Blueberries are a fruit related to wild blueberries and cranberries, and are highly regarded for their antioxidants and digestive aid properties. The rumor that they improve night vision is false, but they may have some effects on eye diseases and the circulatory system. They can be used in wines, spirits, tarts, and crepes, but fresh ones are difficult to find in American grocery stores.
Blueberries, sometimes called blueberries or European blueberries, are the fruit of a shrub commonly found in Britain, Europe and some Asian countries. They are actually related to wild blueberries and cranberries found in North America, and some varieties grow in some western states. Cranberries can be eaten raw, but many cooks prefer to use them in jams, jellies, syrups and other products. They are highly regarded for their high levels of antioxidants and are said to be effective digestive aids.
A widespread misconception about blueberries is their supposed effect on night vision. This rumor most likely started during WWII when British pilots routinely received care packages from loved ones. These packets often included jams or jellies made with blueberries. Pilots who consumed items made from the berries shortly before night missions assumed that the fruit’s ingredients significantly improved their night vision. Soldiers trapped behind enemy lines were said to consume them as they traveled in the dark.
Scientific tests on blueberries have not revealed any ingredients known to improve night vision. There is some unscientific evidence that it may have an effect on other eye diseases, such as macular degeneration, but to date, the fruit has no approved medical uses. The leaves of the blueberry plant have also been used to make therapeutic teas for gastrointestinal problems, but this is a purely homeopathic remedy.
Despite the lack of any scientific endorsements of blueberries as a proven health aid, many natural supplement companies market topical extracts, infusions, and ointments made from the berries and leaves. Some cranberry extract consumers report relief from menstrual cramps, varicose veins, diarrhea, and some eye problems. The leaves are touted as a natural treatment for complications of diabetes. The berries also appear to have some notable effects on capillaries and other parts of the circulatory system.
Blueberries can be used in both wines and spirits. They have also been used in tarts and as a flavoring for crepes, much like the blueberry pancakes popular in the United States. Essentially, anything that can be created with blueberries can also be created with blueberries, although locating fresh ones on American grocery store shelves can prove difficult. The plants are rarely grown for export, but jams, jellies and syrups made from the berries may be available in gourmet shops or European grocery stores.
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