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February 15, 2016
Blueberries Help Night Vision?
Everyone has heard that carrots are good for your eyes. Many folks are probably even aware that eating green leafy vegetables is helpful for those at risk for age related macular degeneration (AMD). But, have you ever heard that blueberries are good for your night vision? Blueberries are considered “super stars” among health food advocates, who tout the fruit for not only promoting heart health, better memory and digestion, but also for improving night vision. Now, scientists have taken a closer look at this and have found reason to doubt that the popular berry helps most healthy people see better in the dark. Their report appears in ACS’ Journal of Agricultural & Food Chemistry. Blueberries were thought to be possibly be helpful for your night vision because they contain anthocyanins, which are pigment molecules in blueberries and other plants, that promote the regeneration of key molecules in the eye involved in perceiving light. But reviews of the earlier clinical research that tested the effect of blueberries on night vision in human subjects revealed that the studies were poorly controlled. The researchers found that a blueberry-supplemented diet did not improve sight in the dark, but they did help subjects recover normal vision after exposure to a bright light. The enhancement, however, was small and not likely noticeable to most healthy people, the researchers concluded. So, if you like blueberries feel free to eat and enjoy them, but don’t wait for your night vision to improve.
