Foundational Mental Axiom

Mental States Are Physiological

Name: Mental States Are Physiological
Creator: Realised
Published: 2026-10-14

Statement

Emotions, thoughts, and mental health states have biological substrates --- they are not separate from the body

Why it matters

Removes false mind/body split --- sleep, nutrition,
movement, and substance use directly affect mental state

Why Foundational

Foundational because the biological substrates of mental states are among the most robust findings in neuroscience — emotions correlate with neurotransmitter and hormonal patterns, depression and anxiety have measurable inflammatory and HPA-axis correlates, sleep deprivation produces specific cognitive and mood changes, dietary interventions affect mood through gut-brain axis and nutrient signalling. Removes false mind/body split: sleep, nutrition, movement, and substance use directly affect mental state. Realised's pillar architecture rests on this — "mental health" can't be addressed in isolation from sleep, diet, and physical practice because the systems are biologically coupled, not just metaphorically connected.

What would change our mind

Falsifiability: explicit upgrade/downgrade criteria from source

• We'd revise it if replicated studies found mood and thinking holding steady whatever happened to sleep, nutrition, movement and substance use, or if the measurable physiological signatures of anxiety failed to replicate.
• We'd also revise it if replicated work showed willpower reliably overriding a depleted body, so that depleted systems no longer produced depleted mental states.
• What would NOT move us: evidence that psychology and environment shape mental health, because the principle already holds that biology, psychology and environment interact; the claim that depression is purely chemical, which the principle rejects; a single small study; or someone who pushes through on willpower for a while.

Sources (4)

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