The associations between antihypertensive drug and neuropathology changes in Lead Investigator: Na Li Institution : NACC E-Mail : lhaln@hotmail.com Proposal ID : 918 Proposal Description: Associations between different kinds of hypertensive drugs and those with MCI, normal cognition or dementia. The drug types being examined are ARB, calcium channel blockers, and no hypertensive medications. I will be looking at longitudinal data on subjects with NP data available of subjects who have hypertension at any visit with non-missing drug information at the same visit. Only subjects with have MCI, Normal cognition or dementia at the same visit.