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BioSignal
Body System

Cardiovascular

Heart function, blood pressure, and circulatory health.

Last reviewed
July 2026
Version
1.0
Review cadence
Annually

Overview

The cardiovascular system — the heart and blood vessels — circulates oxygen, nutrients, and signals throughout the body. It is the system where prevention has been most decisively proven to extend healthy life.

Why it matters

Cardiovascular disease remains a leading cause of death worldwide, yet it is largely modifiable: lowering atherogenic particles (ApoB/LDL) and blood pressure reduces heart attacks and strokes in proportion to how much and how long.

Start Here

New to this? Read these first

  1. FoundationCardiovascular HealthThe best place to understand what actually prevents heart disease.
  2. ConditionAtherosclerotic Cardiovascular DiseaseThe disease behind most heart attacks and strokes
  3. BiomarkerApolipoprotein BThe atherogenic particle-count marker
  4. Signal RecordBlood Pressure MedicationACE inhibitors, ARBs, calcium channel blockers, and thiazide-like diuretics
  5. Body SystemMetabolism
Typical Journey

How this usually unfolds

  1. Understand the system
  2. Know the key biomarkers
  3. Learn the common conditions
  4. Apply evidence-based interventions

An orientation to how this topic is typically approached — not medical advice.

Major functions

  • Pumping and circulating blood
  • Delivering oxygen and nutrients
  • Blood pressure regulation
  • Temperature and fluid balance
  • Transporting hormones and immune cells

Common conditions

Evidence-based

Prevention

  • Lower ApoB/LDL early and durably
  • Keep blood pressure in range
  • Measure Lp(a) once
  • Stay fit and lean
  • Avoid tobacco
Evidence-based

Improvement strategies

  • Statin/ApoB-lowering therapy where indicated
  • Blood pressure control
  • Cardiorespiratory training
  • Dietary pattern quality
Explore

Explore this system across BioSignal

Related Foundations

Cardiovascular HealthExerciseNutritionWalkingMetabolic Health

Related Signal Records

Blood Pressure MedicationCoenzyme Q10 (CoQ10)Vitamin K2AlcoholOmega-3 Fatty AcidsMagnesiumCaffeineSemaglutideTirzepatideStatinsSGLT2 InhibitorsEzetimibePCSK9 Inhibitors

Related biomarkers

Apolipoprotein BLDL CholesterolHDL CholesterolNon-HDL CholesterolTriglyceridesLipoprotein(a)Hemoglobin A1cHigh-Sensitivity CRPBlood PressureCreatinine & eGFRUrine Albumin-to-Creatinine RatioUric AcidHomocysteineCoronary Artery CalciumOmega-3 IndexVO₂ Max

Related peptide families

GLP-1 / Incretin Therapies

Related body systems

MetabolismBrainMuscle

Related lifestyle interventions

  • Aerobic and resistance exercise
  • DASH/Mediterranean dietary pattern
  • Sodium reduction
  • Weight management
  • Not smoking

Related diagnostics

  • Blood pressure
  • ApoB / LDL-C / Lp(a)
  • Coronary artery calcium score
  • hs-CRP
  • VO₂ max / fitness

Frequently asked questions

What single number matters most for my heart?

ApoB (or LDL-C) and blood pressure are the two most causal, modifiable levers. Measuring Lp(a) once adds inherited risk that standard panels miss.

Is heart disease inevitable with age?

Risk rises with age, but the disease is largely driven by modifiable factors. Lowering them early changes the trajectory substantially.

Educational information — not medical advice

Body System hubs orient you across the evidence; they don't diagnose or treat. Interpret your own health with a qualified clinician. See our Medical Disclaimer.

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