In a recent study, people were given dark and milk chocolate. After that, they were given vision tests. Those who ate dark chocolate experienced short-term improvements in vision and contrast sensitivity. This chocolate also prevents the protein buildup that causes cataracts.
The cocoa in chocolate contains powerful antioxidants. These are flavonoids. They prevent cell damage by reducing oxidative stress caused by free radicals in the body. These antioxidants also have positive effects on the heart, blood vessels and eye health.
People who consumed dark chocolate experienced short-term improvements in visual acuity and contrast sensitivity, due to the effect of flavonoids that activate blood flow.
Additionally, flavonoids slow down or prevent the development of cataracts and age-related macular degeneration.
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Source: Ferra

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