[Download Full Document (PDF)]

Deep Dive | Why heart health requires systemic design

Debate | Beyond the cardiovascular downstream trap

Critique | Redesigning Circulatory Health for Systemic Coherence

Cinematic | Engineering Circulatory Coherence: A Systems-Level Redesign of Cardiovascular Health

Explainer | Why Fixing Isn’t Enough

Click on infographic to enlarge

KEY MESSAGES

• Circulatory health can be understood as the sustained coherence of a multi-scale system shaped across the life course
• Developmental, social, commercial, and policy factors jointly determine system stability
• Disease reflects loss of coordinated function under constraint rather than isolated abnormalities
• Prevention is most effective upstream, where lower-force interventions preserve system capacity
• Commercial determinants increase physiological load while distorting perception of that load
• Cross-sector policy alignment is required to maintain long-term system coherence

Conceptual Domains of the Circulatory Coherence System

Please scroll to right to see the right columns

Domain Name	Key Components	Physiological Correspondence	Role in System Coherence	Prevention Stage Alignment	Associated Structural Indicators
Developmental (DOHaD)	Early nutrition, prenatal environment, stress exposure	Vascular elasticity, nephron number, microvascular density, metabolic flexibility	Establishes baseline system capacity and calibration of sensory/regulatory systems	Primordial prevention	Vulnerability to subsequent disturbance, reduced initial capacity
Social Determinants	Housing, work, education, food environment, social cohesion	Allostatic load, autonomic balance, endothelial function, inflammation markers	Regulates the preservation or erosion of reserve (margin) across the life course	Upstream / Primordial and Primary prevention	Inequality patterns, earlier depletion of margin, slower recovery
Commercial Determinants	Ultra-processed food, tobacco, built environment, digital exposure	Metabolic load, inflammatory load, behavioral load, distortion in sensing	Introduces structured disturbance and creates distortion between actual and perceived state	Upstream / Primary prevention (reducing exposure)	Normalization of harm, delayed recognition of drift, misaligned response
Governance (HiAP)	Regulation, policy alignment, infrastructure, fiscal policy	System-level allostatic load, environmental exposure limits	Shapes broader constraints and aligns policy domains to preserve system viability	Upstream / Primordial and Primary prevention	Cross-sector divergence, need for escalating intervention effort
Constraints	Physiological limits, legislation, regulation	Pressure tolerance, oxygen delivery limits, vascular elasticity	Defines the viable limits within which the system must operate	Primordial / Structural design	Proximity to failure limits, structural drift
Margins	Reserve capacity	Microvascular reserve, cardiorespiratory fitness, metabolic flexibility	Constitutes the system's ability to absorb disturbance without failure	Condition maintenance	Declining resilience, consumption of reserve
State	Observable outputs	Blood pressure, cardiac output, laboratory values, clinical status	Represents the current manifestation of system behavior	Secondary / Tertiary prevention (monitoring)	Static outcome stability masking underlying drift
Disturbance	Environmental, metabolic, or inflammatory stressors	Allostatic load, C-reactive protein (CRP), glycemic burden	Introduces load that challenges system stability	Primary prevention (limitation of load)	Increasing load, cumulative burden accumulation
Perception	System sensing and interpretation	Endothelial sensing, baroreceptor sensitivity, biomarker detection	Mediates the system's ability to detect and interpret its own state	Early detection (Primary/Secondary)	Distortion, divergence between actual and perceived state
Regulation	Control mechanisms	Heart rate variability (HRV), autonomic control, vascular tone	Executes responses to maintain stability following perturbation	Maintenance of adaptive capacity	Increased variability, delayed recovery time
Adaptive Options	Option-space, behavioral and therapeutic responses	Range of physiological responsiveness, metabolic flexibility	Determines the flexibility and pathways available for system response	Preservation of flexibility	Narrowing of response options, rising dependency on intervention