Generally, as we human beings get older have a slight rise in our blood pressure as a result of increase in the demand of oxygen and nutrients. Blood pressure is determined by the amount of blood pumped by the heart and how easily blood flows through arteries.
Normal blood pressure is 120/80.
Normal blood pressure for 50 year old woman have a systolic pressure of, at a minimum, 116; average, 129, and at a maximum, 142. Her diastolic pressure should be 81, at a minimum; 85, average and 89, at a maximum.