This means:
“What blood pressure is considered normal for people at different ages?”
Breakdown
“What is the normal blood pressure” = asking what blood-pressure reading is considered healthy.
“For each age” = asking whether the normal range changes depending on someone’s age.
Blood pressure is written as systolic/diastolic, such as 120/80 mmHg.
Important point
The headline can be misleading because there isn’t a simple rule that says “this is the normal blood pressure for age 50, this for age 60, this for age 70,” etc. Blood-pressure targets depend on factors such as overall health, medical conditions, and medications.
A simpler version:
“What blood pressure is considered healthy at different ages?”
