A study in England has found a link between increased exposure to air pollution during early life and the risk of developing psychotic disorders and depression during youth. In addition, greater exposure to noise during childhood and adolescence was associated with an increased risk of anxiety. The results of the study, which collected data from more than 9,000 people, are published in the journal JAMA Network Open. 

Research published in JAMA Network Open indicates that women with premenstrual disorders diagnosed before the age of 25 have a higher risk of all-cause mortality and death by suicide. For death by suicide, the risk increased regardless of age at diagnosis. However, in general, women with premenstrual disorders do not have an increased risk of premature death from natural and unnatural causes. The study compares over several years a group of more than 67,000 women in Sweden with a diagnosed disorder with a group of more than 338,000 women without such a diagnosis. 

Chinese researchers have designed an asthma treatment based on CAR-T cells. A single injection of these cells, modified to attack the eosinophils themselves - a type of white blood cell that is activated by certain infections and allergies - achieved remission of the signs and symptoms of the disease for at least a year in mice. According to the authors, the technique will need to be tested in human clinical trials, but could be useful for treating both asthma and other types of allergies. The results are published in the journal Nature Immunology. 

A South Korean research team has designed an artificial olfactory system capable of distinguishing short-chain fatty acids with 90 % reliability. These molecules serve as diagnostic biomarkers for diseases such as stomach cancer and halitosis, according to the authors, whose research is published in Science Advances. The system - consisting of human olfactory receptors, artificial synapses and an artificial neural network - is able to distinguish combinations of molecules, compared to current techniques that detect single molecules and single compounds. 

The PsychENCODE consortium, established in 2015 and dedicated to illuminating the molecular mechanisms underlying schizophrenia, bipolar disorder, and autism spectrum disorder, presents findings based on the examination of human brains at the cellular level. The studies are published today in the journals Science, Science Translational Medicine and Science Advances.

A study conducted in Spain and five other European countries shows that exposure to mixtures of endocrine disruptors during pregnancy is associated with metabolic health problems in children. The research, published in JAMA Network Open, followed more than 1,100 mother-child pairs between 2003 and 2016 and found a correlation between measures of metabolic dysfunction in children aged 6-11 years, and their prenatal exposure to chemicals such as metals or organochlorine pesticides, among others. According to the authors, these results could be related to the current increase in metabolic syndrome across the lifespan, which results in an increased risk of cardiovascular disease and type 2 diabetes. 

A Finnish study involving more than 700,000 adolescents has found some risk of transmission of some mental disorders among classmates. The results are published in the journal JAMA Psychiatry. 

Research led by ISGlobal has analysed more than 11 million hospital admissions in 48 Spanish provinces during the months of June to September between 2006 and 2019. The results, published in the journal Environmental Health Perspectives, show that high temperatures increase admissions for obesity-related issues and renal and urinary insufficiency, among other causes. 

A study published in the journal Environmental Health Perspectives has analysed hospital admissions in 48 Spanish provinces during the months of June to September between 2006 and 2019. Its results, discussed at a briefing organised by Science Media Centre Spain, show that high temperatures increase admissions for issues related to obesity and renal and urinary insufficiency, among other causes. 

According to a study on the number of pedestrian accidents in Great Britain between 2013 and 2017, published in the Journal of Epidemiology & Community Health, the risk of pedestrian crashes was twice as high for electric and hybrid vehicles as for petrol and diesel vehicles.