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多倫多大學卡斯柏教授最近發表將刊登於下個月<分子藥理學>期刊中的一篇研究報告顯示, 吸煙者如果飲適量紅酒, 可以中和香煙中所含毒質, 還可以排除充斥於環境中的多種污染有毒物質. 卡斯柏教授說, 紅酒中所含一種稱為RESVERATROL化合物, 有助於減少煙害. 他尚表示, 這化合物的好處還不止僅限於對吸煙者, 它同時亦是[芳基鹵化煙]之類廢氣的剋星. 人類居住的環境到處充斥排放廢氣物, 燒烤食物濃煙等.....
Friday, December 8, 2006
Sunday, December 3, 2006
Study finds more reasons to drink red wine
Monday August 3 4:58 PM EDT
WASHINGTON (Reuters) - British researchers said Monday they had found more evidence that red wine, as opposed to other forms of alcohol, can protect against heart disease.
They said they had detailed information on how substances in red wine can act as antioxidants, which can help stop fat from sticking to artery walls and clogging them up.
Writing in the American Journal of Clinical Nutrition, they said red wine in its natural form worked best, but capsules containing these substances, known as polyphenols, also worked to a degree.
"Red wine but not white wine has antioxidant activity when given to volunteers and this difference is most likely due to the content of wine polyphenols which are abundant in red wine but not in white wine," Shailja Nigdikar, Alan Howard and colleagues at Papworth Hospital in Cambridge, England, wrote.
They said theirs was one of the first studies to break down how this happens in living human volunteers, as opposed to in a test tube or laboratory animals.
In their study, 30 healthy, nonsmoking men aged 35 to 65 were given either a half-bottle of Cabernet sauvignon red wine, a glass of white French table wine with polyphenols dissolved in it, or polyphenol capsules every day for two weeks.
A "control" group got a drink made with 10 percent vodka and lemon soft drink.
Polyphenols include catechin, quercetin, resveratrol and other substances. They are found in grape skins, and thus in purple grape juice. Grape skins are used in making red wine but are removed early on in the process of making white wine.
"In our study red wine consumption in volunteers increased plasma and LDL polyphenols and enhanced antioxidant activity," Howard and Nigdikar's team wrote.
"Red wine but not white wine contains abundant polyphenols, which inhibit the oxidation of human LDL (low density lipoprotein -- the so-called "bad cholesterol" that can block arteries)," they wrote.
Levels of the polyphenols were elevated by 38 percent with red wine, 28 percent with capsules and 27 percent when the red wine polyphenols were dissolved in white wine.
They measured antioxidant activity by looking at plasma lipid peroxides -- byproducts in the blood of the oxidation of fat. Peroxides were lowered 32.7 percent with red wine, 29 percent by the capsules and 28 percent by the polyphenol-white wine mixture. They were not reduced at all by the vodka drink.
The researchers urged that more trials be held.
Several studies have shown that a moderate intake of any alcohol, not just red wine, can help protect against heart disease and perhaps cancer. Moderate means one or two drinks a day and no more.
But heavy drinkers have above-average mortality rates.
A Harvard School of Public Health report said women who consume two to five alcoholic drinks a day have a 41 percent higher risk of developing breast cancer than do nondrinkers.
Green tea is also known to contain polyphenols, as does black tea.
WASHINGTON (Reuters) - British researchers said Monday they had found more evidence that red wine, as opposed to other forms of alcohol, can protect against heart disease.
They said they had detailed information on how substances in red wine can act as antioxidants, which can help stop fat from sticking to artery walls and clogging them up.
Writing in the American Journal of Clinical Nutrition, they said red wine in its natural form worked best, but capsules containing these substances, known as polyphenols, also worked to a degree.
"Red wine but not white wine has antioxidant activity when given to volunteers and this difference is most likely due to the content of wine polyphenols which are abundant in red wine but not in white wine," Shailja Nigdikar, Alan Howard and colleagues at Papworth Hospital in Cambridge, England, wrote.
They said theirs was one of the first studies to break down how this happens in living human volunteers, as opposed to in a test tube or laboratory animals.
In their study, 30 healthy, nonsmoking men aged 35 to 65 were given either a half-bottle of Cabernet sauvignon red wine, a glass of white French table wine with polyphenols dissolved in it, or polyphenol capsules every day for two weeks.
A "control" group got a drink made with 10 percent vodka and lemon soft drink.
Polyphenols include catechin, quercetin, resveratrol and other substances. They are found in grape skins, and thus in purple grape juice. Grape skins are used in making red wine but are removed early on in the process of making white wine.
"In our study red wine consumption in volunteers increased plasma and LDL polyphenols and enhanced antioxidant activity," Howard and Nigdikar's team wrote.
"Red wine but not white wine contains abundant polyphenols, which inhibit the oxidation of human LDL (low density lipoprotein -- the so-called "bad cholesterol" that can block arteries)," they wrote.
Levels of the polyphenols were elevated by 38 percent with red wine, 28 percent with capsules and 27 percent when the red wine polyphenols were dissolved in white wine.
They measured antioxidant activity by looking at plasma lipid peroxides -- byproducts in the blood of the oxidation of fat. Peroxides were lowered 32.7 percent with red wine, 29 percent by the capsules and 28 percent by the polyphenol-white wine mixture. They were not reduced at all by the vodka drink.
The researchers urged that more trials be held.
Several studies have shown that a moderate intake of any alcohol, not just red wine, can help protect against heart disease and perhaps cancer. Moderate means one or two drinks a day and no more.
But heavy drinkers have above-average mortality rates.
A Harvard School of Public Health report said women who consume two to five alcoholic drinks a day have a 41 percent higher risk of developing breast cancer than do nondrinkers.
Green tea is also known to contain polyphenols, as does black tea.
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