Research published in Science concludes that mice that feed at night - the active phase of their daily circadian cycle - burn more calories, mitigating the development of obesity.

A double clinical trial has analyzed the efficacy of ruxolitinib cream in treating depigmentation associated with vitiligo. The results are published in the New England Journal of Medicine.

A study in mice published in the journal Nature has analysed the different responses to aggression and the consequences for subsequent behaviour. In general, animals that confronted the aggressor developed greater resilience than those that fled or avoided the aggressor, and the gain was greater as brain circuits associated with dopamine were activated.

Research published in Nature Human Behaviour analyses changes in life expectancy since the advent of covid-19. Its findings show that some countries in western Europe, including Spain, regained some of their lost life expectancy, and others returned to 2019 levels. On the other hand, losses continued in Eastern Europe and the United States.

The Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency (EMA) has recommended granting marketing authorisation for the tetravalent dengue vaccine (live, attenuated) Takeda. The vaccine is intended to prevent disease caused by dengue virus serotypes 1, 2, 3 and 4 in people aged four years and older. Although an approved vaccine already exists, according to the EMA, this quadrivalent vaccine shows increased protection in children and people over 45 years of age.

Modern humans may have coexisted with Neanderthals in northern Spain and France between 1,400 and 2,900 years before the disappearance of Neanderthals, according to a study published in Scientific Reports.

During Pfizer's appearance before the European Parliament this week, a company executive responded to the question of whether "Pfizer's vaccine was tested to stop transmission of the virus (SARS-CoV-2) before going to market" by saying "no".

A US team has successfully integrated brain-like tissue derived from human stem cells into the brains of newborn rats. The research is published in the journal Nature.

An international study published in the journal PNAS has associated deforestation and climate change with different species of monkeys and lemurs that usually live in trees spending more time on the ground. This implies that they would be exposed to a greater number of hazards. The research has taken place in 47 species in different parts of the Americas and Madagascar.

Based on a model, a study theorises that Mars may have been habitable for microorganisms 3.7 billion years ago, according to the journal Nature Astronomy.