Blood Pressure

Blood pressure is the force of blood against artery walls, reported as systolic over diastolic (mmHg). It is a vital sign rather than a lab test, but one of the most powerful and modifiable predictors of health.

High blood pressure is a leading cause of heart attack, stroke, heart failure, kidney disease, and dementia, and it is causal — lowering it reduces events. Because it is often symptomless, measurement is the only way to know.

1. 1

   FoundationCardiovascular HealthThe best place to understand what actually prevents heart disease.
2. 2

   ConditionHypertensionPersistently elevated blood pressure
3. 3

   Signal RecordMagnesiumEssential Mineral
4. 4

   Body SystemCardiovascularHeart function, blood pressure, and circulatory health.
5. 5

   BiomarkerApolipoprotein BThe atherogenic particle-count marker

1. Measure it
2. Understand your result
3. See what raises and lowers it
4. Apply evidence-based interventions
5. Recheck on your review cadence

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

Sustained readings above target raise cardiovascular and kidney risk. Isolated high readings may reflect 'white-coat' effect; home monitoring clarifies. Very high readings with symptoms are a medical emergency.

• Validated cuff; correct size and technique
• Home and ambulatory monitoring for diagnosis

That lowering elevated blood pressure reduces cardiovascular and kidney events is established by large randomized trials across drug classes and lifestyle interventions.

• 2017 ACC/AHA High Blood Pressure Guideline
• 2023 ESH Guidelines for Arterial Hypertension
• DASH and SPRINT trials

Sources are named authoritative guidelines and scientific bodies. Biomarker pages present established clinical context; calibrated evidence verdicts on specific interventions live in the linked Signal Records.