Evidence supporting the use of: Berry flavor
For the health condition: Eye Problems

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Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Berry flavors, particularly those derived from blueberries and bilberries, are used in supplements and traditional remedies for eye health. The scientific basis for this use primarily stems from the presence of anthocyanins—potent antioxidants found in these berries. Historically, bilberry gained popularity during World War II when British pilots reportedly consumed bilberry jam to improve night vision. Since then, several laboratory and small human studies have investigated the potential eye benefits of berry extracts. Some research suggests anthocyanins may improve microcirculation in the retina and reduce oxidative stress, which is implicated in conditions such as age-related macular degeneration and diabetic retinopathy. However, the quality and size of these clinical studies are often limited, and results have been mixed. Most authoritative reviews, including those from the Cochrane Library, conclude that there is insufficient high-quality evidence to definitively support the efficacy of berry extracts in preventing or treating specific eye diseases. Berry flavor itself is not responsible for any therapeutic effect; rather, it is the bioactive compounds in the berries. In summary, while laboratory and early clinical research suggest a plausible benefit, robust, large-scale clinical evidence is currently lacking, and the use of berry extracts for eye problems is only modestly supported by science at this time.

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