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Related Concept Videos

Psychological and Sociocultural Causes of Schizophrenia01:29

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Schizophrenia, a complex psychiatric disorder, has been historically misunderstood. Early psychological theories attributed its origins to childhood trauma and unresponsive parenting. However, contemporary research largely rejects these notions, favoring the vulnerability-stress hypothesis. This model proposes that individuals with a genetic predisposition to schizophrenia may develop the disorder following exposure to significant environmental stressors. Notably, studies on high-risk...
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Biological Causes of Schizophrenia01:29

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Schizophrenia, a severe psychiatric disorder, arises from a complex interplay of biological factors, including genetic predisposition, structural brain abnormalities, neurotransmitter dysregulation, and developmental irregularities. These factors collectively contribute to the onset and progression of the disorder, which typically manifests in late adolescence or early adulthood.
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Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
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Schizophrenia, a term introduced by Swiss psychiatrist Eugen Bleuler in 1911, describes a severe psychological disorder marked by profound disruptions in attention, thought processes, language, emotion, and interpersonal relationships. The core feature of schizophrenia is psychosis — a state characterized by a fundamental detachment from reality. This disconnection manifests through distorted logic, impaired perception, and atypical behavior, severely affecting the lives of those...
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Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
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Accelerated Pace of Aging in Schizophrenia: Five Case-Control Studies.

Avshalom Caspi1, Gemma Shireby2, Jonathan Mill3

  • 1Department of Psychology & Neuroscience, Duke University, Durham, North Carolina; Social, Genetic and Developmental Psychiatry, Institute of Psychiatry, Psychology, & Neuroscience, King's College London, London, United Kingdom; PROMENTA, Department of Psychology, University of Oslo, Oslo, Norway.

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Schizophrenia is linked to faster biological aging by midlife, as measured by DunedinPACE (Pace of Aging Calculated from the Epigenome). This accelerated aging may explain increased risks for age-related diseases in schizophrenia patients.

Keywords:
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Area of Science:

  • Genetics and Epigenetics
  • Psychiatry and Mental Health
  • Aging Research

Background:

  • Schizophrenia is associated with higher risks of various age-related diseases, suggesting accelerated biological aging.
  • Previous attempts to measure this using epigenetic clocks yielded inconsistent results.
  • A novel DNA methylation measure was employed to test the schizophrenia-aging hypothesis.

Purpose of the Study:

  • To investigate the association between schizophrenia and accelerated biological aging.
  • To validate a new measure of aging pace, DunedinPACE (Pace of Aging Calculated from the Epigenome).

Main Methods:

  • Utilized 5 case-control datasets comprising 1812 psychosis cases and 1753 controls.
  • Calculated DunedinPACE, a measure trained on longitudinal data to assess aging pace.
  • Analyzed data from individuals with a mean chronological age of 38.9 years.

Main Results:

  • Consistent associations were found between schizophrenia and accelerated aging as measured by DunedinPACE across all datasets.
  • These findings were independent of tobacco smoking and clozapine medication.
  • The study provides robust evidence for accelerated aging in schizophrenia patients.

Conclusions:

  • Schizophrenia is associated with accelerated biological aging by midlife.
  • This accelerated aging may underlie the increased risk for diverse age-related conditions, including metabolic, respiratory, cardiovascular diseases, and dementia.
  • Biological aging measures can aid in assessing disease risk and intervention effectiveness.