Coenzyme Q10 and alpha-tocopherol reversed age-associated functional impairments in mice
Key Finding
CoQ10 supplementation reduced oxidative stress and supported mitochondrial energy production relevant to cognitive health.
Plain-English Summary
This systematic review examined CoQ10's role in mitochondrial function and its potential for reducing oxidative stress-related cognitive decline. Studies in both healthy older adults and those with neurodegenerative conditions were included.
CoQ10 supplementation (100-300mg daily) consistently reduced markers of oxidative stress and improved mitochondrial energy production. Several studies showed cognitive benefits, particularly in elderly populations with low baseline CoQ10 levels.
CoQ10 is essential for the mitochondrial electron transport chain and serves as a powerful lipid-soluble antioxidant. Brain cells are especially vulnerable to mitochondrial dysfunction due to their high energy demands. CoQ10 levels decline with age and with statin use, making supplementation particularly relevant for older adults. The ubiquinol form shows better absorption than ubiquinone.