{"ok":true,"nota":{"id":"277f8b91c7909194","slug":"un-modelo-con-resonancias-cerebrales-anticipa-que-adolescentes-van-a-e-277f8b","titulo":"Un modelo con resonancias cerebrales anticipa qué adolescentes van a empezar a tomar en atracón","resumen":"Analizaron imágenes cerebrales de chicos de nueve y diez años en Estados Unidos y en un segundo grupo independiente. Con machine learning intentaron predecir quiénes tendrían episodios de consumo excesivo de alcohol a los dieciséis o diecisiete años.","fuente":"medrxiv","fuenteNombre":"medRxiv · preprints","color":"#1f7a4d","autor":"Visontay, R., Byrne, H., Devine, E. K., Sunderland, M., Fan, L., Wen, W., Perica, M., Tapert, S., Clark, D., Nooner, K.,","url":"https://www.medrxiv.org/content/10.64898/2026.10.18.26365855v1?rss=1","imagen":"/hoy/portada/277f8b91c7909194","tema":"salud","subtemas":["adolescencia","consumo de alcohol","neurociencia","resonancia magnetica","prevencion"],"entidades":["ABCD","NCANDA"],"formato":"dato","entretenimiento":false,"pubTs":"2026-10-24T00:00:00.000Z","indexTs":"2026-10-24T16:59:18.926Z","hash":"91c46522aeb2a0f4c7b60dad4b981244b27f0f11919c19e0c0caa63b8c4edf17","tsa":{"time":"Oct 24 16:59:40 2026 GMT","provider":"freetsa.org","sobre":"sello"},"stats":{"views":0,"likes":0,"clicks":0,"dwell":0},"tipo":"motor","registro":"hallazgo","porQueImporta":"La idea de que el cerebro del chico ya muestra señales antes de que empiece a beber abre una pregunta incómoda sobre prevención. Para una familia argentina, esto sugiere que el riesgo no siempre empieza en la primera copa, sino en rasgos que se gestan años antes. El estudio se mete en la causalidad con herramientas estadísticas, pero las conclusiones son exploratorias y dependen de modelos complejos. Antes de cualquier uso práctico, hay que confirmar que esas diferencias cerebrales explican algo y no son solo un reflejo de otros factores.","quienFirma":"Adolescent Brain and Cognitive Development (ABCD) y National Consortium on Alcohol and NeuroDevelopment in Adolescence (NCANDA)","confianza":"preprint","consulta":{"pregunta":"¿Usarías un test cerebral para detectar riesgo de consumo en adolescentes?"}},"sello":{"hash":"91c46522aeb2a0f4c7b60dad4b981244b27f0f11919c19e0c0caa63b8c4edf17","sello":"9b04e256f7ad2c43d05ee126496bc530a93cee552bc36cc6127547082e44c745","beacon":{"drand":{"cadena":"8990e7a9aaed2ffed73dbd7092123d6f289930540d7651336225dc172e51b2ce","ronda":6581004,"aleatorio":"18fa3ebd0d23e51eddcfd942bf92bbc809cc6eeb0ce5c2a97021a740f6fe817b","tiempo":"2026-10-24T16:59:00.000Z"},"nist":{"cadena":2,"pulso":1997695,"salida":"2AC2AD0FD15EA4B557A3E6116D19A7A248B9BE4CD68ECAF85135A44A079725445FC9BE22BDB61B93C43C9F1673D19E58C8A772BD4555DCB4851540739CADD210","tiempo":"2026-10-24T16:58:00.000Z"},"noAntes":"2026-10-24T16:59:00.000Z"},"verificacion":{"drand":true,"nist":true},"tsa":{"time":"Oct 24 16:59:40 2026 GMT","provider":"freetsa.org","sobre":"sello"},"original":{"titulo":"Exploratory brain-wide analyses predicting binge drinking: A machine learning and targeted causal inference pipeline in two adolescent cohorts","descripcion":"Background: A sizeable literature has found that neuroanatomical differences predict alcohol use outcomes in adolescence. However, due possibly to small samples and inconsistent/limited methodologies, it is still unclear which specific morphometric features are most predictive and if they are also causally implicated in binge drinking onset. Methods: To differentially predict abstinence from binge drinking by age 16-17, a SuperLearner ensemble algorithm was fit to structural and diffusion MRI features at age 9-10 in the Adolescent Brain and Cognitive Development cohort (ABCD). A separate model was fit using the National Consortium on Alcohol and NeuroDevelopment in Adolescence (NCANDA), in w","pubDate":"2026-10-24","url":"https://www.medrxiv.org/content/10.64898/2026.10.18.26365855v1?rss=1"},"indexado":"2026-10-24T16:59:18.926Z"}}