University of Oviedo

A study by the University of Cádiz has identified six factors that drive polarization around health-related issues, for example during crises such as the COVID-19 pandemic: political ideology, misinformation, social media dynamics, trust in institutions and professionals, risk perception, and socioeconomic factors. This review, published in Science Advances, brings together the conclusions of 90 previous studies and analyzes how these determinants exacerbate health inequalities and influence compliance with public health measures.

An international team, including several Spanish groups and coordinated by the Institute for Bioengineering of Catalonia (IBEC), has developed a pioneering technology that allows for the creation of multiple human kidney organoids, their combination with pig kidneys outside the body, and their successful transplantation back into the same animal. The method could contribute to improving future research and, according to the authors, allows us to envision a future clinical scenario in which organs destined for transplantation can be treated and conditioned before implantation. The work is published in Nature Biomedical Engineering. 

A team from China has reported the results of the first liver transplant from a pig to a living human. Earlier this year, a procedure that served as a proof of concept was published, but it was performed on a brain-dead person. In this case, after modifying 10 genes in the porcine liver, an auxiliary transplant—not removing the entire organ—was performed on a 71-year-old patient with cirrhosis and liver cancer. It worked well for the first month, but on day 38, the graft had to be removed due to the development of complications, and the patient died on day 171. According to the researchers, who published the case in the Journal of Hepatology, this is "a fundamental step that demonstrates both the promise and the obstacles that remain to be overcome".

More than 54,600 children under the age of five in Gaza are in need of medical care for acute malnutrition, according to estimates from a study published in The Lancet, which shows that the prevalence of malnutrition decreases during a ceasefire and increases during Israeli blockades of access to food, water, or medicine. For example, after four months of severe aid restrictions—between September 2024 and January 2025—malnutrition increased from 8.8% to 14.3%, with a higher incidence in Rafah and among children between 24 and 59 months of age. The study, conducted by UNRWA, is based on data from more than 219,000 children between the ages of six and 59 months from various locations in the Gaza Strip, collected between January 2024 and August 2025.

The Karolinska Institute has awarded the Nobel Prize in Medicine or Physiology to Mary E. Brunkow, Fred Ramsdell and Shimon Sakaguchi for describing how the immune system is regulated so as not to harm us. His groundbreaking discoveries on peripheral immune tolerance have spurred the development of new treatments for cancer and autoimmune diseases.

Through surveys of 78 healthcare workers in Gaza between August 2024 and February 2025, an international team has documented patterns of injuries among the civilian population during Israel's ongoing invasion. The most common traumatic injuries were burns, followed by injuries to the lower and upper limbs. Explosion damage accounted for most of the weapon-related trauma, which particularly affected the head, while gunshot wounds were mainly located in the lower limbs. The study is published in The BMJ.

Previous studies had confirmed the presence of liquid in Mars' core. However, there was conflicting information about the possible existence of a solid component. Now, data from NASA's InSight mission show that there is indeed a solid component in the planet's core, whose radius is estimated at about 600 kilometers. The data, published in the journal Nature, may increase our understanding of the formation and evolution of Mars, as well as its potential habitability.

A team in China has transplanted a pig lung, genetically modified using CRISPR, into a brain-dead human. According to the researchers, this is the first time a lung transplant of this kind has been performed. The organ remained viable for the nine days of the study, although it showed some signs of damage and immune rejection. The results are published in the journal Nature Medicine.

A US team has analyzed the evolution of the global population exposed to forest fires between 2002 and 2021. The study indicates that the number of people exposed has increased by 40%, despite a 26% reduction in the area burned. This is mainly due to the increase in the population living in urban-forest interfaces. 85% of exposures occurred in Africa, even though forest fire disasters in North America, Europe, and Oceania have received most of the attention, notes the study, which is published in the journal Science.  

Several areas in the region of El Bierzo in León and the province of Zamora have seen numerous forest fires in recent hours, forcing more than a thousand people from different municipalities to evacuate. One person has died. The flames have affected the Las Médulas natural area, listed by UNESCO as a World Heritage Site. Another fire in Tarifa (Cádiz) has forced the evacuation of hundreds of people, and also in Tres Cantos (Madrid), where one person died. In addition, there are active outbreaks in several areas of Galicia. The government declares a pre-emergency phase.