Key points from article :
Patients on blood pressure lowering medication saw less accumulation of harmful brain lesions.
Reduced the accrual of this brain damage by 40 percent in a period of just three years.
But reduction did not translate to a significant improvement in mobility and cognitive function.
Study compared people maintaining high BP of 145 mm Hg compared to those lowered to 130.
Used around-the-clock blood pressure monitors to monitor participants during daily living.
Chronic high blood pressure exacerbates damage to small arteries in deep regions of the brain.
Trial enrolled 199 people who were an average age of 81 years old.