Memory magic: How strawberries could be your brain’s best friend

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NEW YORK, Nov 14, (Agencies): A recent study conducted by researchers in Cincinnati, published in the journal Nutrients, reveals that strawberries might be more than just a delightful summer snack—they could be crucial for maintaining cognitive health.

The research focused on 37 overweight participants, aged 50 to 70, all diagnosed with insulin resistance and subjective cognitive decline, common precursors to dementia. The participants were divided into two groups, with one group receiving a daily dose of 24 grams of freeze-dried strawberry powder, equivalent to two cups of fresh strawberries, while the other group consumed a daily placebo with a similar calorie count. Throughout the 12-week trial, all participants refrained from consuming real berries.

Results showed that the strawberry group exhibited significant memory improvement, particularly in-memory processing. They experienced a noteworthy decrease in memory interference, a vital factor for memory retention and retrieval, and demonstrated enhanced word recall without confusion.

Moreover, participants consuming strawberry equivalents reported a substantial reduction in depression. Their scores on depression inventory tools indicated a decrease in the severity of depressive symptoms, a significant finding given the link between depression and cognitive decline.

Although not statistically significant, there was a trend suggesting improvement in executive functions, such as problem-solving and planning, in the strawberry group. Surprisingly, the study found no metabolic benefits, like changes in blood glucose and insulin levels, despite the established connection between insulin resistance and cognitive decline.

Professor Robert Krikorian, from the UC College of Medicine’s Department of Psychiatry and Behavioral Neuroscience, emphasized the presence of anthocyanins, antioxidants found in strawberries and blueberries, as potential contributors to the cognitive benefits observed. Anthocyanins, naturally occurring pigments in various fruits, are known for their antioxidant and anti-inflammatory properties, protecting cells from oxidative stress.

Beyond cognitive benefits, anthocyanins are associated with positive effects on cholesterol levels, blood pressure, and cardiovascular health. Some studies even suggest their potential role in inhibiting cancer cell growth.

Krikorian expressed optimism about the findings, adding to the increasing evidence supporting the impact of diet on brain health during aging. Strawberries, in particular, may offer a simple, affordable, and tasty way to maintain cognition, especially in individuals at risk of dementia due to insulin resistance.

He highlighted the role of inflammation in cognitive decline and suggested that the observed benefits in the strawberry group might be related to the moderation of inflammation, offering a promising avenue for future research.

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