摘自 http://www.shape.com/weight-loss/food-weight-loss/ask-diet-doctor-red-wine-worth-calories

没有时间详细翻译。大意是：红酒中的抗氧化物有一半没有被消化系统吸收。而没有被吸收的抗氧化物则被大肠的有益细菌所吸收，从而帮助了这些细菌的发展。

Your digestive tract houses a wide variety of bacteria, some good, some bad. Decreases in good bacteria and/or increases in bad bacteria have been linked to a growing list of health issues, including weight gain, type 2 diabetes, and inflammatory bowel disease. Red wine can help shift the types of bacteria in your digestive track so there's more of the good kind, making you healthier and potentially leaner.

Here's how it works: Red wine's red color comes from antioxidants called polyphenols. Polyphenols can help improve your health in a variety of ways, but one problem with certain polyphenols, especially the ones in red wine, is that your body doesn't absorb them very well. It has been estimated that almost half of the polyphenols consumed are not absorbed during the normal initial phases of digestion. While this sounds like a bad thing, the unabsorbed polyphenols become food for the good bacteria in your digestive track. This is exactly what Spanish researchers found when they examined the digestive tracks of people who drank red wine every day for 20 days.

In addition to improving the quality of the bacteria in digestive tracts, study participants also saw improvement in several major risk factors for cardiovascular disease, like triglyceride levels. This is likely due to the fact that the good bacteria in your digestive tract can help improve metabolism for a faster rate of burning that fat.

The bottom line: Enjoy your nightly glass of red wine (4-6oz) to reap the benefits of a longer life, higher good cholesterol levels, and improved digestion and metabolism.