Millions of people worldwide suffer from gum disease, yet we still don't fully understand how healthy gums turn into damaged, scar-like tissue. Researchers are using cutting-edge single-cell technology to map every individual cell in the gums, uncovering new clues that could transform how periodontitis is treated.

Natural ovulation before frozen embryo transfer is as effective as hormone treatment for achieving a healthy baby by vitro fertilization (IVF), finds a clinical trial from China published by The BMJ.

Offering non-monetary incentives such as free access to outpatient consultations to frequent blood donors is linked to an increase in donations without compromising blood safety, finds a study from China published by The BMJ.

A major UK clinical trial has shown that adding the corticosteroid dexamethasone to standard antiviral treatment for encephalitis (brain inflammation) caused by herpes simplex virus (HSV) does not improve long-term outcomes overall, although early use may lead to better recovery, and the treatment is safe for patients in whom encephalitis is suspected.

One hundred and seventy babies, kids and teens in North Carolina died after fentanyl exposure between 2015 and 2024, new state data shows.

A breakthrough method from the 1990s is now being transformed into an AI-powered tool to help doctors diagnose cerebral palsy.

The Simons Sleep Project (SSP) is a new open-science resource for studying sleep in children with autism. Led by Ben-Gurion University of the Negev scientist Prof. Ilan Dinstein, the new data resource will accelerate research breakthroughs to help children with autism overcome sleep problems, which are very common and of high priority to families.

Histology is one of the foundations of modern diagnostics. When physicians want to determine whether tissue is pathologically altered, they rely on microscopic tissue analysis: They cut the tissue into ultrathin sections, stain it with special dyes, and examine it under a light microscope. In this manner, physicians can identify whether a tumor is present and, if so, what kind of tumor it is—thereby enabling informed therapeutic decisions. In addition, doctors often assess during surgery whether all altered tissue has already been removed or further intervention is required.

Amid a surprisingly severe flu season and a COVID-19 resurgence, those highly contagious respiratory illnesses are drawing the largest share of media coverage and public attention. But it is also the season for another respiratory illness, respiratory syncytial virus or RSV, and RSV cases are "elevated in many areas of the country," according to the Centers for Disease Control and Prevention (CDC).

A study led by scientists at the Centro Nacional de Investigaciones Carlos III (CNIC) demonstrates that stroke severity depends on the time of day the event occurs. The research shows that neutrophils—the most abundant immune cells and first responders after stroke—are regulated by the body's internal biological clock. This circadian regulation influences cerebral perfusion, tissue injury, and patient recovery. The study is published in the journal Circulation Research.