05/30/2025
BERRY BENEFITS
Berries are packed with polyphenols, which have powerful anti-inflammatory and antioxidant properties. Anthocyanidins, the natural blue-purple pigments in plants, are a type of polyphenol that can cross the blood-brain barrier and may provide neuroprotective effects.
The Harvard Nurses’ Health Study followed 16,000 women for years and found that those eating more berries over the long term had significantly slower cognitive decline. In the study, higher consumption of blueberries and strawberries was associated with "delayed cognitive aging by as much as 2.5 years"—thought due to the anthocyanins in the fruits.
When older adults added the equivalent of one cup of blueberries to their daily diet, researchers found improvements in their long-term memory and other aspects of cognition. In terms of the number of errors on the test, the placebo group did worse, while the blueberry group did better.
Eating just a handful of berries every day, an easy and delicious dietary tweak, may slow your brain’s aging by years.
GREENS BENEFITS:
Dark green leafy vegetables, including kale, collards, and arugula, are packed with the antioxidant lutein.
Levels of lutein in the retina of our eyes correspond to levels in the rest of our brain, so our eyes can be a window into our mind. Significant correlations exist between cognitive test scores and the amount of macular pigment in our eyes—plant pigments like lutein.
Increasing our intake of greens like kale can be a beneficial way to improve and maintain the health of our brain and our eyes.
More than 100,000 people were followed for decades in the Harvard Nurses’ Health Study and the Health Professionals Follow-Up Study. Greater intake of lutein and zeaxanthin, macular pigments and antioxidants found in greens, was associated with about a 40 percent lower chance of developing late-stage macular degeneration. To prevent macular degeneration, a diet high in green leafy vegetables is recommended.
To learn more, see the videos “Brain-Healthy Foods to Fight Aging” at https://see.nf/brainlutein and “How to Slow Brain Aging by Two Years” at https://see.nf/3StIvt5
PMID: 22658645, 22535616, 2535616, 28283823, 25109868, 25752849, 26566524, 26447482, 26081455