Surge in cannabis use seen among individuals with psychosis after legalization

People 60 and older who are excessively sleepy during the day may have more problems with memory and thinking after surgery, suggests a study presented at the ANESTHESIOLOGY 2025 annual meeting. Daytime sleepiness is a symptom of sleep deficiency that affects up to 20% of adults and may increase the risk of perioperative neurocognitive disorders (PNDs), researchers found.

For many couples facing infertility, medicine offers a range of solutions. But for men with non-obstructive azoospermia (NOA)—a genetic condition where sperm production stalls—options remain limited.

An international study has uncovered a new vulnerability in prostate cancer cells that could help improve treatment for one of the most common cancers affecting men.

Mental disorders are among the leading causes of disability worldwide, with severe consequences for individuals, their families, and society at large. Detecting mental disorders typically requires resource-intensive clinical interviews conducted by specialists. In addition, there is a global shortage of trained therapists. In the early stages of a mental disorder, when interventions are most effective, artificial intelligence could significantly improve diagnosis and treatment.

A special group of immune cells known as regulatory T cells, or Tregs for short, became an overnight sensation when a trio of U.S. and Japanese scientists won the Nobel Prize in physiology or medicine on Oct. 6, 2025, for their discovery and elucidation of these cells.

Six-month outcomes from the Ventricular Catheter Ablation Study, the first-in-human evaluation of its FieldForce Ablation System for ventricular tachycardia (VT), have been published in Circulation. Results were also presented as a late-breaking trial at the 20th Annual International Symposium on Ventricular Arrhythmias (VT Symposium 2025), held in Philadelphia Oct. 10–11.

In a new study using AI and machine learning, EPFL researchers have found that it's not only what we eat, but how consistently we eat it that plays a crucial role in gut health.

The idea of a child dying by suicide is unimaginable. Yet, according to recent data, a significant number of children will seriously consider or attempt suicide, even at ages as young as 5. For Adam Bryant Miller, Ph.D., a UNC School of Medicine researcher and father of two, this statistic is deeply alarming. He believes it's critical to identify warning signs early, and he's made it the focus of his current research.

You don't need a gym membership, dumbbells, or expensive equipment to get stronger.

I recently heard Professor Luigi Ferrucci, an expert on aging, speak at my local university's medical school. One line really stuck with me: "The next great step in aging science will be understanding how lifestyle factors slow down aging."

Cedars-Sinai investigators have identified a "molecular switch" on a gene strongly associated with the autoimmune disease lupus, which appears to propel immune cells into overdrive, attacking and damaging healthy tissues and organs.

How do people keep the beat to music? When people listen to songs, slow waves of activity in the brain correspond to the perceived beat so that they can tap their feet, nod their heads, or dance along.

Hypothermia can preserve neuron health following brain injury, but complications from external cooling make it less promising therapeutically. Recent evidence suggests that activating a specific neuron population triggers a reversible, hibernation-like hypothermic state without external cooling, but does this form of hypothermia still preserve neuron health?

Many advanced cancers develop resistance to treatment and become highly aggressive, often leaving patients with limited treatment options. In some cancers, including lung, pancreatic and prostate tumors, a key driver of treatment resistance and metastasis is a protein called integrin αvβ3, which is absent in normal tissues but enriched in aggressive tumors.

The antibiotic EVG7, developed in Leiden, has proven capable of fighting the dangerous gut bacterium C. difficile with only a minimal dose. What's more, the bacterium is far less likely to return, a major issue with existing antibiotics. This research was published in Nature Communications.

Northwestern Medicine investigators have uncovered new insights into the synaptic connections of subgroups of interneurons, findings that may improve the understanding of fear responses and could inform new targeted therapies for post-traumatic stress disorder (PTSD), according to a study published in Cell Reports.

Lifting weights just two or three times a week can significantly change the trillions of bacteria living in your gut, and it might happen in as little as eight weeks.

Intracerebral hemorrhages (ICH) account for 15% of strokes but a disproportionate 50% of all stroke deaths. An ICH occurs when a blood vessel bursts inside the brain and causes bleeding in the brain.