This means:
“What blood pressure is considered healthy for people at different ages?”
Breakdown
“Normal blood pressure” = a blood-pressure reading generally considered to be in a healthy range.
“For each age” = asks whether the healthy range changes as a person gets older.
Blood pressure is expressed as systolic/diastolic, such as 120/80 mmHg.
Important point
The headline can be misleading because there isn’t a separate “normal” blood-pressure number for every age. Blood-pressure interpretation depends on the individual and the guideline being used. Age alone doesn’t determine whether a reading is healthy.
A simpler version:
“What blood pressure is considered healthy at different ages?”
