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New insights explain the Treg paradox in colorectal cancer

In most solid tumors, high numbers of regulatory T (Treg) cells are associated with poorer outcomes because they dampen the immune system's ability to fight against a tumor.

15 Dec 2025

Metagenomics reveals overlooked viral risks in treated water

Viruses are everywhere in wastewater treatment plants, quietly interacting with bacteria as sewage is cleaned and reused.

15 Dec 2025

New insights into alcohol-related DNA damage and cancer risk

Alcohol consumption leads to the formation of a toxic compound called acetaldehyde, which damages DNA.

15 Dec 2025

New study defines rapidly progressive dementia

A new multicenter study led by Mayo Clinic researchers has established a practical, evidence-based definition for rapidly progressive dementia (RPD), a rare but devastating form of cognitive decline that develops over months instead of years.

15 Dec 2025

Scientists create light-controlled versions of cholesterol

High levels of cholesterol are linked to heart disease, stroke, and many other health problems. However, this complex and vital fatty, water insoluble molecule-a lipid-is found in every cell of the body and is not all bad news. It also regulates crucial processes that science has yet to map.

15 Dec 2025

Australian scientists uncover key genetic drivers behind long COVID

Australian scientists have identified the key genetic drivers behind long COVID, revealing why some people continue to experience debilitating symptoms long after their initial infection.

15 Dec 2025

Inclusive swimming lessons boost safety and confidence for Black youth

Black youth in the United States disproportionately experience fatal drowning at rates up to five times higher than their White peers.

15 Dec 2025

Using sound waves to soften tumors and boost chemotherapy

Cancer is one of the leading causes of death in the U.S., second only to heart disease. But a new cancer treatment method from CU Boulder researchers uses sound waves to soften tumors and could be a potent tool against the disease.

15 Dec 2025

Six midlife depressive symptoms linked to dementia decades later

Six particular depressive symptoms when experienced in midlife predict dementia risk more than two decades later, finds a new study led by University College London (UCL) researchers.

15 Dec 2025

COVID-19 could leave a measurable imprint on the brain

COVID-19 does not just affect the respiratory system, but also significantly alters the brain in people who have fully recovered from the infectious disease, highlighting the long-term neurological impact of the virus.

15 Dec 2025

What drinking kefir really does to your gut and oral microbiome

The impact of kefir on gut and oral microbiomes shows promise, but inconsistent findings and study limitations call for more rigorous scientific investigation.

15 Dec 2025

Understanding how the immune system protects against fungal pathogenicity

The yeast Candida albicans colonizes mucosal surfaces and is usually harmless. However, under certain conditions it can cause dangerous infections.

15 Dec 2025

Novel diagnostic approach enables detection of antibiotic resistance and pathogenicity in Klebsiella strains

Antibiotic resistance is one of the most pressing—and quietly advancing—challenges facing modern medicine. Among the most dangerous bacterial pathogens driving this crisis is Klebsiella pneumoniae, a microorganism capable of causing severe infections while evading both antibiotics and the human immune system.

15 Dec 2025

Researchers develop nasal antiviral platform using AI technology to block flu and COVID-19

Respiratory viruses that have diverse strains and mutate rapidly, such as influenza and COVID-19, are difficult to block perfectly with vaccines alone.

15 Dec 2025

Climate shocks creating new pathways for disease across Africa

Climate shocks are reshaping ecosystems, creating new pathways for disease across Africa, writes Albert Ansah.

15 Dec 2025

How brain cells manage long distance genetic instructions

Scientists found that messenger RNA (mRNA) molecules that carry genetic instructions to the far reaches of neurons in the brain tend to cluster together mostly because they are abundant, not because they move in coordinated groups.

15 Dec 2025

Novel AI tool not only identifies genetic mutations but also predicts the type of disease

Scientists at the Icahn School of Medicine at Mount Sinai have developed a novel artificial intelligence tool that not only identifies disease-causing genetic mutations but also predicts the type of disease those mutations may trigger.

15 Dec 2025

Single-pill combination medications may simplify treatment for adults with high blood pressure

Taking one pill that combines two or more blood pressure medications may help adults with high blood pressure (also known as hypertension) lower their blood pressure level faster and more effectively than taking multiple medications separately, and it may also reduce the risk of heart attack and stroke, according to a new scientific statement published today in the American Heart Association's journal Hypertension.

15 Dec 2025

Half of hospitalized COVID-19 patients developed long COVID

Research from Thailand shows high long COVID prevalence in hospitalized patients, with severe illness increasing risk and vaccination offering protection.

15 Dec 2025

Many parents struggle to navigate conversations about nutrition with teens

As teens gain more independence in their food choices, many parents struggle to navigate conversations about nutrition -which could be especially important during the holidays, when celebrations often center around meals.

15 Dec 2025