Can a cup of blueberries keep the doctor away? Maybe.
一杯蓝莓能保持身体健康?也许能。
Researchers conducted a randomized, double-blind, placebo-controlled study of 40 postmenopausal women ages 45 to 65 with high blood pressure. Half ate 22 grams of freeze-dried blueberry powder (equivalent to a cup of blueberries) daily for eight weeks. The others consumed an identical-looking and tasting placebo.
研究者对40位45岁至65岁的绝经后高血压妇女进行了一项随机、双盲、安慰剂对照的研究。其中一半每天吃22克冷冻干燥的蓝莓粉(相当于一杯蓝莓),共吃八周。另一半服用一种外观和味道与蓝莓粉完全相同的安慰剂。
The study, in The Journal of the Academy of Nutrition and Dietetics, found that those who ate the blueberry preparation saw an average 5.1 percent decrease in systolic blood pressure (the top number) and a 6.3 percent decrease in diastolic pressure. Levels of nitric oxide, known to be involved in relaxing and widening blood vessels, increased significantly in the blueberry eaters. There were no significant changes in the placebo group.
这项发表在《美国营养与饮食学会会刊》上的研究发现,蓝莓粉服用者的收缩压(高压)平均降低了5.1%,舒张压平均降低了6.3%,一氧化氮水平提高了很多——一氧化氮有助于放松和扩张血管。安慰组的相关指数没有显著变化。
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