SMC Spain amplifies the voices of experts on current topics that provoke controversy.
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A few weeks ago, the European Food Safety Authority (EFSA) said that exposure to bisphenol A through food is a risk to human health. The agency recommended a much lower tolerable daily intake dose than it had its own previous recommendations. In this explainer, we review key facts and documents to cover this issue--which will continue to make the headlines in months and years to come.
By directing ultrasound to a specific area of the brain, scientists at the University of Washington have succeeded in inducing a state very similar to hibernation in rats and mice. This state, called "torpor", involves a reduction in metabolism and body temperature to save energy. According to the authors, who publish their results in the journal Nature Metabolism, if it could be applied to humans it could be used in space travel or in medicine, to increase the chances of survival in life-threatening situations such as heart attacks or strokes.
A meta-analysis including 30 clinical trials published between 1980 and 2022 concludes that vegetarian and vegan diets are associated with lower blood lipid concentrations, including cholesterol. The research is published in the European Heart Journal.
A team of scientists led by the University Hospital Zurich (Switzerland) has tested a new treatment for glioblastoma, a highly aggressive nervous system tumour with a poor prognosis. The therapy consists of a fusion protein that combines the TNF factor - a key factor in the processes of inflammation and immune response - with an antibody that targets the tumour matrix. The researchers, whose results are published in the journal Science Translational Medicine, have studied its action together with a type of chemotherapy both in mice and in six patients included in a phase 1 clinical trial.
Most so-called compostable plastics require specific conditions to degrade that are only obtainable in industrial settings, warns a study published in the journal PLoS One. Polylactic acid - a polymer obtained from natural renewable sources that is used as an alternative to petroleum-based plastics - takes more than a year to degrade in a marine environment, compared to 35 days for natural cellulose fibres, according to the analysis, which combines observations in waters off the coast of California (US) with laboratory measurements.
A study led by researchers from Northeastern University and Stanford University in Boston (USA) has analysed the source of exposure to partisan or unreliable news when searching on Google. After tracking the information consumption of approximately 1,000 people in the 2018 and 2020 US election periods, their conclusions are that such exposure is determined more by users' own active search than by the content displayed by the search engine's algorithm. The results are published in the journal Nature.
Researchers have shown that hypoxia, or oxygen restriction - equivalent to living at 5,000 metres above sea level - increases life expectancy by up to 50% and decreases neurological decline in laboratory mice. It has already been shown in yeast, worms and flies, but this is the first time it has been demonstrated in mammals. The results are published in the journal PLOS Biology.
A commentary published in the journal Nature Human Behaviour discusses the scientific evidence for why rape victims are often involuntarily paralysed, unable to defend themselves or express themselves without consent, and the implications this has for the world's legal systems.
After three years in which the planet's climate has experienced a phenomenon known as La Niña, in 2023 it gives way to its opposite, El Niño. This has led the World Meteorological Organization to warn that this event, added to climate change, could cause the 1.5 °C limit to be exceeded in the next five years. But what are these "children", how do they affect Spain, how long will they last?
Heat waves and other events accentuated by climate change affect health, especially for the most socially vulnerable people. To counteract these effects, mitigation and adaptation plans for cities are designed based on scientific evidence, the implementation of which belongs to the local political sphere. Two experts in urban health and climate governance analysed these problems and their possible solutions in a briefing organised by SMC Spain.