Accelerated aging in psychiatric disorders: evidence from epigenetic clocks

Area of Science:

• Psychiatry
• Genetics
• Aging Research

Background:

• Schizophrenia (SZ), bipolar disorder (BD), and major depressive disorder (MDD) are leading causes of global disability and mortality.
• These conditions are associated with premature mortality and chronic somatic comorbidities, indicating accelerated biological aging.
• Epigenetic clocks and epigenetic age acceleration (EAA) are emerging biomarkers for studying aging patterns in psychiatric disorders.

Purpose of the Study:

• To review recent advances in epigenetic aging research concerning SZ, BD, and MDD.
• To examine molecular mechanisms underlying epigenetic aging in these disorders.
• To explore the clinical prediction relevance and therapeutic implications of epigenetic aging for precision psychiatry.

Main Methods:

• Systematic review of recent literature on epigenetic aging in schizophrenia, bipolar disorder, and major depressive disorder.
• Analysis of studies utilizing epigenetic clocks and epigenetic age acceleration (EAA) measures.
• Synthesis of findings related to molecular mechanisms, clinical prediction, and therapeutic interventions.

Main Results:

• Methodological heterogeneity across studies contributes to inconsistent findings in epigenetic aging research for psychiatric disorders.
• The biological validity of current epigenetic clocks requires further establishment.
• Epigenetic aging patterns and their underlying mechanisms in SZ, BD, and MDD are areas of active investigation.

Conclusions:

• Epigenetic clocks show promise for understanding accelerated aging in severe mental illnesses.
• Further research is needed to standardize methodologies and validate epigenetic clocks for clinical application.
• Understanding epigenetic aging mechanisms could advance precision psychiatry and inform novel therapeutic strategies.