Research carried out by investigators from the Institut de Recerca Biomèdica Catalunya Sud (IRB CatSud), the CIBER CIBERobn network (Centro de Investigación Biomédica en Red de la Fisiopatología de la Obesidad y Nutrición) and the Universitat Rovira i Virgili (URV) has focused, within the framework of a study published in the scientific journal Andrology, on diet quality in relation to sperm quality. The study concluded that men who regularly consume nuts have better sperm quality.
The study worked with a sample of up to 222 healthy men aged between 18 and 40 years who were participants in the international project called Led-Fertyl. This was a cross-sectional study focused on dietary and lifestyle factors related to semen quality. To analyse the relationship between nut consumption and sperm quality, the researchers collected detailed information on the participants’ eating habits through validated nutritional questionnaires and compared it with the results of their semen analyses, the clinical test used to assess parameters such as sperm concentration, count, and motility.
Participants with a higher consumption of nuts were less likely to show abnormalities in sperm motility, one of the factors that may affect male fertility. More specifically, the research team points out that men who consumed one portion per day were 75% less likely to present sperm motility problems and had a 69% lower risk of having any abnormality in their semen analysis.
Study reference
Dávila-Córdova E, Babio N, Valle-Hita C, Fernández de la Puente M, Beltran-Arasa A, Cebrián-Puig M, Fambuena-Perez V, García-Serrano I, Murphy MM, Salas-Salvadó J, Salas-Huetos A. Nut Consumption and Sperm Quality in Healthy Men: Results From the Led-Fertyl Study. Andrology. 2026. https://doi.org/10.1111/andr.70204
Acting without sufficiently considering the consequences, making hasty decisions or being carried away by emotions of the moment are some of the behaviours associated with impulsivity. In the past, several studies have linked this psychological trait to unhealthy habits, such as tobacco consumption, harmful substances and unhealthy foods, among others. It has also been associated with mental health problems and poorer overall health status. However, there was no clear scientific evidence in older populations without any diagnosed psychiatric disorder.
Now, a research team from the Universitat Rovira i Virgili (URV), the Institut de Recerca Biomèdica Catalunya Sud (IRBCatSud) and the Biomedical Research Networking Centre for the Pathophysiology of Obesity and Nutrition (CIBEROBN) has demonstrated that following a low-calorie Mediterranean diet, engaging in physical activity and receiving behavioural support reduce impulsivity. The results have been published in the journal Psychotherapy and Psychosomatics, one of the scientific publications with the greatest international impact in the fields of psychology and psychiatry.
The team analysed data from 306 participants in the PREDIMED-Plus-Cognition study, which evaluates cognitive status and other factors related to the mental health of participants in the PREDIMED clinical trial. Volunteers were randomly assigned to two groups: one followed an intensive programme aimed at increasing adherence to a slightly calorie-restricted Mediterranean diet, increasing physical activity and reinforcing these changes through behavioural support; the other received only general recommendations to follow a Mediterranean diet. Impulsivity was assessed at the beginning of the study and during the three years of follow-up through personality questionnaires and cognitive tests.
Significant behavioural changes
After three years, participants who had followed the intensive lifestyle programme showed a significant reduction, between small and moderate, in impulsivity levels compared with the control group. More specifically, they improved impulsive personality traits, reducing tendencies such as acting without thinking about the consequences. Even more relevant was the change in their behaviour, as they improved their ability to make sound decisions, learning to prioritise long-term benefits over immediate rewards.
“This is the first time it has been shown that a multimodal intervention can regulate impulsivity in older adults, potentially helping to prevent the development of future chronic diseases,” states Carlos Gómez Martínez, postdoctoral researcher at Helse Vest and the University of Bergen (Norway). For Jordi Salas-Salvadó, Professor of Nutrition at the URV and co-leader of the study together with Gómez Martínez, adopting healthy habits not only improves physical health, but also promotes more reflective decision-making: “It could facilitate the maintenance of other healthy behaviours in the long term, contribute to preserving psychological well-being and foster a greater capacity for self-regulation.”
The study was carried out by researchers from the Human Nutrition Unit of the Universitat Rovira i Virgili, the Institut de Recerca Biomèdica Catalunya Sud (IRBCatSud) and the Biomedical Research Networking Centre for the Pathophysiology of Obesity and Nutrition (CIBEROBN). The research is part of the PREDIMED-Plus study, developed by several groups within the CIBER of the Instituto de Salud Carlos III, and has received funding from the European projects Eat2BeNice and PRIME, as well as from various competitive projects of the ISCIII.
Reference: Gómez-Martínez C, Shyam S, Camacho-Barcia L, Margara-Escudero HJ, Babio N, Forcano L, Corella D, Cuenca-Royo A, de la Torre R, Jimenez-Murcia S, Pintó X, Fitó M, Fernández-Carrión R, Matura S, Franke B, Haavik J, Fernández-Aranda F, Salas-Salvadó J. Three-year effects of a multidomain lifestyle intervention on impulsivity: Results from a randomized clinical trial. Psychotherapy and Psychosomatics. 2026. doi: 10.1159/000550126.
What a woman eats during pregnancy not only affects her own health, but also her child’s future development. In particular, the quality of carbohydrates in the diet —that is, how they affect blood sugar levels— may play a key role in children’s cognitive and motor development.
This is one of the main conclusions of two studies involving IRB CatSud, which suggest that diets with a higher impact on blood glucose levels are associated with poorer outcomes in different areas of child neurodevelopment.
Not all carbohydrates act in the same way in the body. Some cause rapid increases in blood glucose, while others do so more gradually. This difference is measured through the glycemic index and glycemic load. In general, fresh, fiber-rich foods —such as fruit, vegetables, legumes, or whole grains— have a more moderate effect, whereas more refined products tend to trigger faster responses.
In one of the studies, more than a thousand pregnant women and their children were followed during the first years of life. The results indicate that a higher intake of carbohydrates with elevated glycemic index and load during pregnancy is associated with lower scores in language and motor skills in young children.
A second study, with longer follow-up into the preschool stage, reinforces these findings. In this case, differences were observed in aspects such as processing speed, non-verbal skills, and visuomotor coordination depending on the quality of carbohydrates consumed during pregnancy.
The consistency between both studies highlights the need to pay greater attention to this factor in nutritional recommendations for pregnant women. Beyond the amount of carbohydrates, researchers emphasize the importance of prioritizing those with a gentler impact on blood glucose, with the aim of supporting optimal brain development from the earliest stages of life.
This research involved teams from the Universitat Rovira i Virgili and IRB CatSud, among other institutions, within the framework of mother–child cohort studies.
An international study finds epigenetic signals — chemical modifications that regulate gene activity without altering DNA, often influenced by environmental factors such as pollution or stress — associated with bipolar disorder, a mental illness characterised by extreme mood changes, alternating depression and euphoria, which could help to develop more accurate clinical prediction tools.
The study, published in the scientific journal EBioMedicine under the title DNA methylation signatures associated with bipolar disorder in peripheral blood improve prediction models, represents the largest meta-analysis on epigenetics in bipolar disorder carried out so far at an international level. The participation of researchers linked to the Hospital Universitari Institut Pere Mata (HUIPM) and the Institut de Recerca Biomèdica Catalunya Sud (IRB CatSud, formerly IISPV) has been especially relevant, as they have provided their own sample of participants, one of the 12 that have contributed to the study. The research has also included the participation of the Universitat Rovira i Virgili (URV) and the team from the Consorci Sanitari del Maresme — both integrated into the national network Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM) — and the Universitat Autònoma de Barcelona (UAB).
The research analysed a sample of 3,476 people in total — of whom 1,729 had the disorder and 1,747 were healthy — aged between 16 and 53 years, with 56% women, coming from 12 international samples from different countries. The objective was to identify epigenetic changes associated with bipolar disorder.
Among the most important results, the research team identified 47 regions with epigenetic modification associated with the diagnosis of bipolar disorder and, among these, several are genetic regions involved in processes related to neurotransmission, immune response and cell regulation. In addition, the study also shows that polymethylation scores, which are epigenetic indicators that integrate multiple chemical marks in DNA that can activate or deactivate genes, combined with current genetic models, can improve the predictive ability for bipolar disorder, especially in bipolar disorder type I.
“These results reinforce the idea that epigenetic factors, which are more influenced by environmental factors, can provide additional information to genetics (which is more stable) and contribute, in the future, to the development of useful biological indicators for diagnosis, as well as for clinical decision-making in mental health,” says Elisabet Vilella, one of the researchers involved in the study.
The study has also involved research centres and universities from Europe, North America and Australia, within a large international collaboration under the framework of the Psychiatric Genomics Consortium Bipolar Disorder Working Group.
The publication represents a new recognition of research driven from the region in the field of psychiatry and mental health, and consolidates the position of the participating centres as references in translational research and biomedical innovation.
Bibliographic reference
Tesfaye, M., Stavrum, A. K., Höffler, K. D., O’Connell, K. S., David, F. S., Garrett, M. E., Hesam-Shariati, S., Overs, B. J., Pisanu, C., Spano, L., Watkeys, O. J., Weihs, A., Ardau, R., Ashley-Koch, A. E., Athanasiu, L., Beckham, J. C., Bourassa, K. J., Chillotti, C., Djurovic, S., Drange, O. K., … Le Hellard, S. (2026). DNA methylation signatures associated with bipolar disorder in peripheral blood improve prediction models. EBioMedicine, 128, 106284. https://doi.org/10.1016/j.ebiom.2026.106284
Around sixty researchers from all over the country, from both basic and clinical research fields, have participated in the first national conference on genetics in psychiatry, held in Reus this Wednesday and organized by the Hospital Universitari Institut Pere Mata (HUIPM) and the Institut de Recerca Biomèdica Catalunya Sud (IRB CatSud), with the participation of the CIBERSAM network (Centro de Investigación Biomédica en Red en Salud Mental). One of the main achievements of the meeting, held at the HUIPM facilities, has been the promotion of a shared proposal to create a stable network or working group in genetics in psychiatry, with a long-term vision and with the aim that it may evolve into a future scientific society.
During the conference, strategic lines were discussed, such as promoting collaborative work, sharing data and knowledge, or creating a repository of genetic data, as well as the need to strengthen the transfer of results to clinical practice and society.
The meeting has represented a turning point in the field of genetics in psychiatry, since until now researchers specialised in the genetics of psychiatric disorders in the country had never met in a specific forum. In recent years, the growth of research in this field and the emergence of results with potential clinical application have favoured the consolidation of a critical mass that has made it possible to promote this initiative.
“It is the first conference held by specialist researchers in genetics of psychiatric diseases, and the reason is that it is a relatively innovative field. Over the years, the researchers we met at conferences said we had to do something together and, at the end of last October, at an international psychiatric genetics conference in Mexico, we decided to do it and chose to hold the first conference in Reus,” said the research director of HUIPM and deputy director of IRB CatSud, Elisabet Vilella.
At the conference, the different participating teams also shared their lines of work and presented the latest advances in genetics in psychiatry, with the aim of generating synergies and exploring new ways of collaboration. “Our group presented work related to the development and characterisation of neuronal lines from patients with first psychotic episodes, where we look for biological signals to help find the best diagnosis so that there can be the most personalised treatment possible, for example in the development of schizophrenia,” explained the researcher from the Instituto de Investigación Sanitaria de Valencia (INCLIVA), Ricardo Ruiz Miguel, one of the speakers at the conference.
The organisers also highlighted that initiatives like this help to accelerate the transfer of scientific knowledge into real applications and to promote collaboration between research groups, also incorporating work with patient associations as one of the key axes for the future.
With this first edition, the conference has laid the foundations to become a regular reference meeting at the national level, with the intention of continuing to strengthen scientific cooperation and to increase the impact of research in mental health for the benefit of society.
A study identifies a key mechanism in the way that the liver processes the acute and fat, which has direct implications in diseases such as diabetes, obesity and metabolic liver disease. Understanding the role of this mechanism, which exercises as a key “sensor” during the transition from aid to food, and doing it from a physiologic point of view, could open new therapeutic pathways to improve the control of glucose and body capacity to adapt to changes between aid and food. This is especially relevant in diseases such as those described above, since the horse loses precisely this capacity. The study promoted by the IRB CatSud, formerly IISPV) and led by researchers from the area of Diabetes and Associated Metabolic Diseases (CIBERDEM), has been published in the scientific journal Science Advances with the title SUCNR1 coordinates metabolic flux, mitochondrial function, and nutrient-dependent adaptation in hepatocytes. Researchers from various areas of the Consorcio Centro de Investigación Biomédica en Red) (CIBER) of the Instituto de Salud Carlos III (ISCIII) and the Universitat Rovira i Virgili (URV), have participated in the study.
The Diabetes and Associated Metabolic Diseases (DIAMET) research group at IRB CatSud is responsible for the study that provides relevant knowledge to advance in the prevention and treatment of high-impact metabolic disorders in public health in the long term. The research team has focused on succinate, which apart from serving to obtain energy, also acts as a signal in other cells through a receptor called SUCNR1. This receptor is especially abundant in a specific area of the hygro and increases during the development of this organ, which suggests an important role in liver function.
In addition, the research staff has discovered that both the levels of succino and the expression of the SUCNR1 receptor in the liver varied depending on whether the organism is in aid or fed. To better understand their role, the researchers involved studied mice that lack this receptor in the main cells of the hygda (the hepatocytes). In the absence of this receptor, the liver “is active in excess” and ends up producing more glucose than necessary in conditions of aid. This is accompanied by a lower capacity of the organism to adapt correctly to the changes that derive from the nutritional state, that is, in aid or after eating. At the cellular level, the lack of this receptor alters the way in which the water cells use glucose to produce energy, which causes the dependence of other nutrients and alters their functionality. Consequently, in response to the intake, an incomplete recovery of the energy reserves of the cells is observed.
Together, these results identify the SUCNR1 regulator as essential in the metabolic adaptation of the water, connecting energy signals with the capacity of cells to adjust to nutritional changes.
The study involved the participation of other research centres and universities, such as the Centro Singular de Investigación en Medicina Molecular y Enfermedades Crónicas (CIMUS), Universidad de Santiago de Compostela, the Institut de Recerca Biomèdica Barcelona (IRB Barcelona), the Universitat de Barcelona (UB), the Centro Nacional de Investigaciones Oncológicas (CNIO), the Institut de Recerca Sant Pau, the Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), the University of Bern and the Bern University Hospital. Also have participated reseachers of the CIBER de Fisiopatología de la Obesidad y Nutrición (CIBEROBN) and CIBER de Enfermedades Hepáticas y Digestivas (CIBEREHD).
Bibliographic reference
Marsal-Beltran, A., Salmerón-Pelado, L., Ribas-Latre, A., Repollés-de-Dalmau, M., Rodríguez-Peña, M. M., Núñez-Roa, C., Badia, J., Madeira, A., Novoa, E., Beltrà, M., Plata-Gómez, A. B., Capellades, J., Escolà-Gil, J. C., Zorzano, A., Yanes, Ó., Efeyan, A., Nogueiras, R., Gracia-Sancho, J., Vendrell, J., Ceperuelo-Mallafré, V., … Fernández-Veledo, S. (2026). SUCNR1 coordinates metabolic flux, mitochondrial function, and nutrient-dependent adaptation in hepatocytes. Science advances, 12(24), eaec8873. https://doi.org/10.1126/sciadv.aec8873
Metabolic fatty liver disease is a common condition where fat builds up in the liver and affects the body’s metabolism. It is known that men and women experience this disease differently, but the reasons are still not fully understood.
A study from the Biomedical Research Institute CatSud (IRB CatSud, formerly IISPV), published in the journal Biology of Sex Differences, shows that the disease develops in different ways depending on sex.
To study this, researchers from the DIAMET group at IRB CatSud used an experimental model with mice that reproduces the early stages of the disease. This model helps to understand what happens before serious liver damage appears.
The results show that females have more severe liver changes than males at early stages, even though they are usually thought to be better protected in the long term. Females also showed signs of a weaker intestinal barrier, which suggests higher stress in the body.
In contrast, males lost weight, had better blood sugar control, and showed fewer liver problems, meaning they adapted better to the diet. These differences were also linked to changes in brain areas that control appetite, energy use, and inflammation.
Researchers also found that, over time, these results may change, with males becoming more affected in later stages of the disease.
Overall, the study shows that sex differences appear very early and follow different paths. Understanding these patterns can help develop better and more personalised treatments for both men and women.
The results also highlight the importance of including both sexes in biomedical research to improve prevention and treatment of this increasingly common disease.
Reference
Repollés-de-Dalmau, M., Marsal-Beltran, A., Núñez-Roa, C., Vendrell, J., Ceperuelo-Mallafré, V., & Fernández-Veledo, S. (2026). Sex-specific dynamics of MASLD reveal early hepatic and extrahepatic metabolic deterioration in females despite long-term protection. Biology of sex differences, 17(1), 92. https://doi.org/10.1186/s13293-026-00876-y
New evidence highlights the importance of diet in adolescent brain health, a key life stage in which cognition is influenced not only by nutritional factors but also by lifestyle habits and psychological wellbeing. Two studies conducted by the Southern Catalonia Biomedical Research Institute – IRBCatSud (formerly IISPV), in collaboration with the Barcelona Institute for Global Health (ISGlobal) —a centre supported by the “la Caixa” Foundation— and published in the journal Nutrients, explore how the Mediterranean diet and blood fatty acids are associated with different cognitive functions in adolescents from Catalonia. Nearly 630 young people took part in both studies.
The study The Association Between the Mediterranean Diet and Fatty Acids in Red Blood Cells of Spanish Adolescents examines the relationship between adherence to the Mediterranean diet -based on fruit, vegetables, legumes, olive oil, nuts and fish- and the types of fats found in adolescents’ blood, which are an objective indicator of dietary habits. The results show that following this diet helps the body absorb essential nutrients needed for balance and proper brain function. From a biological perspective, because the diet is rich in omega‑3 fatty acids, it contributes to neuronal balance and helps prevent oxidative damage. According to the NeuroÈpia research group at IRB CatSud, this type of diet may support a healthier fat composition from early stages of life.
Omega‑3 linked to better cognitive function
A second study, entitled Red Blood Cell Fatty Acid Patterns and Cognitive Functions in Adolescents, focuses on the relationship between blood fats and different cognitive abilities, such as reasoning, memory and decision‑making. The results show that adolescents with higher omega‑3 levels achieve better results in reasoning tasks and in some aspects of decision‑making. These abilities, which develop rapidly during adolescence, are essential for cognitive functioning and can be influenced by both biological factors and lifestyle. The findings support the idea that omega‑3 fatty acids -mainly found in oily fish, nuts and some vegetable oils- may play an important role in cognitive development during this stage of life.
Emotional wellbeing, lifestyle and cognitive function
Beyond nutrition, brain development during adolescence is also influenced by psychological wellbeing and lifestyle habits. A third IRB CatSud‑ISGlobal study published in Frontiers in Psychology –Exploring the interplay of neuropsychological functions, psychological wellbeing, and lifestyle through principal component analysis: a comprehensive study– reports that lower emotional wellbeing and alcohol or tobacco use are associated with more ADHD symptoms, while physical activity is positively linked to executive functions related to decision‑making and emotional regulation. This study included a sample of 523 adolescents from Catalonia.
According to the study author, Nicolas Ayala‑Aldana, and the principal investigator of the NeuroÈpia group, Jordi Julvez, these findings highlight the importance of promoting healthy dietary habits and lifestyles during adolescence in order to support cognitive development. Although these are observational studies, the results provide useful evidence for designing health promotion strategies that combine nutrition with other key lifestyle factors.
References
Ayala-Aldana N, Pinar-Martí A, Ruiz-Rivera M, Lázaro I, Sala-Vila A, Healy DR, Contreras-Rodriguez O, Casanova J, Sola-Valls N, Vrijheid M, Julvez J. Red Blood Cell Fatty Acid Patterns and Cognitive Functions in Adolescents: A Pooled Analyses with Two Cohort Study Data Sets. Nutrients. 2025 Nov 5;17(21):3483. doi: 10.3390/nu17213483. PMID: 41228554; PMCID: PMC12609364.
Ayala-Aldana N, Lafuente D, Lázaro I, Pinar-Martí A, Manidis A, Bernardo-Castro S, Fernandez-Barres S, Healy DR, Vrijheid M, Contreras-Rodríguez O, Sala-Vila A, Julvez J. The Association Between the Mediterranean Diet and Fatty Acids in Red Blood Cells of Spanish Adolescents. Nutrients. 2025 Sep 6;17(17):2888. doi: 10.3390/nu17172888. PMID: 40944276; PMCID: PMC12430225.
Ayala-Aldana, N., Ruiz-Rivera, M., Pinar-Martí, A., López-Vicente, M., Contreras-Rodríguez, O., & Julvez, J. (2025). Exploring the interplay of neuropsychological functions, psychological wellbeing, and lifestyle through principal component analysis: a comprehensive study. Frontiers in psychology, 16, 1692251. doi: 10.3389/fpsyg.2025.1692251. PMID: 41488935; PMCID: PMC12756113.
A research study based on the analysis of genetic data from hundreds of thousands of people has identified previously hidden genetic links between Autism Spectrum Disorder (ASD) and several cardiometabolic diseases, such as obesity, type 2 diabetes and high cholesterol. These findings, published in the prestigious scientific journal Molecular Psychiatry, help explain why people with autism have a higher risk of developing physical health problems throughout their lives.
D’esquerra a dreta, Elisabet Vilella, Maria Guardiola-Ripoll i Gerard Muntané
The study was carried out by researchers from the Hospital Universitari Institut Pere Mata (HUIPM) and the Institut de Recerca Biomèdica Catalunya Sud (IRB CatSud, formerly IISPV), in collaboration with the University of Oslo, and with the participation of the Rovira i Virgili University (URV).
The results show that some of the same genetic factors that influence autism are also involved in metabolic disorders, such as weight gain and diabetes, and in the same direction. This suggests that there are shared biological mechanisms linking mental health and physical health. However, when cardiovascular health factors such as blood pressure are analysed, the relationship is more complex. In these cases, the same genetic factors may have opposite effects, suggesting that different and still poorly understood mechanisms are involved.
Researchers have also identified more than one hundred regions of the genome involved in these connections, opening up new ways to better understand how the brain and the body interact.
“More and more evidence shows that mental health and physical health cannot be understood separately, and this type of study brings us closer to more personalised medicine that takes into account all the factors influencing people’s health,” says Gerard Muntané, first author of the article.
Experts highlight that these results could help, in the future, to detect physical health risks in people with autism earlier and to design more effective prevention strategies.
Article reference
Muntané, G., Shadrin, A., Guardiola-Ripoll, M., O’Connell, K. S., Frei, O., Naerland, T., Vilella, E., & Andreassen, O. A. (2026). Genetic overlap and shared risk loci between autism spectrum disorder and cardiometabolic traits. Molecular Psychiatry. https://doi.org/10.1038/s41380-026-03563-x