High Blood Pressure Damages Heart, Brain, and Kidneys Simultaneously

Full analysis

Peter Attia explains that elevated blood pressure mechanically stresses the lining of blood vessels (the endothelium), making it the key common pathway for heart attack, stroke, kidney failure, and dementia. Each 20 mmHg rise in systolic and 10 mmHg rise in diastolic pressure is associated with a doubling in the risk of death from stroke, heart disease, or other vascular disease in adults aged 40–70. A sub-study of the SPRINT trial called SPRINT MIND found a 16% relative reduction in dementia risk and a 0.6 percentage-point absolute risk reduction with intensive blood pressure control. The kidneys are especially vulnerable because, despite weighing only 1–2% of body weight, they receive 20–25% of the heart's output with each beat; sustained high pressure accelerates the decline of kidney filtration rate (measured by GFR — the volume of blood the kidneys clean per minute), and that damage compounds when high blood pressure and elevated blood sugar occur together, as they frequently do.