Key result
Nitrendipine uniquely cuts incident dementia by ~55% among antihypertensive treatments.
Why the study?
Active treatment of hypertension may reduce dementia incidence, motivating a review of randomized controlled studies evaluating the effects of antihypertensives on cognitive decline.
Does antihypertensive treatment reduce cognitive decline and dementia incidence in middle-aged and older adults without dementia?
Does antihypertensive treatment reduce cognitive decline and dementia incidence in middle-aged and older adults without dementia?
While observational data links hypertension to cognitive decline, evidence from RCTs showing that antihypertensive therapy reduces dementia incidence remains limited, with only the Syst-Eur trial demonstrating a significant benefit.
May not yet alter practice for dementia prevention; leaves open whether calcium-channel blockers warrant dedicated cognitive outcome trials.
Dementia reduces a person's ability to perform their activities of daily living and is the leading cause of morbidity worldwide. While most preventive measures are ineffective in reducing dementia risk, active treatment of hypertension in middle-aged and older adults without dementia may reduce the incidence of dementia. Hypertension is associated with vascular dementia but may also affect the manifestations of Alzheimer disease. Observational studies support the association between hypertension and white matter lesions, hippocampal atrophy, and cognitive decline. Both increased and decreased blood pressure were related to the development of white matter lesions. Cohort studies showed that hypertension treatment and treatment duration were associated with lower cognitive decline. This review describes findings from randomized controlled studies on the effects of antihypertensives on cognitive decline. Only the Systolic Hypertension in Europe (Syst-Eur) trial using calcium-channel blockers demonstrated a significant reduction in dementia incidence. Further studies are required to evaluate the long-term benefits of antihypertensive treatment in dementia.
No takes yet. Share an insight, caveat, or question.
Naing et al. (2020) conducted a review in Hypertension, Cognitive Decline, and Dementia. Antihypertensive treatment vs. Placebo or standard blood pressure control was evaluated. While antihypertensive treatments reduce cardiovascular risk, only the Syst-Eur trial using nitrendipine demonstrated a significant 55% reduction in incident dementia.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: