The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
The blueberry eaters out there like me, who prefer to get their anthocyanins from the actual berries, it appears that somewhere between 60 to 120 grams of fresh blueberries each day is the way that you can get sufficient anthocyanins to at least shift your system, or bias your brain towards these enhanced cognitive effects.
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So that range of about 400 to about 600 milligrams per day seems to be the minimum threshold for getting a cognitive effect in these elderly patients. In that case, they were patients. A good review about the anthocyanins potentially contributing to offsetting cognitive decline in things like Alzheimer's, and also enhancing brain function in people that don't have Alzheimer's, is a review by Afzal, A-F-Z-A-L, that was published in 2019. We will also provide a link to that study in the caption. When one looks across the total batch of studies that are out there on this, it appears, that if one is going to supplement with blueberry extract to get the anthocyanin effect on cognition, dosages of somewhere between 5 1/2 or about 11 grams seem optimal with the higher end, closer to 10 or 11 grams being more beneficial.
1 cup daily is all it takes Also powerful for boosting mood