A crucial factor in maintaining a healthy brain is controlling your blood pressure. Large studies have shown that cardiovascular events and mortality rates were reduced by 25% in people who were intensively treated to keep their systolic blood pressure at less than 120. In other words you should attempt to keep your blood pressure as close to normal, 120/80, as possible. We realize that this may be extremely difficult for many to do.
Nevertheless when it comes to blood pressure the lower the better. Within reason!