Brain Health

What do blood antioxidant levels have to do with cognition?

Dr Frank Lipman
Dec 20, 2022

Did you know that levels of blood antioxidants may influence cognition?

Study Summary

A study found that those with higher blood concentrations of the antioxidants, lutein and zeaxanthin, had a lower risk for dementia when compared to those with low levels. These antioxidants are found in green leafy vegetables, spinach, broccoli and peas. There are limitations to this study, for instance, the levels of antioxidants found in blood might not be reflective of levels over a lifetime.

A similar systematic review concluded that the majority of research suggests that dietary antioxidants likely improve some areas of cognition.

The Hearty Take

Antioxidants may preserve the brain from aging by preventing oxidative stress (cellular aging) and combating inflammation in the brain. We recommend eating a diet rich in vegetables and plant-based foods to consume the most antioxidants.

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