但海马区内嗅皮质的活跃度并未增强——该部位会在阿尔茨海默氏病早期受损。由此强化了这样一种观念:与年龄有关的记忆力下降是另外一码事;同时表明,尽管黄烷醇或许可以延缓正常的记忆力衰退,但对阿尔茨海默氏病患者而言可能并不管用。
But unless you are stocking up for Halloween, do not rush to buy Milky Way or Snickers bars. To consume the high-flavanol group's daily dose of epicatechin, 138 milligrams, would take eating at least 300 grams of dark chocolate a day — about seven average-sized bars. Or possibly about 100 grams of baking chocolate or unsweetened cocoa powder, but concentrations vary widely depending on the processing. Milk chocolate has most epicatechin processed out of it.
不过,除非你在为万圣节囤货,否则可别急于购买银河系牛奶巧克力(Milky Way)或士力架(Snickers)巧克力棒。要达到高剂量黄烷醇那组的人每天138毫克的儿茶素摄入量,一天至少得吃300克黑巧克力——约合7根中等大小的巧克力棒。或者去吃掉100克烘培巧克力或不加糖的恒星粉,但儿茶素的含量因加工流程的不同而存在极大的差异。牛奶巧克力里的大部分儿茶素都会在加工过程中流失。
"You would have to eat a large amount of chocolate," along with its fat and calories, said Hagen Schroeter, director of fundamental health and nutrition research for Mars, which funds many flavanol studies and approached Dr. Small for this one. ("I nearly threw them out," said Dr. Small, who added that he later concluded that the company employed serious scientists who would not bias the research.) Mars financed about half the study; other funders were the National Institutes of Health and two research foundations.
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