You’ve likely heard the old rule: “Normal blood pressure is 100 plus your age” (e.g., 140/90 for a 40-year-old). This is dangerously outdated advice—and following it could put your health at serious risk.

Let’s clarify with current medical evidence: Major health organizations no longer define “normal” blood pressure by age. Elevated blood pressure harms arteries and organs at any age—and treating it saves lives, even in older adults.