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Depressive Symptoms Rose 4 Years Before Death in Twins

MHD featured image for late-life depressive symptoms, terminal decline, twin studies, and mortality.

In a 2,411-person multinational twin-consortium study, depressive symptoms increased significantly as death approached. The strongest design check compared twins directly: twins who died had larger terminal symptom increases than co-twins who survived at least 4 more years. Research Highlights Terminal mood change was visible: Petkus et al. found accelerated depressive-symptom increases roughly 4.3 years before …

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Low CALLY Index Predicted Mortality in Adults With Depression Symptoms

MHD featured image for CALLY index, depressive symptoms, and mortality risk.

A 2026 NHANES mortality analysis found that adults with PHQ-9 depressive symptoms had lower long-term all-cause mortality when their CALLY index was higher: in the fully adjusted model, each 1-unit higher log-CALLY value carried a hazard ratio of 0.59, with a 95% confidence interval from 0.51 to 0.68.1 The useful interpretation is prognostic, not therapeutic: …

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Exercise (Physical Activity) Linked to Lower Depression Risk in College Students (2024 Study)

In a comprehensive study conducted within Shanghai’s Songjiang University Town, researchers embarked on an ambitious project to unravel the complexities of depressive symptoms among college students and to dissect the interplay between these symptoms and physical activity levels. Their meticulous approach utilized a blend of diagnostic tools and questionnaires to categorize depressive symptoms and measure …

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