Allostatic load and comorbidities: A mitochondrial, epigenetic, and evolutionary perspective

Area of Science:

• Integrative biology
• Stress physiology
• Psychiatry

Background:

• Stress-related pathophysiology contributes to complex, unpredictable comorbid conditions.
• Allostatic load algorithms offer a method to assess biological wear and tear across multiple body systems.
• The precise mechanisms linking stress physiology to diverse morbidities remain unclear.

Purpose of the Study:

• To propose that biological comorbidities are distinct pathophysiological processes measurable via allostatic load.
• To highlight the utility of allostatic load in predicting both physical and psychiatric comorbidities.
• To introduce key concepts: allostasis, allostatic states, allostatic load, and allostatic overload in the context of stress-related diseases.

Main Methods:

• Conceptual framework integrating allostasis and allostatic load.
• Discussion of mitochondrial biology's role in allostatic load and disease.
• Exploration of epigenetic influences, particularly child maltreatment, on stress perception and biological embedding across the lifespan.

Main Results:

• Allostatic load serves as a quantifiable marker for multisystemic disease processes.
• Biological comorbidities can be identified and potentially predicted through allostatic load measurements.
• The study framework links mitochondrial function and epigenetics to stress-induced pathophysiology.

Conclusions:

• Allostatic load measurement is a promising tool for predicting diverse biological comorbidities.
• Understanding allostatic load provides insights into stress-related diseases and psychopathologies.
• Integrating molecular (mitochondria, epigenetics) and systems-level (allostatic load) perspectives is crucial for advancing stress research.