twin study

Published research on twin study.

PsychologyJun 22, 2026

Teen Wellbeing: Genes Explain 81% Stability, Life Events 1% Change

People expect life events to drive adolescent wellbeing — conflicts and breakups push it down, friendships and successes push it up. A 2026 longitudinal twin study from Skaug et al. tested t…

Read article →

AddictionMay 23, 2026

Twin Study Finds No Broad Cytokine Link to Depression or Alcohol Use Disorder

The broad cytokine story failed its most direct community test: in 972 adults, depression, alcohol use, and alcohol use disorder (AUD) were not associated with C-reactive protein (CRP) or a …

Read article →

AnxietyApr 29, 2026

When Inflammation Drives Depression — and When It Doesn’t

‘Depression is inflammation’ holds for a subgroup of patients, not for everyone. Community-sample and twin data weaken the broader version of the claim.

Read article →