A cup of coffee a day in scientific research can save your eyesight

The study was accidentally discovered by researchers at Cornell University in New York while studying the antioxidant effects of coffee. Coffee contains 1% caffeine, but has 7% to 9% of the strong antioxidant chlorogenic acid. The study, published in the Journal of Agricultural and Food Chemistry, found that chlorogenic acid in mice can prevent retinal degeneration.

Li Chang, a professor of food science and one of the authors of the study, said: "the retina is a thin layer of membranous tissue in the eye, the back wall of tens of thousands of photoreceptors and other nerve cells in the eye that receive and organize visual information. It is also one of the most metabolically active tissues, so it requires a high level of oxygen to cope with oxidative stress. Lack of oxygen and free radicals can lead to retinal tissue damage and blindness. "

"this study is very important for understanding the function of food," he said. In other words, natural food is good for our health. "

Coffee is the most popular drink in the world. We now know what benefits we can get out of it. "

Previous studies have shown that coffee can also reduce the risk of chronic diseases such as Parkinson's disease, prostate cancer, diabetes, Alzheimer's and other cognitive decline caused by old age.