Arterial hypertension and blood pressure Level are associated with mod
estly accelerated cognitive decline over the adult life span and with
moderately increased risk of poor cognitive performance at all ages. C
orrelations between white matter lesions in brain and elevated blood p
ressure provide indirect evidence that structural and functional chang
es in brain over time may lead to lowered of cognitive functioning whe
n blood pressure control is poor or lacking. Preventive methods design
ed to lower population blood pressure, early detection, and aggressive
treatment of hypertension are important to prevent accelerated cognit
ive decline in the individual and to preserve cognitive ability in the
population. Some evidence suggests that poorly controlled hypertensio
n may predispose to the dementias, but more work is needed to ascertai
n this.