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| In Vino Veritas: Its A Drink to Your Health |
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| 作者：Gina Ste… 文章来源：不详 更新时间：2008-2-12 20:36:49 | 【字体：小 大】 |
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f wine. There are thousands of flavonoids, plant pigments that act as antioxidants in the human body, and red wine is rich in many of them. Dry reds contain the highest concentrations, since flavonoids, like resveratrol, are contained in the seeds and skins of grapes. But whereas resveratrol exhibits preventive properties against cancer, flavonoids may actually have curative ones. Researchers at the University of Guelph in Ontario studied the effects of flavonoids on breast cancer and found that three different flavonoids in wine attack and kill cancer cells while leaving healthy cells intact. The flavonoids seemed to help regulate cell division, and calm down the uncontrolled growth of cancer cells, bringing the overactive systems down to normal levels.
All this good news begs another question. Since so many of the benefits of wine can be traced to grape skins and seeds, can鈥檛 you get the same effects from grape juice, or whole grapes?
Common sense and countless studies do say that grapes and grape juice can confer many of the same benefits as wine. But there are some caveats.
An important one is that the alcohol in wine enhances the beneficial effects of grape polyphenols. In return for this favor, the polyphenols seem to provide protection from harmful 鈥渞ebound鈥?effects related to sudden death and stroke that can occur after the withdrawal of other forms of alcohol. This synergy created by the relationship between alcohol and polyphenols gives wine a significant boost over grape juice, as demonstrated in a study published in January 1995 by the American Heart Association. In this study, scientists examined the effects of red wine, white wine, and ethanol on 鈥減latelet aggregation鈥?(sticky platelets) in rats. Why are sticky platelets a problem? In the case of wounds, they aren鈥檛. Platelet aggregation is what causes blood to clot and injuries to heal. But sticky platelets in arterial walls can cause the上一页 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] 下一页
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