
Blood pressure: how to measure, manage, and treat high blood pressure (AMA #48 rebroadcast)
- Blood pressure is one of the most important but often overlooked risk factors for chronic disease.
- It affects nearly everyone, yet many people don't know their numbers or underestimate its long-term impact.
- Peter Attia emphasizes that blood pressure is a central pillar of longevity – comparable to ApoB and smoking.
- Systole: Contraction phase of the heart, pressure in arteries during ejection; Diastole: Relaxation phase, pressure during filling.
- Normal: <120/<80 mmHg; elevated: 120–129/<80 mmHg; stage 1: 130–139 or 80–89 mmHg; stage 2: ≥140 or ≥90 mmHg.
- The thresholds are based on the SPRINT trial (2015): Intensive lowering to <120 mmHg systolic reduced cardiovascular events by 25% and all-cause mortality by 27%.
- In the US, ~46% of adults have hypertension (stage 1+2). Prevalence increases with age; men are more affected at younger ages.
- Consequences: cardiovascular disease, stroke, kidney damage, and dementia. Every 20 mmHg increase in systolic pressure doubles the risk of vascular death.
- The STEP trial (2021) also confirmed significant reductions in cardiovascular events with intensive lowering.
- Office readings are often unreliable; home measurement under standardized conditions is better.
- Key factors: 5 minutes of rest, no talking, back supported, feet on floor, arm at heart level, empty bladder, correct cuff size.
- Manual measurement (with stethoscope) is the gold standard; automated devices can be systematically higher for some people.
- Weight loss: ~1 mmHg systolic per kilogram lost.
- Salt: Reduction helps, but extreme restriction (<1.5 g/day) may paradoxically increase all-cause mortality.
- Potassium-rich foods (e.g., bananas, potatoes) can lower blood pressure.
- Endurance training: 90–150 min/week at 65–75% of max heart rate lowers systolic pressure by up to 8 mmHg.
- Sleep: <5 or >10 hours of sleep increase hypertension risk by up to 40%.
- Insulin resistance and type 2 diabetes impair vascular function (less nitric oxide).
- First-line classes: thiazide diuretics, calcium channel blockers, ACE inhibitors, ARBs (beta-blockers are no longer first-line).
- Typical reduction: 12–15 mmHg systolic and 9–11 mmHg diastolic.
- ARBs are often slightly better tolerated than ACE inhibitors; ACE inhibitors can cause cough.
- Individual choices e.g. with heart failure (avoid calcium channel blockers), renal artery stenosis (avoid ACE inhibitors/ARBs), or in African Americans (thiazides/calcium channel blockers more effective).
- ~10% have a treatable underlying cause (e.g., kidney disease, renal artery stenosis, hyperaldosteronism, pheochromocytoma).
- Red flags: very high values, sudden onset, treatment resistance, young age without risk factors.
Blood pressure is an indispensable lever for a long, healthy life. Regular, accurate measurement and a combination of lifestyle and – if needed – medication are crucial. “It's not sexy, but it really moves the needle.”






