The Science of Stress & Free Will | Dr. Robert Sapolsky

Genes & Stress

The genetic basis of stress responses reveals how our genes influence mental resilience and susceptibility to stress. Mark Hyman and Robert M. Sapolsky discuss how genes like COMT and BDNF affect neurotransmitter breakdown and stress responses, explaining why some people are more susceptible to stress than others 1. Epigenetic changes, such as those observed in Holocaust survivor children, further illustrate how stress can alter gene expression. Sapolsky highlights the importance of understanding these genetic influences, noting that stress responses are not solely determined by genes but are also shaped by environmental factors 2.

The system is accessible on the psychological level, on the psychosocial level, on the pharmacological level, and on the nuts and bolts level.

--- Robert M. Sapolsky

This understanding opens pathways for interventions that can modulate gene expression and improve stress resilience.

   

Genetic Influences

Genetic predispositions to mental health conditions are influenced by both genes and environmental factors. Robert M. Sapolsky explains that genes related to brain resilience and trauma response do not doom individuals to disorders but make them vulnerable in adverse environments 3. Mark Hyman notes that gene expression can be modified through lifestyle choices like mindfulness, exercise, and nutrition, offering hope for those with genetic susceptibilities. Sapolsky further elaborates that genes are not deterministic; they are influenced by environmental factors, which can turn genes on or off, impacting stress responses 4.

These are genes about potential and vulnerability and fault lines.

--- Robert M. Sapolsky

This insight challenges the notion of genetic determinism and highlights the role of environment in shaping mental health outcomes.