A 2026 ECG analysis involving 269 healthy young adults found that sex differences in resting heart-rate dynamics appeared in very short 2-5 second fluctuations, not in the usual 5-minute heart rate variability averages. The short-window similarity graph metric predicted male sex with an odds ratio of 2.78 (95% CI 1.32-5.86), while conventional lnRMSSD, lnHF-HRV, and …
A 2026 Singapore birth-cohort preprint found a conditional childhood-anxiety signal: the cord-blood DNA methylation component predicted less age-13 anxiety only in boys in the low DMN-limbic trajectory group from ages 4.5 to 10.5 years. The paper is useful for mapping developmental risk biology, but it is not a screening test and it does not show …
The intricate relationship between the gut microbiome and major depressive disorder (MDD) is gaining significant attention within the scientific community. Emerging research highlights sex-specific disparities in the gut microbiome’s composition and its potential impact on MDD, pointing towards the necessity of integrating sex as a biological variable in future studies. Highlights: Sex Disparities in MDD: …
Depression, a complex and multifaceted disorder, presents differently in men and women, not only in symptoms but also in how each sex/gender responds to treatment. This divergence has led scientists to explore the molecular mechanisms behind these differences, revealing intricate biological and neurochemical pathways. Highlights: Sex-Specific Prevalence and Symptoms: Women are twice as likely as …
Depression is a multifaceted mental health condition that deeply affects individuals worldwide, particularly the older population. A study in Chinese individuals ages 60 and above sheds light on the complex interplay between depressive symptoms and personality traits, revealing critical insights that could transform how we identify and treat depression in older adults. This research not …