またお茶効果の話が出てきてます。だったら今頃中国人にも日本人にもガンはないのでは、と思ってしまいますが、本当かなぁもう。それにしても、私はもう一度免疫系を勉強しないとだめです。一応引用しておきます。
NY Timesから。
Study Concludes Tea Helps Fight Infection
By THE ASSOCIATED PRESS
WASHINGTON, April 21 (AP) Tea increases the body’s defenses against infection and contains a substance that may be turned into a drug to protect against disease, a study has found. Coffee does not have the same effect, the researchers say in an article today in Proceedings of the National Academy of Sciences.
A component in tea primes the immune system to attack invading bacteria, viruses and fungi, the study concluded.
An experiment showed that immune system blood cells of tea drinkers responded five times faster to germs than did the blood cells of coffee drinkers.
The results gave clear proof that five cups of tea a day sharpened the body’s disease defenses, said Dr. Jack F. Bukowski, a researcher at Brigham and Women’s Hospital in Boston and Harvard Medical School.
Penny Kris-Etherton, a nutrition specialist at Pennsylvania State University, said the study added to a growing body of evidence that tea is effective at fighting disease.
But she said that the work needed to be confirmed in a much larger study, involving more people.
Dr. Bukowski and his co-authors isolated a substance called L-theanine from ordinary black tea. He said L-theanine was broken down in the liver to ethylamine, a molecule that primes the response of an immune system element called the gamma-delta T cell.
The T cells prompt the secretion of interferon, an important part of the body’s chemical defense against infection, Dr. Bukowski said.
By THE ASSOCIATED PRESS
WASHINGTON, April 21 (AP) Tea increases the body’s defenses against infection and contains a substance that may be turned into a drug to protect against disease, a study has found. Coffee does not have the same effect, the researchers say in an article today in Proceedings of the National Academy of Sciences.
A component in tea primes the immune system to attack invading bacteria, viruses and fungi, the study concluded.
An experiment showed that immune system blood cells of tea drinkers responded five times faster to germs than did the blood cells of coffee drinkers.
The results gave clear proof that five cups of tea a day sharpened the body’s disease defenses, said Dr. Jack F. Bukowski, a researcher at Brigham and Women’s Hospital in Boston and Harvard Medical School.
Penny Kris-Etherton, a nutrition specialist at Pennsylvania State University, said the study added to a growing body of evidence that tea is effective at fighting disease.
But she said that the work needed to be confirmed in a much larger study, involving more people.
Dr. Bukowski and his co-authors isolated a substance called L-theanine from ordinary black tea. He said L-theanine was broken down in the liver to ethylamine, a molecule that primes the response of an immune system element called the gamma-delta T cell.
The T cells prompt the secretion of interferon, an important part of the body’s chemical defense against infection, Dr. Bukowski said.