Adjustment of cerebral blood flow (CBF) to neuronal activity via neurovascular coupling (NVC) plays an important role in the maintenance of healthy cognitive function. Strong evidence demonstrates that age-related cerebromicrovascular endothelial dysfunction and consequential impairment of NVC responses contribute importantly to cognitive decline. Recent studies demonstrate that NAD + availability decreases with age in the vasculature and that supplemental NAD + precursors can ameliorate cerebrovascular dysfunction, rescuing NVC responses and improving cognitive per
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