Top medical news headlines for the week 14

What you should know about the new COVID-19 'Cicada' variant

A new COVID-19 variant that some have dubbed the "Cicada" variant is quietly spreading across the globe, carrying an unusually high number of mutations that could help it slip past existing immunity, public health experts ...

Cannabis and tobacco use linked to smaller brain volume

Cannabis and tobacco—whether used on their own or together—can affect the brain's structure. A recent study involving systematic review and meta-analysis of more than 103 studies found that both substances are linked to reduced ...

Mirror fragments intercept Alzheimer's-causing protein

Understanding how proteins interact with their own mirror images enabled a Kobe University research team to design a small mirror protein that disables a causal factor of Alzheimer's disease, amyloid-beta.

Digital twin hearts deliver 100% success in arrhythmia trial

Working with "digital twins" of patients' hearts, doctors have improved cardiac ablation outcomes for patients with life-threatening arrhythmias. In the first clinical trials for cardiac digital twins technology, researchers ...

How disinfectants influence microbes across hospital rooms

Just because a topical antiseptic is swabbed on the skin doesn't mean it stays on the skin. In a new study, Northwestern University scientists studied how a powerful antiseptic, called chlorhexidine, affects bacteria in hospital ...

Poison centers see jump in kava calls

Calls to poison centers about kava—a drug found in drinks marketed as a healthy alternative to alcoholic beverages—rose 383% between 2011 and 2025, according to a new UVA Health study. The findings have been published in ...

Scientists map how the body traps 'sleeping' tuberculosis

Scientists at James Cook University have uncovered new insights into how the body contains latent tuberculosis, using a cutting-edge technique that allows researchers to map exactly where immune cells and bacteria interact ...

Research moves closer to 'smart' sensors in knee replacements

If you have a knee replacement, imagine pointing your phone at your knee and pulling up an app that tells you how much stress the artificial joint is experiencing. Knowing the activities that cause the biggest problems—which ...

An injectable particle could make surgery safer for infants

Biomedical researchers have designed an injectable microgel to help reduce bleeding in infants who require surgical care. In an animal model, the engineered microgel reduced bleeding by at least 50%. The paper, "Hemostatic ...