Question

What is the dangerous level of high blood pressure?

Answer 1

Normal blood pressure readings for people should be around 120/80mmHg but can sometimes be lower depending on a persons age.

Any blood pressure above 140/90 mmHg is getting into hypertension and and should be lowered before it causes heart problems and other health issues.

180/120 mm HG then it's getting into the danger zone.

Here's a chart on blood pressure readings.