sweeteners behaved differently when combined with...

A drug originally developed for spinal cord injury may offer a fresh approach to treating Alzheimer’s disease. In mouse studies, KCL-286 repaired dangerous DNA damage, reduced inflammation, and targeted multiple...

A new experimental treatment may have found a way to outsmart glioblastoma’s toughest defense: the blood-brain barrier. Researchers used sugar-coated nanoparticles to ferry genetic instructions that restore a key...

An international study found that finerenone slows kidney function decline and reduces the risk of serious kidney and cardiovascular complications in people with chronic kidney disease who do not have diabetes. The...

Researchers solved a long-standing mystery behind how a bacterial toxin associated with colorectal cancer damages the colon. The toxin first binds to a receptor called claudin-4, giving it access to attack the cells'...

A growing Cyclospora outbreak has sickened more than 400 people in four states, and investigators are still searching for the contaminated food responsible. The CDC warns the actual number of cases is likely much...

An existing constipation drug may have an unexpected new use: helping clear the "brain fog" that often lingers after depression. In a small clinical trial, people with a history of depression who took the medication...

Researchers have discovered that a microscopic skeleton inside neurons does much more than hold cells together. It acts as a gatekeeper that controls what brain cells absorb and when they absorb it. When this...

An unusual leopard gecko that naturally develops aggressive tumors may become an important new model for cancer research. Scientists found its tumors share key genetic changes with human cancers, offering a rare...

The World Health Organization (WHO) today released updated guidelines on reducing the risk of cognitive decline and dementia, providing countries with evidence-based recommendations to help prevent or delay the onset...

Going to the cinema, visiting museums, or attending concerts may do more than entertain. Researchers found that older adults who regularly participated in cultural activities tended to have bodies that functioned like...

A deadly fungus has wiped out amphibian populations around the globe, yet some mysteriously recover. Researchers discovered that survivors develop powerful immune defenses while they are still tadpoles, giving them a...

A new study found that chewing sugary gum after eating nitrate-rich vegetables or drinking beetroot juice helped the body produce more beneficial nitrite, leading to a temporary drop in blood pressure. Researchers...

In 2025, 90% of infants globally – or nearly 116 million – received at least one dose of a diphtheria, tetanus and pertussis (DTP) vaccine, and 85% – or 110 million – completed the full three-dose series, according to...

A major review found that people who consumed the most chili peppers had a substantially higher risk of esophageal cancer, though the evidence was less clear for stomach and colorectal cancers. Researchers emphasize...

Researchers found that semaglutide, the active ingredient in Ozempic and Wegovy, slowed biological aging markers in adults with HIV, marking the first clinical evidence that the drug may influence human aging....

A newly discovered network of fine hairs and specialized nerve cells appears to form a dedicated system for sensing mechanical itch, offering fresh insight into why chronic itching occurs. Because humans show signs of...

Researchers have discovered that the retina uses an unexpected communication network that lets separate visual pathways cooperate instead of working alone. A newly identified "commander" cell appears to coordinate...

Exercise doesn't just make the heart stronger. It also rewires the nerves that regulate it, a discovery that could pave the way for more personalized treatments for common heart conditions such as arrhythmias and angina.

Sleeping about an hour and 20 minutes less each night for six weeks caused participants to gain weight and spend more time inactive. Researchers found that even mild, realistic sleep loss, similar to what many adults...

A new study suggests the brain begins making decisions much earlier than scientists previously thought. Researchers found that even primary sensory regions are influenced by higher brain areas through rapid feedback...

An unexpected study found that young non-smokers with healthier diets had higher rates of lung cancer, raising questions about whether pesticide exposure from conventionally grown produce could play a role....

Researchers analyzing data from more than 214,000 people found that dementia risk factors differ widely across countries, challenging the idea of a one-size-fits-all prevention strategy. At the same time, they...

The World Health Organization (WHO) has validated El Salvador as having eliminated trachoma as a public health problem. Trachoma is the world's leading infectious cause of blindness.

Researchers found that bacteria linked to gum disease may help drive the development of calcific aortic valve stenosis by triggering inflammation and calcium buildup in the heart valve. The early findings suggest that...

Researchers found that tau is essential for turning new experiences into lasting memories by helping organize the brain's memory-storing cells. The mouse study also revealed how abnormal tau may contribute to...

Practice may do more than make perfect. Researchers found that extensive training physically reorganizes the brain, allowing learned tasks to bypass the prefrontal cortex and run through specialized circuits instead....

Scientists have uncovered evidence that serotonin, the chemical best known for regulating mood, may also speed the progression of a common heart valve disease in some people. The research suggests that patients with...

Yale scientists discovered two neuron surface proteins that appear to help spread the toxic protein linked to Parkinson’s disease. Blocking these proteins in mice dramatically reduced disease progression, offering a...

Researchers found that every pregnancy rewires the brain in its own way, with a second pregnancy bringing a different pattern of changes than the first. The discoveries could lead to better ways to recognize and treat...

Scientists have redesigned a key piece of MRI hardware using metamaterials, allowing existing scanners to produce clearer images of difficult-to-see parts of the body in less time. The breakthrough could improve...

Scientists found that a modified Mediterranean-style diet with low protein and just enough methionine helped mice live healthier lives while reducing body fat and frailty. Human data also linked lower animal protein...

Millions of people are facing physical, emotional and financial toll of cancer, a disease that claims more than 26 000 lives every day, according to a report released today by the World Health Organization (WHO). With...

Researchers have identified a previously overlooked mechanism of brain cell death that appears to play a major role in Alzheimer's disease and frontotemporal dementia. The finding could lead to new treatments aimed at...

Researchers have identified the brain circuitry that links deep sleep with the release of growth hormone, revealing how the two regulate each other. The newly discovered feedback loop helps explain why poor sleep can...

Using alcohol to cope with stress when young may permanently alter the brain, making it harder to adapt to challenges and increasing the risk of returning to drinking later in life. Researchers also found signs of...

Some brains appear to fight back against Alzheimer's by helping immature brain cells survive damage instead of succumbing to it. Understanding this natural resilience could point researchers toward entirely new ways...

Scientists at UCLA discovered a surprising reason aging muscles heal more slowly. In older muscle stem cells, a protein called NDRG1 builds up and acts like a brake, slowing the cells’ ability to jump into repair mode...

A protein called “Mitch” may hold the key to a new generation of obesity treatments. Researchers found that disabling it in human cells boosts fat burning, increases energy use, and makes it harder for new fat cells...

Today, the World Health Organization (WHO) has added the first molecular diagnostic test for Bundibugyo virus (BDBV) to its Emergency Use Listing (EUL). The test detects the virus by identifying its genetic material...

In a major international effort to evaluate potential treatments for Ebola disease due to Bundibugyo virus (BVD), the PARTNERS clinical trial has opened enrolment today for patients in the Democratic Republic of the...

Could something as simple as vitamin C help support a healthier aging brain? In a study of more than 2,000 older adults in Japan, researchers found that people with lower vitamin C levels in their blood also tended to...

Scientists at the University of Oxford have created a calculator that predicts a person's individual risk of serious muscle disorders from statin medications. Their analysis found that more than 98% of people who...

Creatine is best known as a muscle-building supplement, but scientists are now investigating whether it could also help treat depression by boosting the brain's energy supply. A new review examined five randomized...

Aging may trigger the appearance of specialized stem cells that supercharge the body's ability to create new belly fat. The discovery reveals a potential biological driver of middle-age weight gain and a promising...

The battle between butter and margarine comes down to chemistry. Butter’s naturally occurring fats create rich flavors, golden browning, and flaky baked goods, while margarine’s modified plant oils offer consistency...

Vitamin B12 is needed in microscopic amounts, but a shortage can have major effects on health and energy. The vitamin was first linked to a lifesaving liver treatment for pernicious anemia nearly 100 years ago. Today,...

Healthy older adults experienced measurable improvements in memory, physical performance, and stress after taking placebo pills for just three weeks. The most surprising finding was that the placebo often worked even...

Osteopenia is a common but often overlooked condition that causes bones to become less dense and more fragile. Because it develops silently, many people only discover they have it after a fracture or bone scan. Aging,...

At a time when energy security and affordability have risen to the top of the development agenda, 655 million people globally still lack access to electricity, and two billion use polluting fuels and technologies for...

The World Health Organization (WHO) today calls on countries to expand newborn screening for birth defects, highlighting how early detection and treatment can save lives and reduce lifelong disability for millions of...

Researchers have uncovered a molecular “switch” that helps explain why exercise keeps aging muscles healthy. By reducing levels of a gene called DEAF1, physical activity allows older muscles to clear out damage,...

A new review suggests that doing more exercise and eating more protein than current minimum recommendations may help people stay stronger, sharper, and more independent as they age. The goal isn't building a beach...

Not all fats affect your body the same way. Researchers found that palmitic acid, a saturated fat common in many foods, may contribute to insulin resistance and type 2 diabetes by triggering inflammation, toxic fat...

The obesity treatment landscape is changing fast, with GLP-1 drugs opening the door to more effective care than ever before. Experts now envision a future where medications, minimally invasive procedures, surgery, and...

As the Democratic Republic of the Congo is battling an Ebola disease outbreak caused by the Bundibugyo virus, the World Health Organization (WHO) has released its first comprehensive guidelines for the clinical...

Scientists are beginning to explore a hidden world of thousands of food chemicals that go far beyond the nutrients listed on nutrition labels. This “nutritional dark matter” may hold the key to understanding disease...

Diabetes and dementia appear to be closely intertwined, with each condition potentially influencing the other. Problems with insulin and glucose can affect the brain’s energy supply, increase inflammation, and damage...

A large-scale study suggests that men with higher levels of the amino acid tyrosine may have shorter lifespans, potentially losing close to a year of life expectancy. The finding is especially intriguing because...

Dear Leaders of the G7, the G20, BRICS and of all nations, We write to you together, from Geneva and from Brasília, with one shared conviction: that the world must finish what it started, and that you can help it do...

People taking popular weight-loss drugs such as Ozempic, Wegovy, Mounjaro, and Zepbound may be losing pounds, but they could also be moving less. Researchers analyzing Fitbit data found that daily step counts and...

New data from the World Health Organization (WHO) show sustained progress towards safer blood supplies globally but also highlight persistent inequalities in access to safe blood and weaknesses in governance,...

A new treatment that blocks an aging-related protein restored lost cartilage in old mice and helped prevent arthritis after knee injuries. Human cartilage samples showed similar signs of regeneration, raising hopes...

The Africa Centres for Disease Control and Prevention (Africa CDC) and the World Health Organization (WHO) today launched a joint continental preparedness and response plan on the ongoing Ebola outbreak caused by the...

Children aged less than five years face almost three times the risk of illness from unsafe food than older children and adults, according to new estimates released today by the World Health Organization (WHO).

The Government of the Democratic Republic of the Congo (DRC) and the World Health Organization (WHO) reaffirm their strong partnership and shared commitment to protect the health and well-being of the people of Ituri...

Worldwide, at least 40 million children aged 13–15 use tobacco products, and young people’s use of e-cigarettes and nicotine pouches continues to rise. In advance of World No Tobacco Day – 31 May – the World Health...

In response to the current outbreak of Ebola disease caused by Bundibugyo virus occurring in the Democratic Republic of the Congo, with cases also reported in Uganda, WHO convened several of its expert and advisory...

To the people of DRC, especially to the people of Ituri Jambo kwenu wakahaji wa Ituri Mbote na bino, bato ya Ituri My name is Tedros, and I am the Director-General of the World Health Organization (WHO). But today, I...

Summary of discussions of 23 May at the Seventy-ninth World Health Assembly.

The Committee’s advice aligned with the determination by the WHO Director-General that the event constitutes a public health emergency of international concern (PHEIC), but does not meet the criteria for pandemic...

Two New Medical Tests Added to MedlinePlus

Revised and updated MedlinePlus tutorial Evaluating Internet Health Information now available in Spanish

Test Your Knowledge Quizzes Added to MedlinePlus

Harvard experts say most recommendations are well-supported, but guidance on total fat intake omits decades of evidence The World Health Organization (WHO) has released updated guidelines for defining healthy diets,...

The World Health Organization (WHO) released a new guideline on non-sugar sweeteners (NSS)—often referred to as artificial or low-calorie sweeteners—that advises against use of NSS to control body weight or reduce the...

My MedlinePlus Newsletter Discontinued

MedlinePlus and MedlinePlus En Español Homepages Refreshed