Skip to main content

Los hombres y las mujeres responden al estrés de manera distinta


Los cerebros de los hombres y las mujeres manejan el estrés de forma distinta. Eso altera la manera en que su organismo experimenta enfermedades crónicas como la depresión, la enfermedad cardiovascular y los trastornos autoinmunes, según informan investigadores de EE. UU.


MARTES, 12 de enero (HealthDay News/DrTango) Traducido del inglés: miércoles, 13 de enero, 2010  Los científicos utilizaron IRM funcional para monitorizar la actividad cerebral de hombres y mujeres saludables mientras veían imágenes que desencadenaban estrés. Las mujeres se hicieron el escáner cerebral en dos ocasiones, una vez al inicio de su ciclo menstrual y la otra durante la ovulación.


Al inicio de su ciclo menstrual, la actividad cerebral de las mujeres en respuesta al estrés fue similar que la de los hombres. Pero la respuesta de los hombres al estrés fue mucho mayor cuando se comparó a la de las mujeres durante la ovulación.
"Encontramos que las mujeres han sido dotadas de una capacidad hormonal natural para regular la respuesta al estrés en el cerebro que difiere de los hombres", aseguró la autora del estudio, Jill Goldstein, directora de investigación del Centro Connors de Salud de las Mujeres y Biología de los Sexos del Hospital Brigham and Women's de Boston, en un comunicado de prensa del hospital.
Las diferencias más significativas fueron detectadas en regiones cerebrales que controla la respuesta autonómica de activación o excitación. Los hallazgos sugieren que las diferencias sexuales en el circuito de respuesta al estrés son reguladas hormonalmente a través del control de la activación.
"Los resultados fueron sorprendentes dado que hombres y mujeres reportaron experimentar los estímulos estresantes de forma similar aunque sus cerebros actuaban de formas muy distintas", señaló Goldstein.
Anotó que las enfermedades afectadas por el estrés con frecuencia se presentan de forma distinta en mujeres y hombres.
"Por tanto, comprender las diferencias sexuales en la regulación del estrés en el cerebro puede proveer pistas para la comprensión de la naturaleza de estos trastornos médicos crónicos. Mapear la fisiología específica de cada sexo en el cerebro también proveerá la base para el desarrollo de tratamientos según el sexo para estas enfermedades", aseguró Goldstein.
El estudio aparece en línea en la edición del 13 de enero de la revista Journal of Neuroscience.

Artículo por HealthDay, traducido por Hispanicare


FUENTE: Brigham & Women's Hospital, news release, Jan. 12, 2010
HealthDay

(c) Derechos de autor 2010, ScoutNews, LLC

Comments

Post a Comment

Popular posts from this blog

Exploring the Link Between Circadian Rhythms, Longevity, and Wearable Data: Insights and Future Directions

A recent study in NHANES 2011–2014 explores the potential connection between disruptions in circadian rhythms, measured using wearable devices, and their impact on health outcomes and longevity. The study analyzes data from 7,297 U.S. adults collected through wearable accelerometers as a novel digital biomarker for longevity. Five distinct clusters were identified based on activity profiles: "High activity," "Low activity," "Mild circadian rhythm (CR) disruption," "Severe CR disruption," and "Very low activity." The findings reveal that young adults with extreme circadian rhythm disturbance exhibit higher white blood cell counts and accelerated biological aging. Older adults with circadian disruption are associated with increased systemic inflammation indexes, advanced biological aging, and higher all-cause mortality risk. The research underscores the importance of circadian alignment for longevity at all ages and suggests that wearable
Post a Comment
See more...

The safety of aspartame is under review by WHO after conflicting findings.

Aspartame, a sweetener with health effects Since 1981, the WHO expert committee on additives has confirmed the safety of aspartame consumption within acceptable daily limits. The international organization has established that the acceptable daily intake (ADI) of aspartame is 40 milligrams per kilogram of body weight. This means that a person can consume up to 40 mg of aspartame per kilogram of their body weight per day without risking their health. For example, if someone weighs 60 kilos, the allowable amount of aspartame would be 2,400 milligrams (40 mg/kg x 60 kg). In recent years, several studies have been carried out on the effects of aspartame on health. The Food and Drug Administration (FDA) has reviewed the scientific evidence related to the safety of this sweetener five times since its approval in 1981, and has concluded that it remains safe for use. However, it is being studied again. It has an especially important use in low-calorie beverages consumed by children and pregnan
Post a Comment
See more...

Light Therapy holds promise as a treatment for Alzheimer's Disease

A new article, conducted by Lili Zang and colleagues from Weifang Medical University School of Nursing in Shandong Province, China, discusses a meta-analysis of 15 high-quality trials that investigated the impact of light therapy on individuals with Alzheimer’s disease (AD). The meta-analysis included 598 patients with mild to moderate Alzheimer’s disease, and it covered 15 randomized controlled trials conducted in seven different countries. Those trials were published between 2005 and 2022. Sleep Improvement Light therapy led to significant improvements in several sleep measures. It notably enhanced sleep efficiency, increased interdaily stability, and reduced intradaily variability, all of which are indicators of better sleep quality. Light therapy was associated with a reduction in agitation, depression, and caregiver burden among individuals with Alzheimer’s disease. A significant advantage over usual care was shown in reducing the severity of psychobehavioral symptoms, as assessed
Post a Comment
See more...